Ahmed Mohamed Ali, Siza Yacoub Zakhary And Suzan Abdul Wanis Amin,

ABSTRACT

Objectives: To Systematically Review And Provide A Pooled Effect Estimate For The Clinical Effects Of Calcium Hydroxide Intracanal Medication In Non-vital Mature Teeth. Data Sources: Electronic-databases Searching, For Published And Grey Literature, And Manual Searching Were Conducted. Study Eligibility Criteria: Only Randomized Clinical Trials Were Included That Compared Calcium Hydroxide To Other Intracanal Medications In Non-vital Immature Teeth. Study Appraisal & Synthesis Methods: The Risk Of Bias Was Assessed Using The RoB 2.0 Cochrane Tool. The Main Outcomes Were Clinical Healing And Analgesic Intake. Risk Ratio Was Calculated For Dichotomous Data With Their 95% Confidence Intervals.

Results: Five Articles Reported In 4 Studies (N=285) Were Included In This Systematic Review. Calcium Hydroxide Was Compared To 6 Other Intracanal Medications. Calcium Hydroxide Had Similar Clinical Healing Effectiveness As Calcium Hydroxide Mixed With Iodoform And Povidine Iodine Paper Points (P-value >0.05) And Similar Effects On Analgesic Intake As Calcium Hydroxide Mixed With Chlorhexidine (P-value >0.05). Conclusion: Calcium Hydroxide Intracanal Medication Alone May Have Similar Clinical Effectiveness Compared To Calcium Hydroxide Mixed With Iodoform And Similar Effects On Analgesic Intake As Calcium Hydroxide Mixed With Chlorhexidine.

Neven Ahmed, Amira Farid Elzoghbi And Rasha Raafat Hassan,

ABSTRACT


Aim: This Study Was Conducted To Evaluate The Role Of Aloe Vera Toothpaste Compared To Fluoride Toothpaste In Changing High To Low Salivary Bacterial Count.

Materials and Methods: Participants Were Divided Into Two Main Groups, ,Group A1: With Fluoride Toothpaste (Signal Cavity Fighter) And Group A2: With Aloe Vera Herbal Toothpaste (AloeDent Triple Action). The Study Took Place Over A Period Of 30 Days .Saliva Collection (to Assess The Bacterial Count) Was Performed At Baseline, After15 Days, And After 30 Days. The Saliva Samples Were Cultured In Plates Contained Mitis Salivarius Bacitracin Agar Selective For�streptococcus Mutans For Determining Streptococcus Mutans�count And Kept At 37�C For 48 Hours In An Incubator. The Bacterial Colonies On The Plates Were Expressed As Number Of Colony Forming Units Per Milliliter (CFU/ml) Of Saliva.

Results: The Results Revealed That, In Aloe Vera Group, The Mean Bacterial Count Was The Highest At Baseline, Significantly Decreased After15 Days, Then Becomes Nearly Constant, With No Significant Difference Between The Mean Values After 15 Days And After 30 Days. In Fluoride Group, The Mean Bacterial Count Was Highest At Baseline, And Then Significantly Decreased Gradually After15 Days And After 30 Days. Conclusion: Both Fluoride And Aloe Vera Are Efficient In Decreasing The Streptococcus Mutans Count In Saliva. Aloe Vera Can Be Used As An Alternative For Fluoride Toothpaste

Samar Seif El Nasr Mohamed, Enas Anter Abd El Ghafar And Nashwa Salah Mohamed,

ABSTRACT
Background: This Study Aimed To Evaluate The Frequency Of Root Fenestration And Dehiscence In A Sample Of Adult Egyptian Population Using CBCT.

Materials and Methods: 100 CBCT Scans Showing Both Maxillary And Mandibular Dentation �with Total Number Of 2576 Teeth� Were Selected From The Database Of OMFR Department, Faculty Of Dentistry, Cairo University, Based On Certain Eligibility Criteria. Identification Of Fenestration And Dehiscence On CBCT Scans Was Done Using The Identification Criteria First Mentioned By Davies Et Al 1974.

Results: Fenestration Was Found In 17 % Of The Population With A Total Of 26 Affected Teeth (representing 1% Of The Involved Teeth) While Dehiscence Was Found In 50% Of The Population With A Total Of 194 Affected Teeth (representing 7.5% Of The Involved Teeth). Upper 2nd Molars Showed The Highest Prevalence Of Fenestration While Lower Central Incisors Showed The Highest Prevalence Of Dehiscence. Gender Was Found Not Significantly Affecting The Incidence Of Both Defects, While Age Was Significantly Affecting The Incidence Of Dehiscence, Where Older Subjects Were Found To Be 11.5 Times More Prone To Develop Dehiscence Than Younger Subjects.

Conclusions: The Relative Common Finding (50%) Of Dehiscence And To Lesser Extent (17%) Fenestrations Supports The Need For CBCT Examination Before Any Surgical &/or Implant Treatment Procedures Even In Areas Believed Previously To Be Safe Zones �lower Anterior Region� To Avoid Complications Related To The Initial Presence Of Fenestrations And Dehiscence.

Nada Ashraf Kamal , Farid Medhat Farid And Yara Rabia Helaly,

ABSTRACT

Objectives: The Study Aimed To Assess The Prevalence Of C-shaped Root Morphology In The Mandibular First And Second Molars Of Egyptian Sub Population Using CBCT.

Materials and Methods: 169 CBCT Scans Including 384 Mandibular First And Second Molars Were Examined Using Planmeca Romexis��Viewer Software. Scans Were Analyzed In The Three Planes Axial, Coronal And Sagittal By Two Oral Radiologists Detecting The Presence Of C-shaped Root Morphology. Qualitative Data Were Presented As Frequencies And Percentages. Inter- And Intra-observer Agreement Was Assessed Using Kappa Statistic For Qualitative Data.

Results: C-shaped Root Was Found In 36 Second Molars Comprising 17.1% Of Second Molars, And No C-root Was Found In First Molars. Conclusion: C-shaped Root Is Not Rare In The Mandibular Second Molars Of The Egyptians Needing The Clinicians To Learn How To Manage Such Cases.

Amani Ahmad Al Tuwirqi,

ABSTRACT
Background/Purpose : Prevention And Management Of Proximal Caries In Primary Teeth Remains A Challenge. This In Vitro Study Aimed To Evaluate The Enamel-protective Potential Of A New Adhesive Agent (G-Coat Plus�) When Used As A Smooth Surface Sealant. Materials And Methods : Twenty Extracted Bovine Permanent Incisors Were Chosen, Then Randomly Distributed Into Two Equal Groups According To The Sealant Material Used: Group I, G-Coat Plus�; And Group II, Clinpro�. The Baseline Surface Microhardness (B-SMH) Of Each Tooth Was Measured In The Area Of The Centralized Working Window With A Vickers Microhardness Testing Machine. The Mean Microhardness Values Were Calculated From The Measurements Taken From Three Indentations Created On Each Tooth. The Teeth Were Then Immersed In Demineralizing Solution For 96 H And Incubated At 37�C To Produce Artificial Carious Lesions. The Calcium (Ca) And Phosphorus (P) Concentrations Of The Demineralizing Solutions Were Analyzed Before And After Tooth Immersion.

Results: The Mean Microhardness Values For Groups I And II Were Statistically Significant At Baseline And After Demineralization (p = 0.007 And P < 0.001, Respectively). No Significant Difference In Mean Microhardness Was Observed Between The Groups At Baseline (p = 0.055) Indicating That Both Materials Had Comparable Results. However, The Difference In Mean Microhardness Between The Groups Was Statistically Significant After Demineralization (p = 0.001), Indicating Changes In The Mineralization Of The Tooth Samples. Statistical Analyses Demonstrated Significant Differences Among The Two Groups Regarding The Mean Ca And P Concentration Values (Ca:, P = 0.028; P, P < 0.001). Conclusion: G-Coat Plus Exhibited Higher Surface Microhardness Than Clinpro. Both Sealant Materials Released Ca And P Ions, Suggesting That Additional Preventive Measures Are Necessary When Using These Materials As Proximal Sealants.

Rasha Saad Zaghlool, Mona Ismail Riadand Mohamed Mostafa,

ABSTRACT


Purpose: The Aim Of This Study Was To Evaluate The Fluoride Release Of New Bioactive Composite Restorative Material (Activa) In Comparison To Two Fluoride Releasing Materials In Vitro At Different Time Intervals.

Materials and Methods: Thirty Specimens Were Prepared 10 Of Each Tested Material (n = 10/group), Activa Bioactive Composite (A1), FUJI II LC Capsules (A2) And Fuji IX Extra Capsules (A3). Specimens Were Prepared According To Manufacturers� Specifications For Each Group Using A Teflon Mold (10mm Diameter By 2mm Depth). Specimens Of Each Material Were Immersed Separately In Deionized Water. Fluoride Release Measurements (?g/cm /day) Were Made1 Day, 1 Week, 1 Month, 2 Months And3 Months. One-way And Repeated Measures Analysis Of Variance Tests Were Used.

Results: The Results Of The Tested Materials Were Collected, Statistically Analyzed Using The ANOVA Test To Determine The Amount Of Fluoride Release Between Different Tested Materials (p<0.001).The Results Indicate That Fuji IX Had The Highest Fluoride Release In Comparison To The Other Activa Bioactive Materials And Fuji II LC Conclusion: All Three Different Restorative Materials Released Fluoride In Deionized Water But Fuji IX Glass-ionomer Showed The Highest Fluoride Release Followed By Fuji II LC And Activa Bioactive Restorative Materials.

Abdelrahman G. Ahmed , Cherif A. Mohsen And Shams W. Amgad,

ABSTRACT
Objective The Purpose Of This Study Was To Evaluate The Effect Of Ceramic Type And Thickness On The Microhardness And Degree Of Polymerization Of Dual Cure Resin Cement.

Materials and Methods: - Ninety Resin Cement Disc Shaped Samples (5 Mm In Diameter And 0.5 Mm In Thickness) Were Fabricated, Samples Were Divided According To Type Of Ceramic Plate That Was Used Into Three Groups (each Group N = 30), Group I : Resin Cement Discs Cured Through Lithium Disilicate Plate. �IPS E.max Cad�, Group II : Resin Cement Discs Cured Through Hybrid Ceramic Plate �Vita Enamic� And Group III : Resin Cement Discs Cured Through Zirconia Reinforced Lithium Silicate Plate �Celtra Duo� . Each Group Was Subdivided Into 3 Sub Groups According To Ceramic Plate Thickness (each Subgroup N = 10), Sub Group I (0.5 Mm Thickness), Sub Group II (1 Mm Thickness) And Sub Group III (2 Mm Thickness) . Then Each Subgroup Was Divided Into Two Other Classes (5 Samples Each) According To Type Of Test (Microhardness, Degree Of Conversion (DC)) Test.samples Which Will Have Being Tested For Microhardness ,mounted In Wilson Micro-Hardness Tester Machine And Will Be Subjected To Static Load Of 50 G For 10 S By Means Of Indenter , A Calibrated Microscope (�50 Magnification) Will Be Used To Measure The Square Indentation. While For Degree Of Conversion Test, The Samples Were Examined By VERTEX 70v FTIR Spectrometer Equipment Operating At 16 Scans At 4cm-1 Resolution . By Using The Change In The Ratio Of The Aliphatic C=C To The Aromatic C=C Before And After Curing, DC Of Resin Was Calculated. The Data Was Collected, Tabulated And Statistically Analyzed. Result: It Was Found That The The Highest Microhardness Mean Value Was Recorded For Emax Groups (22.15�5.04) While The Lowest Microhardness Mean Value Was Recorded For Celtra Duo Groups Which Recorded (16.79�3.62). Besides, It Was Found That The Highest Microhardness Mean Value Was Recorded For Thickness 0.5 Mm Groups (23.62�2.94) While The Lowest Microhardness Mean Value Was Recorded For 2 Mm Groups Which Recorded (13.87�1.56). The Difference Between Groups Was Statistically Significant As Indicated By One Way ANOVA Test P Value < 0.05. For DC Test It Was Found That The Highest (DC) Mean Values Recorded For E-max (36.30�8.84) And The Lowest For Celtra Duo (21.44�8.61) And The Highest DC Mean Value Was Recorded For Thickness 0.5 Mm Groups (38.33�5.91) While The Lowest DC Mean Value Was Recorded For 2 Mm Groups Which Recorded (19.27�5.90).The Difference Between Groups Was Statistically Significant As Indicated By One Way ANOVA Test (P Value < 0.05) Conclusion: Ceramic Composition Affects Polymerization Of Dual?cured Resin Cement Due To Attenuation Of Light Reaching Cement. In This Study, Microhardness And Degree Of Polymerization Of Resin Cement Discs Cured Through Emax Plate Was Significantly Greater Than Vita Enamic Followed By Celtra Duo Plates. Ceramic Thickness Has A High Significant Effect On The Underlying Dual Cure Resin Cement MicroHardness Of The Dual Cure Resin Cement Are More Affected By The Thickness Of Ceramic Than By The Type Of Ceramic Used.

Mustafa Mahmoud Shalaby Ahmed, Wafaa Ahmed Omar And Marwa Mahmoud Ali Bedier,

ABSTRACT


Aim: This In Vitro Study Was Carried Out To Evaluate The Effect Of Lowering The Temperature Used With Continuous Wave Compaction (CWC) From 200�C To 150�C On The Push-out Bond Strength And Interfacial Adaptation Of TotalFill BC Sealer In Relation To AH Plus Sealer.

Materials and Methods: A Total Of Eighty-eight Extracted Human Single-rooted Teeth With Single Straight Root Canals Were Selected For This Study. The Samples Were Randomly Allocated Into Four Groups (n=22) According To The Type Of Sealer Used And The Temperature Of Warming Gutta-percha; (AH Plus/ 150�C), (AH Plus/200�C), (TotalFill BC/150�C) And (TotalFill BC/200�C) Groups. The Roots Were Sectioned Horizontally Into 2 Mm. Thick Slices, And The Bond Strengths Were Measured Using A Standardized Push-out Test. The Mode Of Failure Was Examined By Visual Inspection Under Stereomicroscope. Before The Push-out Test, Five Representative Samples From Each Group Were Randomly Selected To Qualitatively Assess The Interfacial Adaptation Using Environmental Scanning Electron Microscopy (ESEM).

Results: The Mean Push-out Bond Strength Values Of The Two Sealers Recorded Significant Lower Values At 150�C Than At 200�C. The Predominant Mode Of Failure Among Groups Was Adhesive Failure, Except For TotalFill BC/200�C Group That Showed Mostly Mixed Failure. Regarding The Interfacial Adaptation, The Mean Gap Width Measurement At 150�C Was Wider Than That At 200�C For Both Sealers.

Conclusions: Using 150�C During CWC Technique Compared To 200�C Significantly Decrease The Bond Strength Values And The Interfacial Adaptation Of TotalFill BC Sealer As Well As AH Plus Sealer.

Osama Jaber Sabri Alshanti, Amr Saleh El-Etreby And Gihan El-Naggar,

ABSTRACT
Objective: The Aim Of The Present Study Is To Evaluate The Effect Of Two Surface Treatments (acid Etching And Sandblasting) On The Shear Bond Strength Of Composite Resin Cement To Pressed And Repressed Lithium Di Silicate Ceramics. Patients And Methods: Fifty Two Lithium Disilicate Discs Were Constructed Of 10mm Diameter And 2mm Thickness And Were Divided Into 2 Groups. Group (P) Composed Of 26 Discs Constructed From Newly Introduced Lithium Disilicate Ingots While Group (R) Composed Of 26 Discs Constructed From Left Over Material That Was Shaped To Resemble An Ingot.

Results: The Discs Were Thermo-cycled In An Attempt To Simulate The Intra-oral Conditions And Its Detrimental Effect On Bond Strength For 5,000 Cycles Which Is Equivalent To 6 Months Of Intra-oral Service And Then The Shear Bond Strength Test Was Initiated. Then The Mode Of Failure Was Examined And All Data Were Collected, Tabulated And Statistically Analyzed To Detect Any Significant Values Among The Tested Groups. Conclusion: The Re-use Of E.max Press Left Over Buttons For Construction Of All Ceramic Restoration Could Be Considered For Socio-economic Reasons. The Type Of Surface Treatment Adopted Greatly Affects The Shear Bond Strength Of Pressed And Repressed Ceramics And Hence The Durability Of Resin Cement Bonded To Ceramics. Sandblasting Cannot Be Considered As A Reliable Surface Treatment When Bonding To Pressed And Repressed Glass Ceramic.

Taha Amer Taha, Ahmed Mohamed Fahmy And Doaa Amr Heshmat,

ABSTRACT

Objectives: This Study Was Aiming To Evaluate Primary Stability Of Implant In Closed Sinus Lifting Cases By Densah Bur In Comparison To Osteotome In Partially Edentulous Patients. The Evaluation Was Carried Out Through Ostell Device Day Of The Surgery, 2, 4, 8 Weeks Postoperative.

Materials and Methods: This Study Was Conducted On Ten Patients. The Patients Were Divided Into Two Equal Groups. Each Patient Was Received 1 Implant At The Edentulous Site Of Missing First Or Second Maxillary Molar. One Group Received Dental Implants Using Closed Sinus Lifting By Osteotome While The Other Group Received Dental Implants Using Closed Sinus Lifting By Densah Bur. After Implant Placement, Smart Peg Is Placed On Implant And Ostell Is Used To Record ISQ. Implant Stability Was Measured Intraoperative And At Week 2, 4, 6, And 8 For Both Groups. The Collected Results Were Tabulated And Statistically Analyzed.

Results: The Study Results Showed That There Was No Statistically Significant Difference Between (Osteotome) And (Densah Bur) Groups In ISQ Reading Except At Week 4 Where The Highest Mean Value Was Found In (Densah Bur) Group, While The Least Mean Value Was Found In (Osteotome) Group. Conclusion: Within The Limitation Of This Study, Densah Bur Can Be Applied For Closed Sinus Lifting In A Simple, Safe And Predictable Way With Reduced Morbidity Without Need To Hand Tapping Force.

Mina W. Yassa, Amal Kaddah And Ahmed E. Fayyad,

ABSTRACT
This Study Was Conducted To Evaluate The Effect Of Cast Modifications On The Adaptation Of Maxillary Denture Base In Completely Edentulous Patients. Three Groups Of Maxillary Complete Dentures Were Fabricated. Each Group Contained 15 Dentures. The First Group Was The Control Group And Did Not Contain Any Modifications. The Second Group Was Modified By Scraping A Postdam Posterior To The Fovea Palatini. The Third Group Was Modified By Scraping A Postdam As Well As Creating A Vertical Box-shaped Depression With Pinhole. Sagittal And Coronal Cuts Were Made On All The Casts Using Specific Points. These Images Were Then Captured And Scanned Using Stereomicroscope (50X Magnification) And Then The Images Were Introduced To An Image Analysis Software For Accurate Gap Measurement. There Was A Statistical Significant Difference Between The Three Groups In Both Sagittal And Coronal Cuts In Favor Of The Modified Casts. The Dentures With Postdam Scraping And Vertical Box With Pinhole Showed Better Adaptation And Less Gap Distance When Compared To The Dentures With Postdam Scraping Only.

Safinaz H. Fahmy , Mai M. Akah And Mona Ismail Riad,

ABSTRACT

Objectives: The Study Aim Was To Evaluate The Retention Rate Of Hydroxyapatite Nanofiber Reinforced Flowable Composite Compared To Conventional Resin-based Flowable Composite During Management Of Initial Non Cavitated Pits And Fissures Carious Lesion In Adult Population Over A One-year Period. Methods: A Total Of 19 Volunteer Patients Ranging In Age From 18 To 28 Years, Diagnosed With At Least 2 Non-cavitated Pit-and-fissure Caries In The First And Second Molars Were Selected For This Randomized Split-mouth Design Trial. A Total Of 38 Sealants, Were Placed. The Teeth Were Sealed With NovaPro� Flow Hydroxyapatite Nanofiber Reinforced Flowable Composite In One Side, While Filtek� Z350 XT Flowable Conventional Resin-based Composite On The Contralateral. Each Restoration Was Independently Evaluated In Terms Of Retention Rate At 1, 6, And 12 Months. Data Were Analyzed Using Wilcoxon Signed-rank Test And Friedman�s Test At P < 0.05.

Results: NovaPro� Flow Hydroxyapatite Showed Complete Retention With 100% At 1, 6, Month Evaluation Periods, While Filtek� Z350 XT Retention Rates Were 100%, 78.9%, Respectively, For The Same Evaluation Periods. At The 12-month Recall, 2 (10.5%) Total Losses Were Observed In Subjects Treated With NovaPro� Flow And 2 Total Losses (15.8%) For Filtek� Z350 XT. No Statistical Significant Difference In The Retention Rate In Both Sealants During Different Follow-up Intervals (P>0.05)

Conclusions: The Retention Rate Of Both Hydroxyapatite Nanofibers Reinforced Flowable Resin Composite And The Conventional Nanofilled Flowable Resin Composite After One Year Of Follow Up Was Comparable. Clinical Relevance: The Clinical Survival Rate Of Both Tested Materials May Indicate Them As Effective Approaches For Preventing Carious Lesions In Permanent Teeth.

Aya Gamal Ashour Hassan , Rasha Raafat Hassan And Mohamed Riad Farid,

ABSTRACT


Aim: This Study Was Conducted To Evaluate The Reproducibility Of CAMBRA And Cariogram As Caries Risk Assessment Among Patient With Age Range Of (18-40) Years Old. Method: 47 Patients Where Included In The Study Which Were Evaluated First With The CAMBRA Chart, Then The Same Data Was Used For Cariogram. All Inputs Where Included Except For The Salivary Buffering Capacity. The Results Were Calculated According To Caries Risk Value (low / Moderate / High / Very High). All Assessment Was Conducted In The First Visit With No Follow Up. Reproducibility Between The Results Given By The Two Models Was Evaluated By Using Kappa Statistical Analysis. Results :The Agreement Between The Two Models Was �Fair� Of Value 0.325 (low), With P-value<0.01 Which Makes The Results Statistically Significant But Not Enough To Make The Result Clinically Significant. From This We Can Conclude That Both Caries Risk Assessment Can Give Almost The Same Result Concerning Risk Assessment Except In The Difference Between High And Very High-risk Patient.

Abdel Hameed M. , Metwally A., Dewdar R. And Rekaby A,

ABSTRACT

Objectives: The Present Study Was Conducted To Compare Between The Polyamide Thermoplastic Resin And Polymethyl Methacrylate Resin With Respect To The Patient Satisfaction As A Primary Outcome And Candidal Adherence As A Secondary Outcome. Subjects And Methods: In This Randomized Clinical Trial, Forty-eight Completely Edentulous Patients Were Randomly Classified Into Two Groups Of Twenty-four Patients Each. Group (I)�had�received A Complete Denture Made From A Polyamide Thermoplastic Material Complete Denture. Group (II) Had Received Complete Denture Made From Polymethyl Methacrylate.�Patient Satisfaction Was Evaluated Using A Questionnaire And Candidal Count Was Evaluated By Collection Of Swabs Cultured On Sabouraud�s Agar Gel Plates.

Results: There Was No Significant Difference In Mean Satisfaction Between Group�I�and Group�II�at Insertion Or 1 Month Periods (p�>0.05), However, There Was A Significant Difference In Mean Satisfaction Between Group�I�and Group�II�in 3 Months And 6 Months Periods (p�< 0.05). The Previously Mentioned Results Revealed That There Was No Significant Difference In Mean CFU Between Group�I�and Group�II�at Insertion Or 1 Month Or 3 Months Period (p�>0.05) Except In 6 Months Period Where There Was A Significant Difference In Mean CFU Between Group�I�and Group�II� (p�< 0.05).

Conclusions: Within The Limitation Of This Study We Can Conclude That, - There Was A Gradual Increase In Patient Satisfaction With Complete Denture Over Time In Both Groups. - Completely Edentulous Patients May Be More Satisfied With The Dentures Made Of Polymethyl Methacrylate More Than The Polyamide Thermoplastic Dentures. - The Polyamide Dentures May Have Less Candida Count Adherence On Their Surface Than Polymethyl Methacrylarelate.

Mohammed Atef Abd El Salam, Eman Sayed Elmasry And Randa Youssef Abd Al Gawad,

ABSTRACT
Background: The Mesio-distal Crown Diameter Of Teeth Is An Important Factor Which Affects The Alignment Of Teeth In The Bony Arches And The Development Of Occlusion During Transition Of The Dentition. Objective: Determine The Combined Mesio-distal Width Of The Permanent Mandibular Incisors And That Of The Maxillary And Mandibular Canines And Premolars In A Group Of Egyptian Children In Rural Areas Of Sohag Governorate. And To Find The Correct Relationship Of The Total Mesio-distal Widths Of Teeth Under Study. Methodology: This Study Was Held On 280 Patients With An Age Range From 12-16 Years Attending Schools In Rural Areas Of Sohag Governorate. Subjects Were Chosen To Be Free From Any Systemic Disease And Their Teeth Weren�t Carious Or Crowded. Impressions Were Made For Upper And Lower Arches. Each Impression Was Poured Immediately In Stone Plaster. Mesio-distal Widths Of Mandibular Incisors And Maxillary And Mandibular Canines And Premolars Were Measured From The Study Models Using Digital Caliper.

Results: The Teeth Size Of Males Was Slightly Larger Than That Of The Females. There Was No Statistical Significant Difference In The Mean Of Mesio-distal Tooth Width Between Right And Left Sides For Almost All Teeth Under Study. A Positive Correlation Existed Between The Sum Of The Mesio-distal Width Of Upper Right Canine And Premolars & The Sum Of The Mesio-distal Width Of The Lower Incisors Among Both Genders Combined. A Positive Correlation Between The Sum Of The Mesio-distal Width Of Upper Left Canine And Premolars & The Sum Of The Mesio-distal Width Of The Lower Incisors Among Both Genders Combined Was Evident. Conclusion: The Mesio-distal Width Of Upper And Lower Canines And Premolars Can Be Predicted By Measuring The Mesio-distal Width Of Lower Incisors Due To The Positive Correlation Found Between Them.

Yasmeen S. Mahmoud, Dalia A. Saba And Taheya A. Moussa,

ABSTRACT


Aim: Evaluation Of Push Out Bond Strength Of Resin Sealer To Dentin After Irrigation With NaOCl Followed Grape Seed Extract (GSE) Versus NaOCl Followed By EDTA. Methods And Material: A Total Of 12 Human Teeth Were Randomly Divided Into 2 Groups; (6 Teeth /group) According To The Irrigation Protocol; Intervention (5.25% NaOCl+ 13% GSE) And Comparator (5.25% NaOCl+ 17% EDTA) Groups. Mechanical Instrumentation Was Performed Coupled With Application Of The Corresponding Irrigant Protocol For Each Group. After Obturation And Thermocycling Of The Roots, Each Root Was Sectioned Horizontally Into 3 Thirds And Subdivided Into 3 Subgroups; Coronal, Middle And Apical (n=6). Each Specimen Was Aligned In The Universal Testing Machine And Push-out Test Was Performed. Statistical Analysis: Data Of Push Out Bond Strength Were Statistically Analysed Using Unpaired T Test (p<0.05).

Results: The Results Showed No Significant Difference In Bond Strength Values (MPa) Between The Intervention And Comparator Subgroups In Coronal (p=0.566), Middle (p=0.382) And Apical (p=0.177) Thirds. Within The Intervention Subgroups, The Bond Strength Values In The Apical Third (17.38�3.8 MPa) Was Significantly Higher (p=0.002) Than That In The Coronal (9.35�0.77 MPa) And The Middle Thirds (12.91�2.23 MPa).

Conclusions: Within The Limitations Of The Present Study, It Could Be Concluded That Irrigation With NaOCl Followed By GSE Has A Comparable Effect To NaOCl Followed By EDTA On Push-out Bond Strength Of Resin Sealer. GSE Represents A Better Natural Alternative Irrigant To EDTA Following NaOCl.

Ali Youssef Elgendy, Ehab Elsayed Hassanien, Abeer A. Elhakim Elgendy And Elham Ibrahim Elshaboury,

ABSTRACT


Aim: This Study Aims To Evaluate Tech Biosealer Endo In Comparison With MTA Fillapex And AH Plus Regarding Biocompatibility By Means Of Histochemical Analysis.

Materials and Methods: Tech Biosealer Endo, AH Plus, And MTA Fillapex Were Placed In Polyethylene Tubes And Implanted Into The Dorsum Of Twenty-four Albino Rats. Tissues Biopsies Were Prepared For Histochemical Analysis And Evaluated At One Week, One Month And Two Month Observation Periods After The Implantation Procedure.

Results: AH Plus Presented The Highest Mean Mast Cell Count In All Observation Periods. This Was Followed By Tech Biosealer Endo And MTA Fillapex. The Empty Implanted Polyethylene Tube Showed The Least Mean Mast Cell Count. Mast Cell Degranulation Was Most Noted At The One Week And One Month Observation Periods. Conclusion: It Can Be Concluded That Although The Subcutaneous Tissue Reactions Analyzed In The Present Study Do Not Fully Imitate Those In Root Canals And Periapical Tissues, They Are Valid In That They Comprise A Preliminary Stage In Evaluating The Biocompatibility Of The Tested Root Canal Sealers. All Implanted Sealers Induced Mast Cell Activation And Degranulation.

Khadega Ali Alkhateeb Mai Aboul Fotouh, Fatma Abdelsayed And Fady Fahim,

ABSTRACT

Objectives: The Purpose Of This Study Was To Compare The Parents� Satisfaction Toward The Post-surgical Outcomes In Newborns With Unilateral Cleft Lip And Palate Who Received Presurgical Vacuum Formed Nasoalveolar Molding Aligners (PVFAs) With Those Who Didn�t Undergo PVFAs Therapy, And To Evaluate The Effect Of PVFAs On Parent�s Satisfaction.

Materials and Methods: In This Prospective Controlled Clinical Trial, Twenty-three Non- Syndromic Infants With Unilateral Cleft Lip And Palate (UCLP) Were Included In A Period From April 2017 To April 2018. Sixteen Infants Received Presurgical Vacuum Formed Nasoalveolar Aligners (PVFAs) (Treatment Group), While Seven Infants Did Not (Control Group). At The End Of PVFAs Therapy, Only 14 Infants Succeeded To Complete The Period Of PVFAs Therapy. Questionnaires With Multiple Questions Were Used To Evaluate The Parents� Satisfaction Toward The Post-surgical Esthetics In The Groups And Post PVFAs Therapy In Treatment Group.

Results: The Parents� Satisfaction Was Higher Toward The Post-surgical Outcomes In Infants Who Received PVFAs Therapy Than Those Who Didn�t Receive Any Appliance. Also, Most Of Infants� Parents Exhibited Their High Satisfaction Toward The Outcomes Of PVFAs Therapy In Treatment Group. Conclusion: The Efficiency Of PVFAs Therapy Was High In Reducing The Nasoalveolar Deformities Associated With Newborns With UCLP And Improved The Nasal Symmetry.

Amani Ayman Mohamed, Farid Medhat Farid, Shereen Fathy Ahmed And Salma Belal Eiid,

ABSTRACT
Statement Of Problem: Maxillary Sinus May Have Some Anatomical Variations; One Of These Is The Gothical Arch In The Sinus Floor, The Maxillary Sinus Septum. It Was Noted That Septal Presence During Sinus Lift Procedures Might Cause Sinus Membrane Perforation Leading To Greater Consequences As Graft Migration With Concomitant Graft Failure And Sinus Infection. Moreover, Diagnostic Methods For Verification Of Sinus Disorders, As Endoscopy, May Be Hindered Due To Septal Presence. These Concerns Have Led To A Different Attitude Towards The Maxillary Sinus And Its Anatomical Variations. Aim Of The Study: To Assess The Anatomical Variations (prevalence, Location, Orientation, Origin, Morphology And Height) Of The Maxillary Sinus Septa In A Sample Of Egyptian Population Using 3D Cone Beam Computed Tomography. Materials And Method: This Cross-sectional Study Evaluated 111 Maxillary Sinuses Using Cone Beam Computed Tomography. Presence Of Septa, Location, Orientation, Origin, Morphology And Height Were Evaluated And Recorded. Inter And Intra Observer Agreement Were Done Using Kappa Statistics.

Results: The Prevalence Of Septa Was 33.3% In This Study. Analysis Of The Location Of The Septa Revealed That 39.5% Were In The Middle, 37.2% In The Anterior And 23.2% In The Posterior Areas. Among All Septa, The Majority Of The Maxillary Sinus Septa Traversed The Sinus In A Buccopalatal Direction (76.7%). The Mean Height Of Vertical Septa Was 7.21 Mm � 5.02 Mm, While The Horizontal Septa Presented At A Mean Level Of 13.09 �3.6 Mm From The Floor. Conclusion: Maxillary Sinus Septa Can Jeopardize The Oral And Maxillofacial And ENT Surgeons� Plans Astoundingly If Not Well Assessed. Fortunately, Pre-operative Planning Using CBCT Can Be Very Fruitful In Determining The Unique Septal Expression In Every Subject.

Ramy Magdy Abaza, Mostafa Mohamed Hosny And Hazem Mohamed Mandour,

ABSTRACT
Background: The Aim Of The Present Study Was To Determine Age And Gender Radio-graphically Based On Comparison Between CBCT And Panoramic Views Of Maxillary Sinuses. Methods: One Hundred And Twenty Patients Were Selected. Patient Divided Into Three Groups According To The Age Each Group Consist Of 40 Patients. Group 1: Young Adults (14-20 Years). Group 2: Adults (21-40 Years). Group 3: Elderly (>40 Years). CBCT And Panoramic Radiographs Were Taken For Every Patient To Evaluate Of The Volume, Vertical As Well As Horizontal Dimensions Of Maxillary Sinus.

Results: In (14-20 Years) Age Group, CBCT Was Higher Predictive Than Panorama In Height And Width. In Age Group (21-40 Years); CBCT Was Higher Predictive Than Panorama In Width And Height. While In Age Group (>40 Years); Both CBCT And Panorama Was Same Predictive Results In Both Width And Height. In (14-20 Years) Age Group CBCT Left Side MS Volume Was Higher Predictive Than Right Side. In (21-40 Years) Age Group Right Side Is Higher Predictive Than Left Side In MS Volume. In (>40 Years) Age Group CBCT Right Side Is Predictive As Left Side In MS Volume. Conclusion: CBCT Images Provide Reliable Volumetric Information For Gender And Age Determination.

Ahamed Mostafa Ahamed Elhashash, Mostafa Mohamed Hosny And Mohamed Mohamed Bayoumi,

ABSTRACT
Background: The Aim Of This Study Was To Evaluate Clinical Outcome Of The Use Of Concentrated Rich Plasma Growth Factors And Tri Calcium Phosphate With Immediate Implant At Sites Of Advanced Periodontal Destruction. Methods: Twenty Patients (8 Males And 12 Females; Age Range: 28 To 42 Years) With Advanced Periodontal Destruction Were Participated In This Study. After Tooth Extraction The Socket Was Cleaned And Irrigated With Normal Saline And Currated By Remove Any Granulation Tissue. The Implant Then Was Applied At The Socket With CGFs Membrane Around It. Beta Tri Calcium Phosphate Particles Was Applied Into The Small Gap Between The Implant And Bone And Buccally To Augment The Absorbed Crestal Bone Using A Plastic Or Titanium Applicator. The Bone Graft Particles Then Covered By The CGF Membrane. Modified Plaque Index (PI), Gingival Index (GI), Peri-implant Probing Depth (PD) And Osstell Were Assessed After, 3 And 6 Months Following Treatment To Monitor The Patient Oral Hygiene Status. Marginal Bone Loss And Bone Density Were Evaluated 3 And 6 Months.

Results: Mean Modified Plaque Index And Modified Gingival Index Was A Statistically Non-significant At 6 Months. Mean Probing Depth Was Statistically Significant At 6 Months. Mean Crestal Bone Loss At 6 Months Was 1.0 � 0.5 At Buccal Surface And 0.9� 0.4 At Lingual Surface. At 3 Months The Mean Bone Density Was 647.40 � 138.48 While At 6 Months It Was 788.50� 105.51. The Difference Was A Statistically Significant At 6 Months. Conclusion: Within The Limits Of The Present Study, The Use Of CGFs With The Immediate Placement Of Dental Implants In Periodontally Compromised Extraction Sites Reduces Marginal Bone Loss Around The Implant.

Ahmed Abdelmaqsoud Abdelmageed Saad, Hazem Mohamed Mandour And Mostafa Mohamed Hosny,

ABSTRACT
Background: The Aim Of The Present Study Was To Evaluate Clinically And Radiographically, The Alveolar Bone Status After Socket Preservation Using ?-tricalcium Phosphate With And Without IPRF Of Extracted Teeth Affected By Periodontitis Stage IV Grade C. .Methods: The Patients Were Randomly Assigned To Two Groups: Group I: (10 Patients) For Those Periodontal Surgical Procedures Of The Defects Were Filled With ? Tricalcium Phosphate Alone. Groups II: (10 Patients) Were Received Periodontal Surgical Procedures Where The Defect Was Filled With ? Tricalcium Phosphate Mixed With I-PRF. Cone Beam Computed Tomography Were Taken At Time Of Initial Examination And At 6 Months To Evaluate The Alveolar Bone Length, Width And Density.

Results: In The Present Study, Immediately, And 6 Months; There Was No Statistically Significant Difference Between Lengths In The Two Groups. ?-TCP /I-PRF Group Showed A Statistically Significant Less Percentage Of Change Than ?-TCP Group. Immediately, And 6 Months; There Was No Statistically Significant Difference Between Width In The Two Groups. ?-TCP /I-PRF Group Showed A Statistically Significant Less Percentage Of Change Than ?-TCP Group. Immediately, And 6 Months; There Was No Statistically Significant Difference Between Mean Density In The Two Groups. ?-TCP /I-PRF Group Showed A Statistically Significant Increase Bone Densitythan ?-TCP Group. Conclusion: Extraction Sockets Treated With I-PRF Combined With Alloplast Showed Least Reduction In Alveolar Ridge Width And Height At The End Of The Study Period, As Well As Greatest Increase In Bone Density Than The Other Studied Groups. Immediate Socket Augmentation Might Provide Advantages In The Management Of Extraction Sockets In Periodontally Compromised Teeth.

Mohamed Ahmady Abdelrahman Ahmed, Ahmed Ahmed Hussein Elfeky And Ahmed Mohamed Hosney,

ABSTRACT
Background: The Present Study Was Performed To Evaluate Immediate Implant Placement With Socket-shield Technique By Bone Trephine Bur Versus Conventional Technique In Maxillary Aesthetic Zone. Methods: Patients Were Randomly Divided In To Two Groups:For Group A: Immediate Implant With Socket-shield Technique By Surgical Bur. For Group B: Immediate Implant Placement With Socket-shield Technique By Trephine Bur. After Surgery Each Patient Were Evaluated As Follows: Pain (VAS), Peri-implant Infections With Suppuration, Implant Stability, Marginal Bone Height And Bone Density Around The Implant At Interval 3, 6 Months.

Results: In The Present Study, Clean Cut: Trephine Group Showed A High Clean Cut (100.0%) Than Conventional (bur) Group (62.5%). Trephine Group No Chance To Harm Adjacent Teeth (0.0%) Than Conventional (bur) Group That Has (25.0 %) To Harm Adjacent Teeth. At 1, 2, 3 And 6 Months; There Was No Statistically Significant Difference In Mean Marginal Bone Loss And Mean Bone Density Measurements In The Two Groups. Conclusion: Socket Shield Represents A Promising Technique To Preserve The Extraction Site Associated With Implant Placement. By Using The Trephine, A Circular Clean Cut Is Obtained. Trephine Group Showed A Less Time Of Operation Than Conventional (bur) Group.

A.S. Rozeik, K. Fawzy El-Sayed, And S. El-Kholy,

ABSTRACT
Objective: The Present Study�s Aim Was To Test The Proliferation And Adhesion Of Human Gingival Fibroblasts To Different Polymer Dental Implant-abutment Materials Including Polyetheretherketone (PEEK) And Hydroxyapatite Reinforced Polyetheretherketone (HA-PEEK) In Comparisons To Conventional Abutment Materials As Titanium (Ti).

Materials and Methods: 40 Specimens Per Group Were Prepared With The Dimension Of 10 Mm (length) � 10 Mm (width) � 1 Mm (height) Per Specimen. Wettability Properties Of The Materials Were Assessed By Water Contact Angle Measurement (after The Adjustment Of Their Surface Roughness). Human Gingival Fibroblasts (HGFs) Proliferation Was Assessed Using Proliferation Assay After 24 Hours And 72 Hours Cell Culture. While, Cell Adhesion Strength Was Evaluated After 24 Hours Of Cell Culture By Applying Lateral Shear Forces In The Form Of Two Shaking Intensities 320 And 560 Rpm.

Results: Regarding The Wettability Properties Using The Water Contact Angle System, Ti Showed The Lowest Contact Angle Followed By PEEK And HA-PEEK With No Statistical Significance Difference (P> 0.05). While, HA-PEEK Showed The Highest Ratio Of Cell Viability At 24 Hours Followed By PEEK And Ti With No Statistically Significant Difference Between The Tested Groups (P> 0.05). While, At 72 Hours Ti Showed The Highest Ratio Of Cell Viability Followed By HA-PEEK And PEEK With Statistically Significant Difference Between Ti And PEEK Groups (P> 0.05) Using MTT Proliferation Assay. Furthermore, PEEK Showed The Best Adhesion Strength After 320 Rpm Shaking Intensities Followed By HA-PEEK And Ti. While At 560 Rpm, HA-PEEK Showed The Best Adhesion Strength Followed By PEEK And Ti. Conclusion: Dental Implant Abutment Material And Its Wettability Affect HGFs Proliferation And Adhesion. Furthermore, Polymer Abutment Materials Showed Similar Interaction Properties With HGFs Regarding Proliferation And Adhesion In Comparison To The Conventional Titanium Abutment Material.

Rahma A Abuhashema, Mai M Akah, Noha S Abu-Taleb And Omayma M Safwat,

ABSTRACT
Objective: The Purpose Of This Clinical Trial Was To Assess The Effect Of Glass Ionomer Restoration With And Without Application Of Nano Silver Fluoride (NSF) Solution On The Remaining Carious Dentin Remineralization And Tertiary Dentin Formation After Partial Caries Removal In Occlusal Carious Molars. Methods: This Was A Split Mouth Study That Included Twenty-two Patients Having Two Contralateral Deep Occlusal Carious Molars. A Total Of 44 Cavities Were Prepared With Partial Caries Excavation Technique. For Each Patient, The Cavity At One Side Was Treated With 0.2 Ml Of NSF Solution Prior To Glass Ionomer Restoration With Glass Hybrid System; This Comprised The Study Group. For The Other Side, Glass Hybrid Was Directly Applied Into The Cavity; This Comprised The Control Group. Standardized Digital Periapical Radiographs Were Performed At Baseline And After 6 Months. The Carious Dentin Density And The Remaining Dentin Thickness Were Assessed.

Results: 16 Out Of The 22 Included Patients Completed The Study. Statistically Significant Increase In Both The Dentin Density And The Remaining Dentin Thickness Were Found In Both Groups After 6 Months. The Percentage Change In The Density After 6 Months Was Significantly Higher For The Study Group. However, No Statistically Significant Difference Was Found Between Both Groups In The Thickness Of The Tertiary Dentin Formed. One Case Of Clinical Failure In Each Group Was Observed.

Conclusions: Partial Caries Removal For Deep Carious Lesions And Glass Hybrid Restoration With And Without Prior Application Of NSF Proved Remineralization Of The Remaining Carious Dentin, And Tertiary Dentin Formation. Carious Dentin Remineralization Was Better Using NSF Which Indicates Its Promising Role In Caries Arrest.

Nada Farid Shehab, Reham ElBasty And Hesham Katamish,

ABSTRACT
Statement Of Problem: Veneered Zirconia Restorations Exhibit Very High Modulus Of Elasticity And High Incidence Of Veneer Chipping. Therefore, The Continuous Search For High Strength Esthetic Restorations Is Never Ending.

Purpose: To Evaluate The Fracture Resistance And Mode Of Failure Of Of CAD/CAM Milled PEEK Core Veneered By Milled High Impact Polymer Composite Compared To CAD-On Zirconia Core Veneered By Lithium Disilicate.

Materials and Methods: Fourteen Freshly Extracted Molars Were Mounted In Epoxy Blocks And Uniformly Prepared With A 1.0 Mm Circular Deep Chamfer Finish Line. They Were Divided In To Two Groups According To The Type Of Material (n=7): Group A: Teeth Restored By ZirCAD Core Veneered By E.max-CAD And Group B: Teeth Restored By PEEK BioHPP Core Veneered By HIPC. All Crowns Were Adhesively Cemented. They Were Then Subjected To Thermo-mechanical Aging Using A Chewing Simulator Then Static Compressive Loading Till Failure Using A Universal Testing Machine And Failure Types Were Determined.

Results: PEEK Group Recorded Statistically Non-significant (p>0.05) Higher Fracture Resistance Mean Value (2851.1�241.02 N) Than Zirconia Group (2786�240 N) As Indicated By Unpaired T-test. The Mode Of Fracture In Zirconia Group Was Manifested As Veneer Chipping In Almost All Of The Specimens. All PEEK Specimens Showed Cohesive Failure In Both Core And Veneer Layers Upon Failure.

Conclusions: Within The Limitations Of This Study, It Can Be Concluded That PEEK Veneered By HIPC Can Be Considered A Potential Permanent Crown And Bridge Material With Comparable Results To Veneered Zirconia Restorations.

Michael Emad, Carl Hany And Hesham Katamish,

ABSTRACT
Statement Of Problem: Marginal Inaccuracy Causes A Space Between Restoration And Prepared Tooth, Which Accelerates Cement Dissolution, Leading To Secondary Caries, Pulpal Lesions, Postoperative Sensitivity, Periodontal Disease And Marginal Discoloration. Marginal Gap Should Be Less Than 120�m. Aim Of This Study Is To Evaluate Vertical Marginal Gap Of PEEK (Bio-HPP) Veneered With CAD/CAM Composite Veneer (HIPC) As Compared To Zirconia Veneered With CAD-On Lithium Disilicate Glass Ceramic. And The Effect Of Ageing On The Gap Of Both Restorations.

Materials and Methods: 40 Extracted Molars Were Prepared, Divided Into Two Groups, Control Group (ZR) (n=20), Teeth Restored With IPS E.max ZirCAD Copings Veneered With IPS E.max CAD And Intervention Group (PEEK) (n=20), Teeth Restored With BreCAM BioHPP Copings Veneered With BreCAM.HIPC. Each Specimen Was Photographed Using Leica S8 APO Stereomicroscope Under Magnification 32X And Image Analysis Was Done. Measurements Were Taken Twice Before And After Thermo-mechanical Cycling.

Results: PEEK Group Recorded Higher Gap Mean Values (49.88�7.97um) Than Zirconia (18.39�3.1um). This Was Significantly (p < 0.05) As Confirmed By Mann-Whitney Test, But All Measurements Were Clinically Acceptable. And Thermo-mechanical Cycling Had No Effect Of On Both Groups. Conclusion: PEEK Veneered With Composite Can Be Used Intra Orally For Single Crown Restorations.

Angel W. Habib , Moustafa N. Aboushelib And A.Nour A. Habib,

ABSTRACT

Objectives: To Study The Effect Of Aging On The Surface Roughness And Surface Hardness Of Stained Different Dental Ceramics.

Materials & Methods: Six Different All Ceramic Substrates (n=10/material) Mark II, Empress CAD, E.max CAD, ZirCAD LT, ZirCAD MT Multi And Suprinity Were Used. The Ceramic Materials Were Stained With Either IPS Ivocolor (n=5/material) Or Vita Akzent Stain (n=5/material). Aging Was Done According To ISO 6872. The Surface Roughness (Ra) Was Evaluated Using Profilometer, While The Surface Microstructure Was Examined Using Scanning Electron Microscopy (SEM). The Surface Hardness Was Measured Using Vicker�s Hardness Test. All These Tests Were Performed Before And After Aging. The Two-way ANOVA Tests And Bonferroni�s Post-hoc Test Were Used For Statistical Analysis.

Results: Aging Had Significantly Increased The Surface Roughness (?Ra) In All Specimens. The SEM Images Supported These Results As It Showed Scratches And Pitting Of The Surface. Aging Also Significantly Decreased The Surface Hardness, However ZirCAD LT When Stained With IPS Ivocolor And ZirCAD MT Multi And E.max When Stained With Vita Akzent Showed Significant Increase.

Conclusions: Aging Had Significantly Affected The Surface Roughness And Hardness Of The Stained Monolithic Ceramics.

Mostafa Magdy Awad Mostafa, Mona Shoeib And Hani El-Nahass,

ABSTRACT
Objective: The Aim Of This Study Is To Clinically Evaluate The Stability Of Short Implants (5.5mm) Versus Standard Implant (10mm) Placed With Osteotome Sinus Floor Elevation In Patients With Edentulous Posterior Maxilla.

Materials and Methods: The Purpose Of This Study Is To Clinically Evaluate The Stability Of Short Implants (5.5mm) Versus Standard Implants (10mm) Placed With Osteotome Sinus Floor Elevation Technique In Medically Free Patients. This Study Included 16 Implants Placed In 16 Patients. With 8 Implants In Every Group.

Results: Pain And Swelling Were Measured 12 And 8 Days Respectively After Dental Implant Placement. Recession, Probing Depth, Bleeding And Plaque Indices Were Recorded 4 Months And 12 Months After The Day Of Implant Placement. Conclusion: After Analysis Of The Data Of This Present Study, We Can Conclude The Following: The Two Implant Placement Protocols Showed Comparable Implant Stability Quotient (ISQ) And Implant Success. In Terms Of Crestal Bone Loss, No Statistically Significant Difference Was Found Between Both Groups Initially, 6 And 12 Month Followup. Except After 4 Months, A Significantly Higher Mean Crestal Bone Loss Was Recorded In Long Implants With Sinus Lift Higher Results Of Post-operative Pain And Swelling (12 And 8 Days Respectively) Were Evident In The Control Group (standard Implant With Osteotome Sinus Floor Elevation) Than The Intervention Group (short Implant 5.5mm). But Found To Be Statistically Insignificant PPD, And MPI Showed No Statistically Significant Difference Between Both Groups. MBI Showed A Significant Higher Values In Long Implants After 4 Months (p=0.006) Than Short Implants.

Laila Akmal, Mai Yousry, Essam Abd Elhafez And Mai Mamdouh,

ABSTRACT


Aim: The Aim Of The Study Was To Assess The Efficacy Of Caries Excavation Using The Papain-based Chemo-mechanical Method (Brix 3000) In The Reduction Of Streptococcus Mutans Count In Occlusal Carious Cavities

Materials and Methods: Twenty-three Patients Having Decayed Molars Were Selected Randomly And Divided Into Two Groups: Group A Before Being Treated By Brix 3000, Group B After Being Treated By Brix 3000. Two Dentin Samples Were Collected Before And After Caries Removal And Were Immediately Transferred To Sterile Disposable Test Tube Containing 1.5 Ml Thioglycollate Medium. Statistical Analysis Was Done Using Wilcoxon Signed Rank Test For Paired (matched) Samples.

Results: The Results Revealed A Statistically Significant Difference In The Mean Values Between Dentin Samples At The Baseline 230.2 � 76.1and After The Application Of The Brix 104.1 � 43.0 In CFU/ml Where (p<0.001). Conclusion: Brix 3000 Is A Viable Option For The Minimally Invasive Removal Of Dental Carious Tissue, Obtaining Significant Reductions In Total Bacterial Count.

Hoda O. Fouda, Mohamed F. Haridy And Mohamed R. Farid,

ABSTRACT


Aim: To Evaluate The Efficacy Of Immediate Dentin Sealing Using Universal Adhesive In Comparison To Delayed Dentin Sealing In The Reduction Of The Hypersensitivity In Teeth Prepared For Indirect Tooth Composite Restorations Using Visual Analog Scale (VAS).

Materials and Methods: Fifty-four Patients Between 18 And 30 Years Of Age Were Recruited And Randomized To The Treatment Protocols. After Baseline Preoperative Data Collection, Diagnosis Of Caries Was Done Depending On The Basis Of Clinical Examination That Was Done Tentatively And Radiographic Examination Was Done As Well. After Cavity Preparation Was Done, For The Cavities To Be Managed With Immediate Dentine Sealing, The Single Bond Universal Adhesive Was Applied Over All The Dentinal Surfaces According To The Manufacturer�s Instructions. For The Cavities To Be Managed With Delayed Dentine Sealing, No Adhesive Was Applied On The Dentinal Surfaces And The Impression Was Taken Directly After Cavity Preparation Using Two-step Technique. Hyper-Sensitivity Was Evaluated Both Intra-operatively (at Baseline One Day After The Cavity Preparation: By Applying Air From The Triple Way Syringe Directly Over The Prepared Cavity And One Week During Temporization) And Post Operatively Using (VAS). After Try In And Cementation Of The Indirect Composite Restoration Post-cementation Evaluation Was Done. (VAS) Results Were Tabulated And Statistically Analyzed.

Results: Delayed Dentin Sealing Group (4.75) Had A Significantly Higher Median Value Of (VAS) Than Immediate Dentin Sealing Group (0.32) (P<0.001). There Was A Significant Difference Between The Scores At Different Follow-up Intervals (P<0.001). The Highest Median Value Of (VAS) Was Found At Baseline (3.37) Followed By That Found One Week During Temporization (2.91) While The Lowest Median Value Was Found One Week After Cementation (0.16). Pairwise Comparisons Showed Median Value Found One Week After Cementation (0.16) To Be Significantly Lower Than Those Found At Baseline (3.37) And One Week During Temporization (2.91) (P<0.001).

Conclusions: Inter-operative And Post-cementation Hypersensitivity Problem After Indirect Resin Composite Restorations Could Be Solved By Using The Immediate Dentin Sealing Protocol Using A Self-etch Adhesive.

Haneen A ELmoselhy, Mohamed F. Haridy And Olfat E. Hassanein,

ABSTRACT

Objectives: To Assess The Reliability And Reproducibility Of Secondary Caries Diagnosis Using Light Induced Fluorescence Device �Soprolife� In Comparison To Conventional Visual-tactile Method According To Modified USPHS Restoration Assessment.

Materials and Methods: A Total Of 29 Volunteer Patients Were Assigned In This Study. Each Patient Had At Least One Defective Posterior Occlusal Resin Composite Restoration. The Restoration Was Evaluated By Two Diagnostic Methods (D), Where D1 Represents Visual-tactile Assessment Method (according To Modified USPHS1) And D2 Represents Light Induced Fluorescence Intraoral Camera(SoproLife Camera) Intra And Inter-rater Reliability Were Analyzed Using Cohen�s And Fleiss� Kappa Respectively. McNemar�s Test Was Used To Study Inter And Intro Group Comparisons

Results: McNemar�s Test Showed That For All Raters And In Different Follow-up Intervals There Was No Significant Difference In Caries Detection With Both Methods (P>0.005). Conclusion: The Conventional Visual-tactile Method As Well As The Light Fluorescence Device SOPROLIFE Were Found To Be Valuable Complementary Diagnostic Methods For Diagnosis Of Secondary Caries Around Existing Restorations.

Mohamed T. Heiba, Mohamed F. Haridy And Olfat E. Hassanein,

ABSTRACT

Objectives: To Investigate The Incidence Of Caries In Pits And Fissures Sealed With A Bioactive Sealant Compared To A Fluoride Releasing Resin Based Pits And Fissures Sealant In Preventive Treatment Procedures In Adult Population Over A Six-month Period.

Materials and Methods: A Total Of 40 Volunteer Patients Who Fulfilled The Inclusion Criteria Were Selected For This Randomized Split-mouth Clinical Trial. In Each Patient, The Two Types Of Pit And Fissure Sealant Were Used. A Fluoride-releasing Pit & Fissure Sealant (Seal-Rite�, S1) Was Placed In One Side, While A Bioactive Pit & Fissure Sealant (Embrace� WetBond�, S2) On The Contralateral Side; Such That The Total Number Of Sealants Placed In All Patients Were (N=80). All Sealants Were Evaluated Using Soprolife� Intra-oral Camera By Two Investigators Who Were Blind To The Material And Not Involved With The Treatment Procedures Used For The Restorations. Data Was Statistically Analyzed Using Cohen�s Kappa And Chi-square Tests.

Results: Immediate And 3-month Readings Revealed 100% Absence Of Caries In Both Groups. At 6 Months, Caries Developed In 8.8% Of Patients In S1, In Comparison To No Cases (0%) In S2. Chi Square Test Revealed No Statistically Significant Difference In Carried Incidence Between Groups. Conclusion: Bioactive Pit And Fissure Sealant As Well As Fluoride Releasing Sealant Could Be Considered A Valuable Preventive Method To Control Caries In Permanent Molars Over Six-month Period.

Doaa Mohamed Sayed, Nadia A Abbas And Nora Cheta,

ABSTRACT
This Study Aimed To : Compare The Retention Of PEEK And BRE.FLEX (second Edition) Materials In Maxillary Class III Modification 1 Removable Partial Dentures Using Digital Gauge Force Device.

Materials and Methods: Thirty Four Patients Having Kennedy Class III Modification 1 Maxillary Partially Edentulous Ridges With Fully Dentate Mandibular Arch Were Divided Into Two Equal Groups To Fabricate The Thermoplastic Materials. The First Group Received PEEK Material. The Second Group Received Bre.Flex Material. The Retention Was Measured Using Digital Force Gauge Which Is An Advanced Type Of Force Meter Device : At The Time Of Denture Insertion, After Two Weeks And After Four Weeks Of Denture Insertion. The Collected Data Were Tabulated And Statistically Analyzed.

Results: Showed That The Difference Between The Two Groups Was Statistically Significant Was Reported Between Two Groups Regarding Retention. Conclusion : The Mean Retentive Force Required To Remove The Bre-flex Removable Partial Denture Was Found To Be Statistically Significant Lower Than This Required To Remove PEEK Removable Partial Denture .

Nada M. Reda, Ahmed M. Halawa, Nehad S. Taha And Dina M. Abdel-Khalek,

ABSTRACT
Osteoporosis Is A Medical Condition Characterized By Low Bone Density And Micro-architectural Deterioration Of Bone. Antiresorptive Drugs And Estrogens Are Considered The Common Traditional Therapy For Post-menopausal Osteoporosis.

Aim: The Aim Of This Study Was To Evaluate The Action Of Red Clover And Chickpea On The Alterations Of The Mandibular Alveolar Bone And Periodontal Ligaments Induced By Ovariectomy In Albino Rats. Methods: 35 Adult Female Albino Rats Were Divided Into 5 Groups Each Of 7 Rats: The Negative Control Group (group I) That Were Only Subjected To Sham Operation And Did Not Receive Any Intervention, The Positive Control Group (group II) That Were Subjected To Ovariectomy Without Any Treatment, The Alendronate Sodium (bisphosphonate) Experimental Group (group III) That Were Subjected To Ovariectomy And Received Fosamax Daily For 3 Months One Month Postoperative, The Chickpea Experimental Group (group IV) That Were Subjected To Ovariectomy And Received Chickpea Extract Daily For 3 Months One Month Postoperative. And The Red Clover Experimental Group (group V) That Were Subjected To Ovariectomy And Received Red Clover Extract Daily For 3 Months One Month Postoperative. After Rats Were Terminated, Mandibular Molar Regions Were Excised And Stained For H&E Stain And Anti-fibronectin (FN) Immunohistochemical Stain. Specimens Were Also Examined For Bone Mineral Density (BMD).

Results: Histological And Immunohistochemical Examination Showed Inflammatory Reaction In Alveolar Bone And Oblique Fibers That Decreased Over The Course Of Treatment With Phytoestrogens. Statistical Results Showed That There Was No Significant Difference Between Phytoestrogens And Alendronate Sodium Drug (bisphosphonate) And There Was A Significant Difference Between Group II And All Experimental Treated Groups As Well As Between Group I And Experimental Treated Groups. Conclusion: Alternative Hormone Replacement Therapy Using Phytoestrogens Was Associated With Variable Grades Of Statistically Significant Reduction Of Osteoporosis And Periodontitis.

Shymaa H. Elsharkawy, Maha Wagdy And Ahmed E. Fayyad,

ABSTRACT
This Study Was Conducted To Evaluate The Effect Of Fiber Meshwork Reinforcement On The Fracture Of Maxillary Complete Dentures. Two Groups Of Dentures Were Fabricated. Five Dentures In Each Group. The First Group Had Conventional Non-reinforced Maxillary Complete Dentures. The Second Group Had Fiber-meshwork Reinforced Maxillary Complete Dentures. All Samples Were Individually Mounted On A Computer Controlled Materials Universal Testing Machine, Where Load Was Applied Bilaterally Using T-shaped Load Applicator. Initial Crack Load, Fracture Load And Fracture Pattern Were Recorded For Each Tested Denture. There Was No Statistical Significant Difference In Both Initial Crack And Fracture Loads Of Both Groups, On The Other Hand The Fracture Pattern Of The Fiber-meshwork Reinforced Group Was More Favorable And Less Extensive Compared To The Fracture Pattern Of The Non-reinforced Group. In The Clinical Situation, Both Conventional And Fiber-meshwork Reinforced Maxillary Complete Dentures Are Expected To Be Strong Enough To Resist Fracture Under Maximum Biting Forces, With The Fiber-meshwork Reinforced Dentures Having A More Favorable And Less Extensive Fracture Pattern Compared To The Conventional Non-reinforced Dentures.

Mohammed Mostafa Rehab, Reem Ahmed Lutfy And Shaimaa Gawdat,

ABSTRACT
The Aim Of This Study Was To Evaluate The Time Consumed And Total Removal Of Smart Paste Bio System Compared To AH-plus Sealer And Gutta-percha In Obturated Single Rooted Teeth By Using Hedstrom Files With Gates-Glidden Burs Compared To D-race Retreatment System.

Materials and Methods: Fifty Two Single-rooted Teeth Were Used In This Study. The Teeth Were Decoronated, Prepared Using The Protaper Rotary System And Obturated Using The Modified Single Cone Technique. The Samples Were Then Divided Into Two Main Groups (n=26) According To The Sealer Used In Obturation: Group I: AH-plus Sealer. Group II: Smart Paste Bio Sealer. Each Group Was Further Subdivided Into Two Subgroups (n=13) According To The Method Used In Removal Of Obturation Material: Subgroup 1: H-files And Gates-Glidden Drills. Subgroup 2: D-race Retreatment System.

Results: The Results Revealed That There Is No Significant Difference Between Smart Paste Bio Sealer And AH-plus Sealer Regarding Residual Debris. Regarding The Method Of Root Canal Filling Removal, D-race Retreatment System Showed Significantly Faster And Efficient In (GP/AH-plus) Obturation System Removal Than H-files And Gates Glidden And Slower But Efficient In (SPBio) Obturation System Removal Than H-files And Gates-Glidden.

Ghada Adel Tahoun, Sara Ahmed Mahmoud, Amr Ezzat Abdul Latif And Lobna Mohamed Shalaby,

ABSTRACT
AIM: To Provide Information On The Frequency Of Hypodontia In Children Cancer Survivors Who Received Chemotherapy Before 4 Years Of Age. METHOD: A Total Of 144 Cancer Survivor Who Received Anti Neoplastic Chemotherapy At Children Cancer Hospital Egypt 57357 Before They Were 4 Years Old Were Selected Using Stratified Random Sampling. Those Who Met The Eligibility Criteria Were Asked To Attend For A Panoramic Radiographic Examination. Dental Panoramic Radiographs Were Examined To Assess Hypodontia, Excluding Third Molars. RESULTS: The Frequency Of Hypodontia In Childhood Cancer Survivors Who Received Antineoplastic Chemotherapy Before The Age Of 4 Is 9.72% (14 Of 144). There Was No Statistical Significant Difference Between Tumor Types And Hypodontia (P>0.05). CONCLUSION: This Study Confirms That Children Who Receive Antineoplastic Chemotherapy Before The Age Of 4 Are At A Higher Risk Of Developing Hypodontia.

Christine Atef Banoub, Mushira Mohamed Abdelatif Dahaba And Enas Anter Abd El Ghafar,

ABSTRACT
Background: Forensic Odontology Is Described By The Federation Dentaire Internationale As �that Branch Of Dentistry Which, In The Interest Of Justice, Deals With The Proper Handling And Examination Of Dental Evidence And The Proper Evaluation And Presentation Of Dental Findings�. This Study Aimed To Investigate And Analyze The Difference Between Egyptian Males And Females In Mandibular Indices� Measurements And Mental Foramen Position Using Cone Beam Computed Tomographic Images.

Materials and Methods: Thirty Six Patients Were Included In This Study. They Were Divided Equally Into Two Groups. The First Group Included Eighteen Females And The Second Group Included Eighteen Males. All Of The 36 Participants Were Scanned Using CBCT Scanner Then Six Indices Were Obtained From The Reformatted Panoramic Images Of Each Mandible (superior Index Of Mental Foramen Position, Inferior Index Of Mental Foramen Position, Mental Index, Gonial Angle, Antegonial Index And Ramus Height).

Results: It Was Found That There Was Statistical Significant Difference Between Males And Females Regarding Three Parameters Namely Superior Index Of Mental Foramen Position, Inferior Index Of Mental Foramen Position And Ramus Height However, There Was No Statistical Significant Difference Between Males And Females Regarding Three Parameters Namely Gonial Angle, Mental Index And Antegonial Index. Assessment Of Intra-observer And Inter-observer Reliability Regarding All Linear And Angular Measurements Showed Highly Significant Agreement Between Observers. Conclusion: Certain Mandibular Indices As: Superior Index Of Mental Foramen Position, Inferior Index Of Mental Foramen Position And Ramus Height Of Mandible Are Rendered As Reliable Gender Discriminators In Forensic Odontology. The Mean Values Of Males Are Higher Than Females Regarding The Superior Index Of Mental Foramen Position, Inferior Index Of Mental Foramen Position And Ramus Height. Certain Mandibular Indices As: Mental Index, Gonial Angle And Antegonial Index Are Rendered As Non-reliable Gender Discriminators In Forensic Odontology. Cone Beam Computed Tomography Is Considered As The Imaging Modality Of Choice To Assess The Role Of Mental Foramen Position And Mandibular Parameters In Gender Determination.

Mohamed Mohsen Hussein Elbanna, Samar Sewilam And Sherif Ali,

ABSTRACT


Purpose: The Aim Of This Study Is To Evaluation Of Purabone As An Osteoinductive Material In Comparison With Tricalcium Phosphate In Obliteration Of Endophytic Mandibular Cysts Materials And Method: Twelve Patients Were Selected From The Outpatient Clinic Of Oral And Maxillofacial Surgery At Faculty Of Dentistry, Cairo University During The Period From 2015 Through 2017. Result: Estimation Of 6 Months Postoperative Conventional CT Scans For All Patients We Found That 100% Of Patients In Control Group (Group B) Had Increase In Radiodensity While 66.7% Of Patients In Intervention Group (Group A) Had Increase In Radiodensity Conclusion: Increasing The Feasibility Of Plant Derived Materials With Osteoinductive Properties That Aids In Bone Regeneration. Purabone In Collagen Matrix Has The Effect Of Increasing New Bone Formation. Tricalcium Phosphate Had Better Results In Bone Formation In Comparison With Purabone. Plant Derived Purabone Xenograft Became Realistic And This Will Change The View Of Surgeons Towards Xenografts.

Ahmed Mostafa Hassan, Amal Fathy Kaddah And Ahmed Emad Fayyad,

ABSTRACT
Randomized Clinical Trial Was Carried Out To Compare The Retention Of Mandibular Complete Denture Constructed From Two Different Materials; Metal Reinforced Polyamide And Conventional PMMA. Twelve Completely Edentulous Patients. The Patients Were Divided Into Two Equal Groups, Group I Received Conventional Heat Cured Maxillary Denture And Metal Reinforced Polyamide Mandibular Denture And Group II Received Conventional Maxillary And Mandibular Heat Cured PPMA. Patients Of Both Groups Were Evaluated By Retention Measurements At The Time Of Prosthesis Insertion As Well As Three And Six Weeks Later By Digital Force Meter. The Results Of This Study Showed That Retention Measurements In Group I Were Greater Than That Of Group II At Time Of Denture Insertion, 3 Weeks And 6 Weeks Post Insertion.

Menna Mosaad El Said , Alaa Nawwar And Farid Medhat,

ABSTRACT

Objectives: The Study Aimed To Assess The Distance Between Root Apices Of Mandibular Premolars And Molars And The Superior Border Of The Cortical Boundary Of The Inferior Alveolar Canal (IAC) Among A Sample Of Egyptian Population. Materials And Methods:. The Study Was A Cross Sectional Retrospective Study Performed On 172 Mandibular Permanent Premolars And Molars From 43 CBCT Scans Belonging To Egyptian Individuals. Radiographic Examination Was Done Using Planmeca Promax 3D Mid CBCT Machine With Image Capture Parameters Set At�FOV Of 20 X 20 Cm, 90 KV, 8 MA And An Exposure Time Of 13.5 Seconds. The Voxel Size Was 0.4 Mm

Results: A Total Of 41 Second Mandibular Premolars And 42 First And 42 Second Mandibular Molars Were Included, The Longest Mean Distance To The Inferior Alveolar Canal Was Recorded By Mesial Root Of First Molar With Mean Distance 4.78 � 2.52 Mm, Followed By The Distal Root Of The First Molar (4.2 � 2.37), Second Premolars (3.13� 2.6), Then Mesial Root Of Second Molar Which Showed Mean Distance Of 2.42� 2.06. The Distal Root Of The Second Molar Was The Closest To The IAC, With An Average Distance Of 1.7 � 1.95 Mm. Conclusion: Within The Limitations Of This Study, The Roots Of The Second Molars Were Significantly Closer To The Canal Than The Roots Of The First Molars And First And Second Premolars.

Heba Ashraf Abd El Sabour, Mahmoud Hamdy Eid, Salah El Din El Behery And Randa Youssef Abd Al Gawad,

ABSTRACT
Background: The Effect Of Prolonged Digit Sucking Habit Is A Common Oral Health Problem And Could Affect The Quality Of Life. Therefore, It Is Important For The Dentist To Understand This Habit Well To Be Able To Help The Parents And The Child Relate To It And To Manage The Child�s Dental Situation. Objective: The Aim Of This Study Was To Determine The Prevalence Of Malocclusion Among A Group Of Egyptian Children With Digit Sucking Aged 3 To 6 Years. Patients And Methods: This Study Was Performed On 185 Egyptian Children Aged 3 To 6 Years. It Was Performed In The Department Of Pediatric Dentistry, Faculty Of Dentistry, Cairo University, Egypt.

Results: Malocclusion Was Present In 61.1% Of The Sample. Anterior Open Bite Was The Commonly Seen Condition (32.4%), Followed By Increased Over-jet (21.6%); Deep-bite (14.6%), Posterior Cross-bite Unilaterally (7%) Then Anterior Cross-bite And Bilateral Posterior Cross-bite Were Present In 4.9% Of The Sample. 23.2% Of The Sample Had More Than One Condition. Presence Of Blisters Was Seen In 44.9% Of The Sample. Conclusion: The Prevalence Of Malocclusion Is High In Children With Digit Sucking Habit. Digit Sucking Habit Is More Prevalent In Females, In Children Ranging From Three To Six Years Of Age. The Greatest Percentage Of Malocclusion Occurs In The 6 Years Old Children.

Moteea Abdulsalam Ahmed Sanad , Basma Gamal Mousa And Khaled Amr,

ABSTRACT
Temporomandibular Joint TMJ Disorders TMDs Is A Umbrella Term For A Variety Of Conditions Of The Joint And Mastication Muscles. TMJ Arthrocentesis And Intra-articular Injection Are Commonly Known And Used As Minimally Invasive Surgical Treatment Of Tmj Disc Displacement With Reduction. Aim Of The Study: To Compare Between Arthrocentesis Followed By Intra Articular Injection With Plasma Rich In Growth Factors PRGF Versus Arthrocentesis Alone. Patients And Methods: Sixteen Patients Diagnosed With Anterior Disc Displacement (ADD) Were Divided Into; Intervention And Comparative Group. Clinical Outcome Parameters Were Assessed At Baseline And At 6, 12, 18 And 30 Weeks Postoperatively.

Results: Both Groups Showed Significant Improvement Of Pain And Mouth Opening, The Evaluated Parameters Showed Insignificant Differences Between The Two Groups Throughout The Study Intervals With The Exception That The PRGF Group Showed Statistically Significant Pain Reduction And Mouth Opening Improvement In 30 And 6 Weeks Postoperative Respectively (p = 0.01 , 0.03) Conclusion: Both TMJ Arthrocentesis With Intra-articular Injection Of PRGF Or Arthrocentesis Only Was Proved To Reduce Symptoms Of Pain And Limited Mouth Opening And To Maintain Improvements Over Time. PRGF Injection After Arthrocentesis Revealed Some Superiority In Pain Reduction And Mouth Opening Over Arthrocentesis In 30, 6 Weeks Interval Respectively.

Reem Ahmed Hany, Shaymaa I. Habib And Gihan Ali Abdelrahman,

ABSTRACT





Purpose: The Aim Of This Study Was To Evaluate The Antifungal Effect Of Immersed Acrylic Resin Material In Aqueous Extract Of Siwak Solution On Candida Albicans In Comparison To Distilled Water As A Negative Control Or Sodium Hypochlorite As A Positive Control.

Materials And

Methods: One Commercially Available Heat Cured Acrylic Resin; Aqueous Extract Of Siwak And 0.5% Sodium Hypochlorite Were Used In This Study. For Antifungal Evaluation, The Assessment Was Done By Two Techniques; Agar Diffusion Method And Agar Dilution Method. Twenty Seven Specimens (n=9/gp) Were Prepared Using Split Teflon Mold (4�4 Mm) For Each Test. The Specimens Were Randomly Assigned Into Three Groups According To The Type Of The Immersion Solution. Group (I) Aqueous Extract Of Siwak Solution, Group (II) Distilled Water And Group (III) 0.5% Sodium Hypochlorite. The Results Were Statistically Analyzed.



Results: Regarding The Agar Diffusion Method, A Statistically Significant Difference Was Found Between The Antifungal Activities Of The Three Groups. The Highest Mean Antifungal Activity Was Recorded For Group I, Followed By Group III. While The Least Mean Value Was Recorded For Group II. Regarding The Agar Dilution Method In Both Concentrations (1/100 And 1/10), There Was A Statistically Significant Difference Between The Three Investigated Groups. The Highest Candida Count In Colony Forming Units (CFU) Was Recorded For Group II. Meanwhile, The Least Candida Count Was Recorded For Group I. While There Was No Significant Difference Between Group III And Group I.



Conclusions: 1) The Aqueous Extract Of Siwak As A Denture Immersion Solution Has A Potent Antifungal Activity On Candida Albicans. 2) The Aqueous Extract Of Siwak Can Be Safely Applied In Everyday Practice For The Acrylic Dentures Disinfection.

Islam M. Heiba , Marwa E. Sabet And Ahmed M. Osama,

ABSTRACT


Purpose: The Purpose Of This Study Was To Evaluate Which Treatment Modality Is Better Regarding The Amount Of Forces Transmitted To The Implant And Posterior Side Of The Ridge During Vertical And Oblique Loading Either Making:-Biohpp Bar-retained Implant-supported Overdenture Or -Biohpp Implant-retained Fixed Bridge.

Materials and Methods: Two Experimental Mandibular Prosthesis Supported By Dental Implants Were Constructed For This Study On Acrylic Model. The First Design Consisted Of Mandibular Overdentures Supported By CAD CAM BioHPP Milled Interconnecting Bar With Resilient Bar/clip Attachment. The Second Design Consisted Of BioHPP Implant Supported Fixed Bridge. The Implant Bridge Was Milled Using CAD CAM Technology In Cut Pack Design Framework And Was Veneered With Special Material. Acrylic Experimental Mandibular Model With Four Implants Was Used For This Study. This Model Replicates The Anatomic Features Of The Lower Edentulous Jaw And The Mucosa Covering The Ridge. Four Channel Strain Meter Was Used To Asses And Record The Strains Induced To The Distal Abutments And Residual Ridge. The Two Experimental Designs Were Submitted To Unilateral Vertical And Oblique Load; Then Evaluated For Stress Analysis Using Strain Guage Analysis. ANOVA And Student T-test Were Used To Analyze The Data.

Results: One-Way ANOVA Revealed That There Was A Significant Difference In Strain Values Between Unilateral Vertical And Oblique Load Applications. The Greatest Strain Values Were Recorded At Loading Side Of Implants During Unilateral Load Application, While The Lowest Values Were Recorded At The Non Loading Side. Conclusion: Selection Of The Design Whether Bar Attachment Or Fixed Bridge Depends Upon The Health Remaining Residual Ridge As: Fixed Bridge Decrease The Load On The Loaded Ridge And Increase The Stress On The Loaded Implants While Bar Attachment Decrease The Load On The Loaded Implants And This Was On Favor To The Health Of The Ridge.

Nada A. Al-Morshedy, Eman A. Shakal, Ibrahim R. El-Torky And Lobna A. El-Gamma,

ABSTRACT
Objective: The Objective Of This Study Was To Compare The Platform- Switched And Non-platform Switched Implants For Complete Implant Assisted Mandibular Overdenture In Controlled Type II Diabetic Patients Clinically And Radiographically.

Materials and Methods: Ten Controlled Type II Diabetic Male Patients Were Selected For This Study. Split Mouth Study Design Was Used In This Study Where, Group I Represented The Right Side Of The Patients? Mandibular Interforamenal Region Restored With Platform-switched Implant And Group II Represented The Left Side Of The Patients? Mandibular Interforamenal Region Restored With Non-platform Implants. The Patients Received Complete Mandibular Assisted Overdenture With O-ring Attachment. Clinical And Radiographic Evaluations Were Carried Out For Every Patient At Regular Recall Visits At The Time Of Insertion, 6, 12 And 18 Months. At The End Of The Study, All Implants Of Both Groups Were Successfully Osseointegrated. The Data Of This Study Were Collected, Tabulated And Statistically Analyzed By IBM-SPSS Statistics Software (Independent T-test Samples). There Were Insignificant Differences Between Both Groups Regarding Plaque Index, Bleeding Index, Pocket Depth And Stability Of The Implants. Radiographically, There Were Significant Differences In The Mandibular Bone Density At The Bone Implant Interface And Marginal Bone Loss Between Both Groups. Group I Implants Represented Less Marginal Bone Loss And Higher Bone Density Than Group II Implants. Conclusion: Platform-Switched Dental Implant Is The Implant Of Choice Particularly In Controlled Type II Diabetic Patients To Control Marginal Bone Loss Around Implants.

Hanan Omar Abo-Alrejal, Hoda Abdel Kader And Omniya Abu El-Dahab,

ABSTRACT


Aim: To Evaluate The Accuracy Of Cone-beam Computed Tomography Versus Photostimulated Phosphor Plate In Detection Of Dental Root Fractures. Methods: Sixty-six Extracted Human Mandibular (28 Anterior And 38 Posterior) Teeth Were Included In This Study. Teeth Were Divided Into Two Groups: First Group (33 Teeth): The Control Group (non-fractured Teeth) And The Second Group (33 Teeth): The Induced Fracture Group. The Second Group Was Divided Into 3 Equal Subgroups Each Of Which Had 11 Teeth With Induced Horizontal, Vertical And Oblique Root Fractures Respectively. After Induction Of RFs, The Fractured And Non-fractured Teeth Were Coded By Numbers From 1 To 66 Using Black Pen And Then All The Teeth Were Recorded According To The Presence Or Absence Of Fracture And The Type Of The Fracture. Inlay Wax Was Then Added Around The Roots Of All Teeth Within The Sockets Of The Dry Human Mandibles. All Teeth Were Then Radiographed Using Two Techniques: Digital Radiographs Were Taken Using Digora Optime ) Soredex, Tuusula, Finland) Size 2 PSP Plate And A Standard Dental X-ray Unit And CBCT Images Were Taken Using Planmeca CBCT Unit.

Results: The Sensitivity Of The CBCT Regarding The Detection Of Fracture Lines (75.27%) Was Greater Than That For The PSP Plate (68.81%). The Specificity Of The CBCT (91.39%) Was Greater Than That For The PSP Plate (specificity =73.11%). Conclusion: CBCT Images Have Higher Sensitivity And Specificity In Detecting The Different Types Of RFs Vertical, Horizontal Or Oblique Root Fractures Compared To PSP Plate. CBCT Are More Accurate Than PSP Plate In Detection Of Vertical, Horizontal And Oblique Root Fractures.

Ahmed A. Youssif , Magdy M. Ali , Yasser F. Hussien And Mohammed M. Katia,

ABSTRACT
Objective: The Purpose Of This Study Was To Evaluate The Effect Of Herbal Irrigation (Green Tea Extract And Garlic Extract) On Micro Hardness Of Root Canal Dentin.

Materials and Methods: Twenty Human Single Rooted Mandibular Premolars Were Decoronated, The Root Length Was Determined. Instrumentation Was Done Using Revo S Rotary Files, Samples Were Divided Into Four Groups; Two Experimental Groups Of 7n Each (n = 7) And Two Control Groups (positive And Negative) Of 3 In Each (n = 3) According To The Irrigants Used During And After Instrumentation. Group I: Green Tea Extract, Group II: Garlic Extract, Group III: Sodium Hypochlorite 5.25% And EDTA 17% (positive Control), Group IV: Distilled Water (negative Control). The Roots Were Split Longitudinally And Prepared To Measure Dentin Microhardness. Quantitative Data Presented By Mean And SD,�Friedman Test, Mannwhiteny Test And Kruskal Wall Is Test Were Used.

Results: The Highest Microhardness Values Were Recorded For Distilled Water Followed By Green Tea And Garlic Extracts Respectively And The Lowest Values Were Given By Sodium Hypochlorite With EDTA. There Was Statistically Non-significant Difference Between Garlic Extract And Sodium Hypochlorite With EDTA On Microhardness Of The Root Canal.

Conclusions: It Was Concluded That The Use Of Herbal Extracts As Irrigant Regimen Will Not Hamper The Root Dentin Microhardness When Compared With Conventional Irrigations Regimens.

Yasmin Farouk, Amina Mohamed Hamdy And Ahmed Ezzat Sabet,

ABSTRACT


Purpose: This Study Evaluated The Influence Of Different Surface Conditioners On The Push-out Bond Strength Between A Glass Fiber Post Surface And Self-adhesive Resin Cement. Methods: Twenty-one Sound, Single Rooted Canines Were Selected And Were Endodontically Treated Using Protaper Rotary System And Post Space Preparation Was Performed. Twenty-one Glass Fiber Posts (Glassix-Plus, Nordin) Were Divided Into Three Groups According To Different Surface Treatments Subjected To Glass Fiber Posts: Group 1: No Treatment And Silane Application Only (G1); Group 2: Immersion In 95% Ethyl Alcohol For 10 Minutes Followed By Silane Application (G2); Group 3: Immersion In 20% H2O2 For 10 Minutes Followed By Silane Application (G3). Self-adhesive Resin Cement (G-Cem) Was Used For Cementation Of The Glass Fiber Posts To The Root Canal Dentin. Two Slices ( Coronal And Middle Sections) Of 2 Mm Thick Were Sectioned From Each Root Using ISOMET Machine. A Universal Testing Machine Was Used With A Cross-head Speed Of 1 Mm/minute For Performing The Push Out Bond Strength Tests. Two-way ANOVA And Tukey Post Hoc Tests Were Used For Analyzing Data (�=0.05). The Effect Of Different Root Section Location On The Push-out Bond Strength Of Self-adhesive Resin Cement Was Also Evaluated. Failure Mode Of Root Sections Were Then Examined Under Stereomicroscope (50X Magnification) After Dislodgment Of Fiber Posts.

Results: ANOVA Indicated Significant Differences Among Surface Treatments (p<0.05). Regarding The Effect Of Post Surface Treatment Regardless Of Other Variables, The Results Revealed That Both Groups G3 And G2 Had A Significant Higher Bond Strength Values Than Group G1 , While There Is No Significant Statistical Difference Between Groups G2 And G3 . Group G1 Had Lowest Bond Strength Values Among Other Groups (p<0.05). Regarding The Effect Of Root Section Location Regardless Of Other Variables, The Results Revealed That Middle Third Root Section Showed A Significant Higher Bond Strength Values Than Coronal Third Root Section. SEM Analysis Showed Mixed And Adhesive Types Of Failure In All Groups. Hypothesis: The Use Of Different Surface Treatment Could Improve The Chemical-mechanical Interaction Between Fiber Posts And Resin Cements, Thus Improving The Performance Of Clinical Application Of These Materials In Endodontic Treated Teeth. Clinical Significance: Within The Parameters Of This Study, The Bonding Capability Of Self-adhesive Resin Cements To Glass Fiber Posts Were Affected By Different Post Surface Pre-treatments. Post Surfaces Treated With 20% H2O2or 95% Ethyl Alcohol Showed Significantly Stronger Bond Interactions To Self-adhesive Resin Cement Than Those Only Treated With Silane Application.