Nada Ashraf Ali Elmeligy, Amr Ezzat And Hany Saber,

ABSTRACT


Aim: The Study Was Conducted To Explore The Relationship Between The Children?s Age And Gender And Their Preoperative Fear Level As Measured By The Children?s Fear Survey Schedule-Dental Subscale (CFSS-DS), Their Behavior During Treatment As Measured By The Modified Venham Scale And Their Postoperative Fear Level As Measured By The Children?s Fear Survey Schedule-Dental Subscale (CFSS-DS) In The First Dental Visit. Methods: This Study Was Conducted On 46 Children Aged Between 5 And 7 Years. Questionnaires Used Were The Children?s Fear Survey Schedule-Dental Subscale (CFSS-DS) And The Modified Venham Scale. Behavior Was Registered On A Video Recorder And Scored By Independent Observers Using The Modified Venham Scale. Treatment Consisted Of Pulpotomy Followed By Zinc Oxide And Eugenol Dressing.

Results: An Insignificant Correlation Was Found Between Each Of Age And Gender And Each Of The Preoperative Fear Score, The Intraoperative Behavior And The Postoperative Fear Score. Conclusion: Age And Gender Have No Effect On Preoperative Or Postoperative Fear Scores Or On Behavior During Treatment.

Omneya M. Elkadi, Gihane Gharib Madkour, Hala Salem Elmenoufy And Mahmoud El Refai,

ABSTRACT
Background: There Is Little Number Of Studies That Address The Inter-relationship Of Gestational Diabetes Mellitus (GDM) And Periodontitis During Pregnancy. Hence, This Study Was Conducted To Provide Further Evidence In The Possible Association Between Chronic Periodontitis And GDM By Evaluating The Level Of Tumor Necrosis Factor-alpha (TNF-�) Of Chronic Periodontitis Patients With GDM After Phase I Periodontal Therapy. Subjects And Methods: This Study Was Conducted On 40 Subjects Divided Into 2 Groups: 20 Pregnant Females Suffering From Gestational Diabetes Mellitus Associated With Moderate To Severe Chronic Periodontitis And 20 Systemically Free Pregnant Females Suffering From Moderate To Severe Chronic Periodontitis. The Periodontal Status Of The Subjects Was Assessed At Baseline Before Phase I Periodontal Therapy And 2 Months After Completion Of The Treatment: All Subjects Have Been Screened By Comprehensive Periodontal Examination And Full Periodontal Charts Were Obtained. The Following Clinical Parameters Were Assessed To Determine The Clinical Periodontal Status Of Patients: Plaque Index (PI), Gingival Index (GI), Probing Pocket Depth (PPD), And Clinical Attachment Level (CAL). Gingival Crevicular Fluid (GCF) And Serum Samples Were Collected From Both Study Groups To Detect TNF-� Levels. Regarding The Assessment Of TNF-�, Real-time Reverse-transcriptase Polymerase Chain Reaction (RT) PCR Technique Was Used.

Results: Results Of The Present Study Observed Statistically Significant Reduction In TNF-� Levels After 2 Months From Phase I Periodontal Therapy. The Current Study Showed That, There Was A Statistically Significant Positive (direct) Correlation Between TNF-� Level, PI, GI, PPD And CAL Measurement At Baseline And After 2 Months From Phase I Periodontal Therapy. Conclusion: It Is Shown That The Levels Of TNF-� In GCF And Serum Before Treatment Were Higher In GDM Group (group 1) Than In The Control Group. Thus, The Examination Of TNF-� May Enhance The Understanding Of Pathogenesis Of Periodontitis And GDM And Its Assessment In The Treatment Process May Result In Better Control Of The Disease.

Amr Taha, Ahmed M. Abd Alsamad, Hany Mahmoud Omar And Mushira M. Dahaba,

ABSTRACT

Objectives: Assessment Of The Accuracy Of Linear Measurements In Maxilla Obtained By CBCT Scanner (Planmeca Promax 3D MID CBCT Machine And Software) In Comparison With The Real Measurement Obtained From The Dry Skulls Methods: - The Study Was Performed On Thirty (30) Dry Skulls Obtained From The Anatomy Department Of Faculty Of Medicine, Cairo University. The Skulls Attached To Their Mandibles Were Radiographed Using Planmeca ProMax 3D Mid CBCT Machine. Real Measurements Were Performed Using A Digital Caliper. The Results Obtained Was Subjected To Intra- And Inter-observer Agreement Was Assessed Using Intra-Class Correlation Coefficient (ICC).Bland-Altman Plot (differences-vs-means Plot) Used To Show The Agreement Between Two Quantitative Measurements By Studying The Mean Difference And Constructing Limits Of Agreement .

Results: Excellent Correlation Was Shown Between The Maxillary CBCT Linear Measurements And Real Measurement Obtained From Dry Skulls. There Was Excellent Inter And Inter Observer Reliability. Conclusion:-Maxillary Linear Measurements Driven From CBCT Images Of Planameca Promax 3D Mid? Machine Are Accurate, Reproducible And Reliable For All Maxillofacial Applications.

Nada M. Salem, Mohamed A. F. Kaddah, Mona M. Salah Fayed And Fady Hussein Fahim,

ABSTRACT
Aim Of The Study: To Compare The Two Used Methods Of Indirect Bonding Regarding (Vinyl Polysiloxane VPS Tray And A Soft Vacuum-formed Tray) The Patient?s Satisfaction During The Bonding Procedure.

Materials and Methods: A Randomized Controlled Trial Was Performed, 21 Subject With Fully Erupted Upper And Lower First And Second Permanent Molars Showing No Signs Of Enamel Defects Or Signs Of Gingival Inflammation Were Recruited In This Study. 168 Attachments Were Bonded To First And Second Molar Teeth. A Questionnaire Was Given To Each Subject To Measure Their Satisfaction Towards The Used Indirect Bonding Trays. After Placement Of Molar Tubes On The Working Model, A Vinyl Polysiloxane VPS Tray And A Soft Vacuum-formed Tray Were Fabricated, One On Each Half Of The Working Model, Then The Tubes Were Transferred To The Patient?s Dentition. Conclusion: The Vinyl Polysiloxane (VPS) And The Vacuum-formed Trays Used To Indirectly Bond Orthodontic Attachments Were Found To Be Equally Satisfying To The Patient.

Marwa Hassan Mostafa ,, Ali Abdulghani AlSourori, Amal Fathy Kaddah, Magda Ismail Ramzy, Ahmed Emad Fayyad And Wessam M Dehis,

ABSTRACT


Purpose: The Aim Of This Study Was To Evaluate Implant Stability In Single Implant Versus Two Implant Mandibular Over-denture Of Completely Edentulous Patients.

Materials and Methods: Twenty Four Completely Edentulous Patients Were Divided Randomly Into Two Groups, Intervention Group Received Single Implant Supported Overdenture, While The Conventional Group Received Two Implant Supported Over Denture. Osstell Device Was Used To Measure Implant Stability. Implant Stability Was Measured Equally For The Two Groups. At First Primary Stability Was Measured At Time Of Implant Insertion After That Secondary Implant Stability Was Measured Every Three Months Up To Nine Month

Results: Comparing The Two Groups During The Whole Study Period, The Results Demonstrated That No Differences In Implant Stability Between Two Groups. (P Value < 0.05) Conclusion Regarding Initial And Delayed Implant Stability, Minor Changes Were Observed Between The Two Groups During The Whole Follow Up Periods. Implant Stability Of Single Implant Supported Over Denture Is Closer To Two Implant Supported Over Denture.

Salah El-Din M. Harraz , Nader N. Elbokle And Mohammed M. Khashaba,

ABSTRACT


Purpose: This Preliminary Study Was To Evaluate Clinically And Radiographically The Volume Changes Of Alveolar Bone Grafting Guided By Resorb-x Membrane. Patients And Methods: A Total Of Six Patients With Maxillary Anterior Localized Alveolar Ridge Defects � 3 Mm Were Selected. The Alveolar Ridges Were Reconstructed With Xenogeneic Bone Graft Particles Guided By Resorb-x Membrane. Linear Measurements And Volume Analysis Of The Changes In Alveolar Ridge Were Obtained Pre-operatively And Four Months Post-operative Using Cone Beam Computed Tomography (CBCT).

Results: Four Months Postoperatively, All Treated Defect Sites Exhibited Satisfactory Bone Formation. Clinical Results Showed Absence Of Any Foreign-body Reactions To Biodegradation Of Resorb-x Membrane And SonicPin Rx?. Measurements Made On CBCT, Four Months Postoperative Showed Statistically Significant Increase In Bone Width With Mean � SD: 2.37 � 1.77 Mm At 2 Mm, 2.46 � 1.56 Mm At 4 Mm, 2.36 � 1.05 Mm And 1.63 � 0.83 Mm At 8 Mm From Crest Of Alveolar Ridge Respectively. There Was Statistically Significant Increase In Bone Volume By 36.15% In The Area Of Newly Formed Bone. No Statistical Significant Changes Was Found In The Density Of Newly Formed Bone When Compared To The Density Of The Native Bone Four Months Post-operatively. Conclusion: The Resorb-x Membrane Is An Improvement In The Search For A Mechanically Strong And Stiff As Well As A Biodegradable System. With Such Modifications In Properties, This Gives Resorb-x Membrane More Promising Chances To Be Used In Guided Bone Regeneration.

Mona E. Shabana, Salma H. Al-Ashry And Ahmed M. Ghobashy,

ABSTRACT
Objective: The Aim Of The Current Study Was To Compare Between Rotation Motion (ProTaper Universal And ProTaper Gold) And Reciprocation Motion (WaveOne And WaveOne Gold) In Shaping Ability Of Curved Root Canal By Assessment Of Canal Transportation, Centering Ability And Remaining Dentin Thickness And Changes In Canal Curvature Using CBCT Methods: Forty Extracted Human Mandibular First Molars With Mesiobuccal Canal Curvature Ranged 20-35 Degrees Were Used In The Study. Decoronation Of The Teeth At 15 Mm Length Each Tooth Was Radiographed From The Buccal View With #15 K-file Inside The Mesio-buccal Canal Adjusted To The Apical Foramen Using Vista Scan Digital X-ray Machine And Schneider Angle Was Measured. Teeth Will Be Classified Into Two Main Groups Group I With 20 Teeth For Rotation Motion And Group II For Reciprocation Motion. Each Group Will Be Further Subdivided Into Two Subgroups According To The Type Of File System .Sub Group A For Universal System And Group B For New System. Group I: Ten Teeth Were Shaped Using PU For Subgroup A And Another Ten Teeth Were Shaped Using PTG For Subgroup B According To The Manufacture Instructions And Ending Up To File F2. Group II Subgroup A And Subgroup B Ten Teeth Were Shaped Using Primary WO 25/.07 With X Smart Plus Motor In Subgroup A, Another Ten Teeth Were Shaped Using Primary WOG 25/.08 With X Smart Plus Motor With Wave One Gold Setting In Subgroup B. Both Systems Were Used According To Manufacturer Instruction. Using Cone Beam Computed Tomography With Fused Image, Subtracting The Un-instrumented Dentin From The Instrumented Canal Using On Demand3D Software, Axial Cuts Were Carried Out At 3mm, 5mm And 7mm In The Root. Assessment Of Degree And Direction Of Transportation, Centring Ability And Change In Canal Curvature Was Done Using CBCT. Data Were Collected, Tabulated And Statistically Analyzed In Tables And Figures. Friedman?s Test Was Used To Compare Between The Different Levels Within Each System. Dunn?s Test Was Used For Pair-wise Comparisons When Friedman?s Test Is Significant.

Results: In BL Direction, At 5 Mm Root Level, ProTaper Gold Showed The Statistically Significantly Highest Mean Centering Ratio, While ProTaper Universal Showed The Statistically Significantly Lowest Mean Centering Ratio. There Was No Statistically Significant Difference Between The Four Systems Regarding Change In Canal Curvature Conclusion: The Two Motions Were Comparable As Regards To The Amount Of Dentin Removal, Except At 7 Mm, Reciprocation Revealed Lower Mean Value.As Regards Transportation Direction, The Four Systems Had A Tendency Toward Transportation To The Mesial Direction.Reciprocation Motion Exhibited Superior Performance Compared With The Rotation Motion In Transportation At 7 Mm The Four Different File Systems Straightened Root Canal Curvature Similarly.

Alaa Fathi Abdel-Salam, Mohamed Fouad Haridy And Mohamed Riad Farid,

ABSTRACT
This Study Was Conducted To Evaluate The Fracture Resistance Of Premolars Restored With Nanohybrid Composite Vs Bulk Fill RBC ?BFC ?. 40 Sound Premolars Were Divided Into Four Groups (n=10). Group 1: Sound Teeth ?positive Control?, Group 2: Prepared Teeth With MOD Cavity Preparations ?negative Control?, Group 3: Premolars With MOD Cavity Preparation Restored Incrementally With Nanohybrid RBC (Grandio?, VOCO, Germany). Group 4: Premolars With MOD Cavity Preparation Restored By Bulk Fill RBC (x-tra Fil?, VOCO, GERMANY). Load Was Applied On Specimens Using Universal Testing Machine With Crosshead Speed 1 Mm/minute Till Fracture. The Outcome Is The Load At Which The Specimen Was Fractured In Newton. Sound Teeth (1336.03�105.48) Showed Highest Fracture Resistance (N), Followed By Nanohybrid RBC (1053.8�114.99) And BFC (1028.72�94.68) With An Insignificant Difference Between Them; Followed By Negative Control (611.55�93.39) At �0.001.

Abdullah Ahmed Hassanien, Zainab Diaa El-Din Soliman, Farid Sabry El-Askary And Mokhtar Nagy Ibrahim,

ABSTRACT
Continuous Exposure Of Dental Hard Tissues And Resin Based Restorative Materials To Various Beverages And Tooth Brushing Might Lead To Deterioration Of Surface Properties Of Materials Which Might Complicate Their Repair Potentiality Especially In Non-carious Lesions. This In Vitro Study Aimed To Evaluate The Shear Bond Strength Of RMGIC-to- RMGIC And RMGIC-to-Enamel Submitted To PH-cycling And Mechanical Tooth-brushing. Three Hundred And Twenty Resin Modified Glass Ionomer (Fuji II LC) And Bovine Enamel Specimens Were Submitted To Dynamic PH-cycling In Coca-Cola Soft Drink, Milk And Orange Juice. Control Specimens Were Prepared And Left In Distilled Water Without Submission To PH-cycling Protocol Or Mechanical Tooth-brushing. The PH-cycling Was Done Over A Period Of 1 Month That Involved Immersion In Different Beverages For 5 Minutes, 3x/day And Specimens Were Kept In Artificial Saliva Between Cycles. Mechanical Tooth-brushing Was Performed To The Specimens After The First And Third PH Cycles Daily For 2 Minutes Each, Using Tooth-brushing Simulating Device. Specimens Were Divided According To Surface Treatments (diamond Bur Grinding, 10% Polyacrylic Acid, Grinding/10% Polyacrylic Acid And No-treatment) Into 4 Subgroups (n=10). Shear Bond Strength Test Was Performed After 24 Hours. The Surface Morphology Of Specimens Subjected To PH-cycling And Mechanical Tooth-brushing Was Analyzed Using Scanning Electron Microscope. Results Showed That With RMGIC, The Highest SBS Was Recorded With The Grinding/10%PAA Groups While The Lowest With The No-treatment Group. For The Enamel; Highest SBS Was With 10%PAA And The Lowest With Surface Grinding. Shear Bond Strength Of RMGIC-to-RMGIC Or RMGIC-to-enamel Is Influenced By The Different Surface Treatments Used.

Wesam Osama Hassan, Geraldine Mohamed Ahmed, Olfat Gamil Shaker And Shamiaa Ismail Gawdat,

ABSTRACT


Aim: The Aim Of This Prospective, Randomized, Single-blind, Clinical Trial Was To Evaluate The Effect Of Combination Of Calcium Hydroxide Paste With 2 % Chlorhexidine Gel As Intracanal Medication In Comparison With Calcium Hydroxide Paste Alone On Post-operative Pain At 4, 24, 48 Hours And 14 Days After The First Visit And Its Effect On Bacterial Endotoxins In Teeth With Necrotic Pulp. Methods: Forty Five Patients Aged 15-66 Years With Single Rooted Tooth With Necrotic Pulp Were Subjected To Conventional Root Canal Treatment In Two Visits. All Patients Were Divided By Randomization Into 3 Groups, Each Group Contained 15 Patients (n=15). Group A Was Subjected To Calcium Hydroxide Combined With 2% Chlorhexidine Gel For Two Weeks; Group B Was Subjected To Calcium Hydroxide Paste For Two Weeks, While Group C Was Subjected To No Intracanal Medication For Also Two Weeks. Post-operative Pain Was Assessed By Using Numerical Pain Rating Scale (NRS) At 4, 24, 48 Hours And 14 Days After The First Visit, While Endotoxin Assessment Was Performed By Limulus Amebocyte Lysate Test By Taking Samples From The Root Canal After Access Cavity Preparation (S1), After Chemo-mechanical Preparation (S2) Before The Application Of The Intracanal Medications And After 14 Days Before The Obturation (S3).

Results: There Was No Significant Difference Between The Three Groups Regarding The Main Demographic Data Including: Age, Gender And Tooth Type (p>0.05). ). Results Showed No Significant Difference Between The Three Groups Regarding Post-operative Pain Incidence After 4, 24, 48 Hours And 14 Days Postoperatively (p>0.05). Regarding Endotoxin, Results Showed That There Was Significant Difference Between The Three Groups At S1, S2 And S3 (p<0.05). Conclusion: The Application Of Calcium Hydroxide Combined With 2 % Chlorhexidine Gel, Calcium Hydroxide Or Without The Application Of Intracanal Medicaments Didn?t Seem To Affect On Postoperative Pain At 4, 24, 48 Hours And 14 Days, While Its Application Has An Effect On Endotoxin Concentration In Teeth With Necrotic Pulp.