Gehan El Desouky, Abd El Badee Abdallah, Hany Shalaby And Hassan El Sayed Mohammed,

ABSTRACT


Aim: Assess The Outcome Of PRF Clots And Beta Tricalcium Phosphate As Sinus Graft Materiel With Simultaneous Implant Placement. Patient And Methods: Sixteen Patients Were Included In The Study Divided Into Two Groups As The First Control Group Sinus Augmentation Was Done Using Beta-TCP Alone And The Second Study Group Using Beta-TCP And PRF. Result: Using Beta-TCP Mixed With PRF Show Better Bone Density And Better Stability After 6 Months. Conclusion: The Use Of Beta-TCP Mixed With PRF As A Graft Materiel In Sinus Lifting Procedure Is Highly Superior To Beta-TCP Alone With Respect To The Implant Stability And Bone Density Around The Implant.

Salamah Almasry, Hamdi Abo Alfotooh And Mostafa Helmy .,

ABSTRACT


Aim: Is To Compare The Stress Distribution Pattern In Two Different Attachment Systems Namely: Barclip. And Ballsocket. In Implant Supported Overdenture At Different Zones In Bone Surrounding Dental Implant With Application Of Force With Different Magnitudes And Directions Using 3D Finite Element Analysis. Material & Methods: 3d Model Of Two Edentulous Maxilla Restored With Implant Supported Overdenture Using Different Attachment Designs. Amount Of 50, 100 And 150 N Load In Deferent Directions (vertical And Oblique) Were Applied Through The Overdenture Simultaneously On Posterior Dentition By Aid Of Finite Element Analyses Software. Loads Were Directed Toward The Central Fossa. Stress Analysis Was Carried Out To Detect The Generated Stresses On Bone Surrounding Dental Implants.

Results: When Comparing Between Both Attachments, The Maximum Von Mises Stresses In Vertical Loads Of 50, 100, And 150 N And Both 50 N Oblique Loads. Ball Attachment Shows Lower Stress Levels At The Cancellous As Well As Cortical Bone Surrounding Dental Implants. Conclusion: The Maximum Von Mises Stresses In Both Models Among This Study Were Below The Critical Threshold Of Bone Resorption. The Region Which Displayed The Maximum Stress Concentration In The Both Models Was The Cortical Bone Surrounding The Loaded Implants. Barclip Attachment Recorded Higher Levels Of Von Mises Stresses Than Ballsocket In All Vertical And Oblique Loads.

Mostafa Mokhtar Anwar, Manal Mohamed Hosny; Engy Ahmed Mahmoud And Olfat Gamil Shaker,

ABSTRACT

Objectives: To Evaluate The Effect Of Systemic Administration Of Green Tea In Conjunction With Scaling And Root Planing Versus Scaling And Root Planning Alone On The GCF Total Oxidative Capacity And Clinical Parameters In Patients With Generalized Moderate Chronic Periodontitis. Methods: Twenty Eight Patients Participated In This Study And Were Randomly Allocated Into Two Groups: Group I (Test Group): Included 14 Patients (9 Females, 5 Males With Mean Age 40 Years) Received Scaling And Root Planing Then Patients Were Given Systemic Green Tea Tablets (300 Mg) To Be Taken Once Daily For 3 Months. Group II (Control Group): Included 14 Patients (7 Females, 7 Males With Mean Age 38 Years) Received The Same Treatment As In Group I Together With Systemic Placebo Tablets To Be Taken Once Daily For 3 Months. No Side Effects Were Reported After Green Tea Administration. The Clinical Parameters (PI, GI, PD And CAL) And TOC Were Recorded At Baseline And 3 Months After Treatment.

Results: Both Groups Showed Statistically Significant Improvement In All Clinical Parameters With No Difference Between Them. Test Group Showed More Statistically Significant Reduction In TOC Than The Control Group. Conclusion: Both The Test And Control Groups Exhibited Significant Improvement In Clinical Parameters And Significant Reduction In GCF Levels Of TOC 3 Months After Non- Surgical Periodontal Therapy. The Adjunctive Systemic Administration Of Green Tea Produced More Significant Reduction In GCF Levels Of TOC Compared To Control Group 3 Months After Non- Surgical Periodontal Therapy.

Amr Helmy Moustafa El Bolok, Safaa Marzouk Tohamy, Sherif Farouk Elgayar, Hanan Eid Gamal And Hiam Rifaat Hussien,

ABSTRACT
Background: Doxorubicin Is An Effective Cytotoxic Anticancer Agent And Has Been Used For The Treatment Of Variety Of Malignancies. The Aim Of The Current Study Is To Investigate The Effect Of Doxorubicin On Squamous Cell Carcinoma Cell Line (HEP-2) After 24 Hours. Material& Method: Treatment Of Cell Line (HEp-2) By Different Concentrations Of Doxorubicin Was Done To Assess The Viability Of The Treated Cells To Determine The Percentages Of Viable Cells That Was Monitored Using MTT Assay.

Results: The Mean Viability Percentage Of Doxorubicin Treated Cells (in Relation To Control Cells) Increased As Doxorubicin Concentration Decreased From 2000 MM To 1mM With An IC50 Of 9.5 MM. Regarding The Cytotoxic Effect Of Doxorubicin And Related Cell Cycle Profile It Was Noticed That Cell Distribution Showed A Variable Percent Of Arrest At Different Phase Of Cell Division Profile, Where There Was Non Significant Difference Of Arrested Cells Of Doxorubicin Pre And Post Treatment Compatred With Its Value In Non Treated G0-G1 Phase Control Cells(P>0.05) And S Phase As Well. While There Was A Significant Elevated Arrest Of Treated Cells During The G2-M Phase (P<0.05) And The Significant Difference Of Cell Arrest At G2-M Phase Was Type Of Treatment Related . Conclusion: From The Results Of The Current Study, We Found That Doxorubicin Has Cytotoxic Effect On Squamous Cell Carcinoma, (HEp-2) Cell Line, It Also Induced An Effect On The Cell Cycle Distribution, Persumtively Doxorubicin Has Effect On (HEp-2) Cell Line Resulting In Apoptosis And Necrosis.

Hady K. Abdelhalim, Kareem M. Gaber And Wael M.Refai .,

ABSTRACT
Objective: To Propose Of New Software For Converting 2D Facial Photographs Into 3D Digital Models And Determine The Accuracy And Precision Of 3D Face Models Through An Indirect Facial Anthropometric Technique.

Materials and Methods: Ten Standard Linear And Horizontal Craniofacial Measurements Were Obtained From 22 Subjects Using The Proposed Software Inaddition To Five Angular Measurements And These Were Compared With Direct Anthropometry Through Digital Caliper.

Results: Mean Measurements Derived From Three-dimensional (3D) Images And Direct Anthropologic Measurements Were Mostly Similar However, Statistically Significant Differences Regarding Linear And Horizontal Measurements Were Noted For Four Measurements (Al-Al, Ch-Ch, N-Sn And Sn-Sto) . Regarding Angular Measurements Only Nasolabial Revealed Statistically Significant Difference.

Conclusions: Overall, Soft Tissue Facial Measurements (angles And Distances) On 3d Face Model Generated From Proposed Software Demonstrated Moderate Agreement, Accuracy And Precision With Traditional Anthropometry .

Abdullah AbdelBaky AlAfifi , Asmaa Yassen And Olfat Hassanein,

ABSTRACT

Objectives: Microhardness Evaluation Of Initial Enamel Lesions By Bioactive Glass Air-abrasion Before NovaMin Application. Methods: 40 Extracted Human Molars Were Sectioned Mesiodistally And Were Embedded In Resin Molds. Specimens Were Assigned To 4 Groups According To The Remineralization Protocol: G1- (artificial Saliva), G2- (air-abrasion), G3- (NovaMin), G4- (air-abrasion + NovaMin). Specimens Were Immersed In A Daily Renewed Demineralizing Solution To Create Artificial White Spot Lesions. Specimens Were Stored In A Daily Renewed Artificial Saliva. Microhardness Was Assessed Using Vicker�s Hardness Number (VHN) At Starting Point, After Demineralization, After 24 Hours And One Month Remineralization.

Results: The Group Of Air-abrasion That Received NovaMin For One Month Showed The Highest Statistically Significant VHN, With No Statistically Significant Difference Between The VHN Values Of This Group After Remineralization And At Starting Point.

Conclusions: Air-abrasion Of Enamel With Bioactive Glass Did Not Play A Role To Improve Remineralization.

Nermien Ali Mohamed Fathy And Maha Eshak Amer .,

ABSTRACT
Objective: Evaluate The Radiographic Finding Of CBCTsialography In Chronic Inflammatory And Non-inflammatory Lesions Of Salivary Gland . Study Design: Twenty Patients Of Both Sexes And Varying Ages Were Selected Complaining Of Inflammatory And Non-inflammatory Salivary Gland Lesions Diagnosed By Patient History, Clinical Examination Were Undergone Conventional Sialography And CBCT Scanning. Then All Images Were Analyzed And Scored, The Radiographs Will Be Evaluated By Three Radiologists Independently Of Each Other .

Results: There Was Statistically Sagnificance Diffirence Between CBCT Finding And Plain Imaging With Respect To Visualization Of The Intraglandular Duct (p = 0.001) And Degree Of Sialectasia (p0.001). However, Plain Imaging And CBCT Were The Same For The Identification Of Strictures (p0.061) Conclusion: Cone Beam Computerized Tomography (CBCT) Sialography Is Superior To Conventional Sialography For Evaluation Of Chronic Inflammatory And Non-inflammatory Lesions Of Salivary.

Dalia Walid Mamdouh , Mahmoud Hamdy And Rania Abd Allah Nasr,

ABSTRACT
Objective: To Assess The Satisfaction Of Pediatric Patients And Their Caregiver, Taken From 3 Different Health Care Services Towards The Quality Of The Dental Care Services. Subjects And Methods: A Stratified Random Cross Sectional Observational Study Was Conducted At The Pediatric Dentistry Department At Faculty Of Oral And Dental Medicine Cairo University, Governmental Hospital And Medical Center At Ministry Of Health On 510 Patients (267 Girls And 243 Boys), Modified PSQIII (Patient Satisfaction Questionnaire III) Was Used To Collect The Data From The Caregivers.

Results: There Was No Association Between The Satisfaction Score And Sociodemographic Variables, There Were More Girls At Faculty Of Oral And Dental Medicine 100 Girls (58.8%) Compared To Medical Center 76 Girls (44.7%) And Governmental Hospital 91 Girls (53.5%), Pediatric Patients In Governmental Hospital With Mean Age( 7.7) Years Are Older Than Other 2 Groups, The Highest Satisfaction Score Was At The Faculty Of Oral And Dental Medicine With (Median Score=4) Conclusion: Pediatric Patients And Their Caregivers Were Satis?ed With The Mean Of Communication With The Dentist And Interpersonal Aspects, Time Spent With The Dentist And Technical Quality. Access, Availability, Waiting Time And Waiting Room Were Identified As Reasons For Dissatisfaction.

Noha A. Agina, Mahmoud H.Eid And Randa Y. Abd Al Gawad,

ABSTRACT

Objectives: The Aim Of This Study Is To Evaluate The Clinical Performance Of Self Priming Composite Used As Pits And Fissure Sealant Versus Conventional Composite In Erupted Mandibular First Permanent Molars.

Materials and Methods: A Total Of 38 Children (8-10 Years), At High Caries Risk Were Included In The Study (Split Mouth Technique), Group A, One Mandibular First Molar Received And Group B, The Other Mandibular First Molar Received. Evaluation Of Sealant Retention And Development Of Caries Was Performed At Baseline, 2, 4 And 6 Months Using Modified Simonsen�s Criteria.

Results: Both Groups Showed A Significantly Proportion Of Successful Cases. Group (B) Showed A Significantly Higher Proportion Of Successful Cases Than Group (A). Conclusion: By The End Of Follow Up, Clinpro Showed Better Performance Than Embrace Wetbond When Used As Pits And Fissure Sealant In First Permanent Molars.

Michel Karam Eissa Elias, Hebatallah Mohamed Maged El-Far And Shaimaa Ismail Gawdat,

ABSTRACT


Introduction: Postoperative Pain Has Been Thought To Vary According To The Instrumentation Kinematics. The Objective Of The Present Trial Was To Compare The Incidence Of Postoperative Pain And The Amount Of Analgesic Intake After Using Reciproc Or One Shape Nickel-titanium Systems For Root Canal Instrumentation. Subjects And Methods: Fifty-four Patients With Symptomatic Irreversible Pulpitis Were Assigned To 2 Groups According To The Root Canal Instrumentation Technique, Reciproc (VDW, Munich, Germany) Or One Shape (MicroMega, Besan�on Cedex, France). Treatment Was Completed In A Single Visit. At The End Of The Visit, Participants Were Asked To Rate The Intensity Of Postoperative Pain On The Numerical Rating Scale At 6, 12, 24, 48 And 72 Hours. Participants Were Also Given Ibuprofen 400 Mg To Be Taken In Case Of Intolerable Pain And Asked To Record The Number Of Analgesic Tablets Taken At These Time Points.

Results: No Statistically Significant Difference Was Found In Terms Of Incidence Of Postoperative Pain Nor The Analgesic Intake At The Assessed Time Points.

Conclusions: Instrumentation Kinematics Had No Impact On Intensity Of Postoperative Pain.

Shaima�a Ahmed Aly, Ahmed Gamal Ahmed Hassan, Emad Mohamed Tolba And Gehan Fekry Mohammed,

ABSTRACT
Objective: Long-term Success Of Dental Implants Depends On Implant Abutment Connection . This Prospective Study Aims To Assess Bone Level Changes Around Implants With Self Locking Conical Connection And Traditional Platform Implant Abutment Connection With Mandibular Telescopic Supported Overdenture.

Materials and Methods: Twelve Completely Edentulous Patients Were Selected From The Outpatient Clinic Of The Prosthodontics Department; Faculty Of Dentistry, Minia University. Two Root Form Implants Were Inserted In Canine Area Bilaterally In Each Patient One Is Self -locking Implant Abutment Connection While The Other Is Traditional Platform ,then Telescopic Overdenture Was Constructed Over The Two Implant. The Crestal Bone Level Was Evaluated At 3,6,9,and 12 Months.

Results: The Mean Bone Heights At Different Intervals Of Self-locking Implant Abutments Connection Were 0.12�0.13 , 0.36�0.13, 0.51�0.06, 0.70�0.22,and0.81�0.25 At Baseline Three, Six, Nine And Twelve Months Respectively , While With Traditional Platform Implant Abutment Connation The Mean Bone Height Were T0.36�0.15, 0.58�0.13, 0.73�0.21, 0.82�0.15, And 0.98�0.18 At Baseline Three, Six, Nine And Twelve Months Respectively. Conclusion: Self Locking Conical Connection Implant Abutment Connection May Lead To Lower Rate Of Bone Resorption Rather The Dental Implants In Implant Supported Overdenture.

Gehan Fekry Mohammed, Amr Mohamed Ismail Badr And Moataz Alhosainy Hassan .,

ABSTRACT
Nowadays Mini-implant Overdenture Is Widely Used As A Substitution For The Conventional Two-implant Overdenture. The Thermoplastic Denture Bases Are Excellent Alternatives To Conventionally Used Acrylic Denture Bases, Therefore, The Purpose Of The Article Is To Evaluate Clinically The Patient Satisfaction, The Pocket Depth And Gingival Index Of The Supporting Structures Around Mini Implant Retained Over Denture Utilizing Three Different Denture Base Materials. Subjects And Methods: Twenty-four Healthy Completely Edentulous Male Patients Were Selected From The Outpatient Clinic, Patients Were Divided Randomly Into Three Equal Groups (eight Patients Each) According To The Denture Base Material: Group I: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Conventional Acrylic Denture Base. Group II: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Hard Thermoplastic Denture Base Polyan IC (PMMA) Group III: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Semi Flexible Thermoplastic Denture Base (bre Flex 2nd Edition). The Clinical Evaluation Was Measured In From Of Pocket Depth, Gingival Index And Patient Satisfaction After Immediate Loading Of The Dentures (baseline), 3, 6 And 12 Months.

Results: No Implant Failure Was Detected. The Mini Implants Were Assessed Clinically Throughout The Study Period By Observing The Absence Of Any Signs Of Inflammation Or Infection. The Pocket Depth And Gingival Index Values Were Significantly Higher In The Group Of Semi Flexible Thermoplastic Denture Bases While Patient Satisfaction Values Were Better In The Acrylic Group. Conclusion: Under The Limitations Of This Study, We Can Conclude That The Conventional Acrylic And Hard Thermoplastic Resins Are Better To Some Extent Than Semi Flexible Thermoplastic Resins Regarding The Peri-implant Gingival Measurements And Patient Satisfaction.

Ayman H. Amin, Gehan Fikry , Fardos N. Rizk And Amr B. Ismail .,

ABSTRACT
Objective: This Study Was Conducted To Measure The Difference Between Chrome Cobalt Telescopic Crowns And Poly Ether Ketone (PEEK) Telescopic Crowns Retaining Implant Retained Partial Overdenture Regarding Implant Stability, Crestal Bone Height Changes And Periodontal Pocket Depths

Materials and Methods: This Study Was Made On Fourteen Lower Kennedy Class I Partially Edendulous Patients. All Patients Received Posterior Implant In The Second Molar Area In Each Side. The Patients Were Divided Into 2 Groups, The First Group Received Chrome Cobalt Telescopic Crown And The Second Group Received Poly Ether Ketone Telescopic Crowns Over The Implants. Partial Overdenture Was Constructed For All The Patients In The Two Groups. Patients Were Followed Up Clinically To Measure Crestal Bone Height Changes Using Cone Beam Ct, Implant Stability Test Using Osstell And Periodontal Pocket Depths.

Results: Both Groups Showed Increase In Implant Stability, Periodontal Pocket Depths And Decrease In Crestal Bone Height, However The Difference Between The Two Groups Were Non-significant Except In The Periodontal Pocket Depth, The Chrome Cobalt Group Showed Increased Pocket Depths Than The PEEK Group.

Conclusions: From The Results Of This Study The Following Conclusions Could Be Obtained. There Was Almost No Difference In Crestal Bone Height Resorption Between The CrCo And The PEEK Telescopic Crowns, The Difference Between Implant Stability In Both Groups Were Non-significant, At The End Of The Follow Up Period, The PEEK Telescopic Crown Group Showed Lesser Periodontal Pocket Depths Than The CrCo Group Which Suggests That The PEEK Is More Biocompatible Than The Metallic Crowns.

Mostafa Elsayed Abdel Haleem F, Ahmed Gamal Ahmed Hassan, Emad M T Agamy And Gehan Fekry Mohammed .,

ABSTRACT
Statement Of Problem: Acetal Resin Has Been Introduced As An Esthetic Partial Denture Clasp And Framework Material. However, The Effects Of This Material On The Abutment Teeth Supporting Structures Were Not Clear.

Purpose: To Evaluate The Effects Of Acetal Resin Frame Work And Clasps On The Abutment Teeth Supporting Structures As Compared To Cobalt-chromium Frame Works And Clasps.

Materials and Methods: Fourteen Patients, 6 Males And 8 Females, With Kennedy Class I Partially Edentulous Maxilla And Dentulous Mandibles Were Selected For This Study. Patients Were Divided Randomly Into Two Equal Groups; Group 1 Received Maxillary Partial Denture With Acetal Resin Frameworks And Acetal Resin Clasps . Group 2 Received Maxillary Cobalt-chromium Partial Denture Frameworks With Cobalt-chromium Clasps. Bone Height And Density Of The Abutment Teeth Were Evaluated At Partial Denture Insertion And After 6 And 12 Months. Paired T-test Was Used At P < 0.05 To Assess The Changes In The Above Mentioned Parameters In Each Group. Student T-test Was Used To Compare Between The Two Groups.

Results: There Were Significantly Higher Reductions In Bone Height And In Bone Density In The Second Group Than That In The First Group. Conclusion: Acetal Resin Frameworks And Clasps Were Superior To Cobalt-chromium One Regarding Bone Resorption And Bone Density Around The Abutment Teeth. Clinical Implications: Based On The Changes Of The Studied Parameters ; Acetal Resin Clasp Abutments, It Could Be Used Successfully To Retain Partial Dentures.

Mohamed Medhat AL-Sobahy, Dina Mohamed EL-Beshlawy And Hany Mahmoud Omar .,

ABSTRACT
Objective: The Aim Of The Present Study Was To Assess The Effect Of Using Three Different Voxel Sizes On The Accuracy Of Planmeca Promax 3D Mid CBCT Images In Detection Of Simulated External Root Resorption Defects In Mandibular Single Rooted Teeth.

Materials and Methods: Fifty Five Recently Extracted Human Mandibular Incisor Teeth Were Collected And Disinfected, Five Hundred Defects Were Prepared On Their Different Root Surfaces Simulating External Root Resorption Lesions, The Teeth Were Positioned Inside The Sockets Of A Dry Mandible And Were Imaged By The Planmeca Promax 3D Mid CBCT Scanner Using 0.4, 0.2 And 0.15 Voxel Sizes, The Images Were Evaluated Independently By Two Radiologists.

Results: The Results Of Both Observers Showed That CBCT High Resolution Protocol Has Higher Sensitivity And Accuracy Than Normal And Low Resolution Protocol, Moreover, The CBCT Low Resolution Protocol Showed The Least Sensitivity And Accuracy Among All Protocols. Additionally, According To Both Observers, There Was A High Statistically Significance Difference In The Detectability Of All Simulated Defects Using CBCT Low Resolution Protocol (voxel Size 0.4) And Both Normal (voxel Size 0.2) And High (voxel Size 0.15) Resolution Protocols (P <0.001 HS), While There Was No Statistical Significance Difference In Detectability Of The Defects Using CBCT Normal And High Resolution Protocols (P > 0.05 NS). Conclusion: Considering The Studied CBCT Scanner, The Normal And High Resolution Protocols (voxel Sizes 0.2 And 0.15 Respectively) Showed A Similar High Efficacy In Detection Of Simulated External Root Resorption Defects In Mandibular Single Rooted Teeth And Their Usefulness Was Superior To That Of The Low Resolution Protocol (voxel Size 0.4). However, According To The ALARA Principle, The Normal Resolution Protocol Should Be The Scan Of Choice As It Delivers Less Radiation Exposure To The Patient.

Ahmed Kamel Abd El Nasser , Nagwa Mohamed Ali Khattab And Ehab Saeed Abd Elhamid .,

ABSTRACT


Introduction: Regenerative Endodontic Treatment On Immature Teeth With Apical Periodontitis Is Rapidly Becoming An Accepted Treatment Alternative To Conventional Apexfication. Aim This Study Was Designed To Evaluate And Compare The Clinical And Radiographic Findings Of A Regenerative Procedure Using Platelet-rich ?brin (PRF) And Blood Clot In Immature Necrotic Permanent Teeth 12 Months After The Procedure Subjects &Methods: 30 Teeth Were Divided Into Two Groups 15 Participants In Each ,control Group Treated With A Standardized Revascularization Treatment Protocol Using Blood Clot As Scaffold And Study Group Used PRF As Scaffold And Monitored For Clinical And Radiographic Changes For 12 Month. Standardized Radiographs Were Collected At Regular Intervals, And Radiographic Changes Were Quantified.

Results: All Treated Teeth Showed A Statistically Significant Increase In Radiographic Root Thickness It Was 0.88ml In The Study Group Compared To 0.67ml In The Control Group With (p Value= 0.001)also There Was An Increase In The Mean Root Length Of The Treated Teeth Both Study Group And Control Group,(1.25 Ml In The Study Group Versus 0.98ml In The Control Group, P= 0.001).the Success Rate In Clinical Evaluation Criteria Post Intervention Was High With No Significant Difference Between The Study Versus The Control Group 86.7% (n=13) Of Study Groups To 80% (n=12) In The Control Group) Conclusion: Blood Clot And PRP Showed Comparative Results In Terms Of Periapical Healing, Dentinal Wall Thickening, Root Lengthening And Apical Closure

Rehab S. El-Ghazzawi, Ghada A. El-Baz, Sahar Z. El-Azab And Tarek M. Nabil,

ABSTRACT
A Mouth Wash Is A Chemotherapeutic Agent Used As An Effective Home Care Remedy To Improve Oral Hygiene And Prevent Dental Caries By Targeting The Cariogenic Bacteria. Aim : To Evaluate And Compare The Effect Of Three Mouth Washes Of Natural Aqueous Extracts Of Pomegranate, Green Tea And Rosemary On Salivary PH Changes (pH Meter), Plaque Accumulation ( Sillness And L�e Plaque Index) And Counts Of Salivary Streptococcus Mutans And Lactobaciili.

Materials and Methods: Mouthwashes Were Prepared From Aqueous Extracts Of Pomegranate, Green Tea And Rosemary . 40 Children, Aged From 4-6 Years And 12-15 Years, Were Asked To Use Mouthwashes For 4 Days .The Effect Of Mouthwashes Were Evaluated On PH Of Saliva, Plaque Accumulation Rate And The Count Of Salivary Streptococcus Mutans And Lactobacilli. The Collected Data Were Statistically Analyzed. Results; In Both Age Group, After Using Mouthwash, Green Tea Mouthwash Showed Statistically Significantly Lower Mean Value In Mean Plaque Index Score After Using Mouth Wash. Rosemary Mouthwash In Group A(aged From 4-6y) Showed The Highest Mean PH Score With Non-statistically Significant Difference From Green Tea Subgroup. The Three Herbal Mouthwashes Showed Their Significant Inhibitory Effect On Streptococcus Mutans And Lactobacilli In Both Age Groups. Conclusion: Pomegranate, Green Tea And Rosemary Mouthwashes Could Be An Appropriate And Safe Choice To Decrease Dental Caries In Children.

Ehab Magdy Shafik, Sherif Farouk El-gayar, Enas Alaa El-din Abd El-Aziz And Hanan Eid Gamal .,

ABSTRACT
Aim Of Study: To Evaluate The Anticancer Potential Of Propolis On Human Laryngeal Squamous Cell Carcinoma Cell Line (Hep-2).

Materials and Methods: Prepared (Hep-2) Cell Line Was Treated With Different Concentrations Of Propolis For 24 Hours. The Effect Of Propolis On Cell Line Was Investigated Using MTT Assay, Cytological Examination And Nuclear Morphometric Analysis. The Results Were Analyzed Statistically.

Results: MTT Assay Showed That The Mean Viability Percentage Of Propolis Treated Cells (in Relation To Control Cells) Decreased As Propolis Concentration Increased From 0.275mg To 280mg. Morphometric Analysis Showed A Decrease In Nuclear Area Factor (NAF) Which Is An Indicator Of Apoptosis As Concentrations Increased. The Results Were Statistically Significant. Conclusion Propolis Has A Significant Anticancer Effect On Hep-2 Cell Line.

Eslam Said Mohamed, Ragia Mohamed Mounir, Nadia Galal Mohamedand Maha Mohamed Sallam .,

ABSTRACT
Objective: To Evaluate The Effect Of Using Simvastatin On Bone Osseointegration Surrounding Dental Implants. Methodology: Twelve Implants That Were Inserted And Divied Into 2 Equal Groups, Each Group Contained Six Implants (simvastatin Group And Control Group). All Implants Were Done Using Delayed Submerged Implant Insertion Technique. Group One Received Simvastatin Powder As An Adjunctive; To Improve The Osseoientgration Of The Bone Surrounding The Dental Implants, While Group Two With No Adjunctive. All Patients Were Followed Up Clinically And Radiographically For Osseointegration Using Cone Beam CT Two Months, And Six Month Postoperatively.

Results: Simvastatin Group Showed Statistically Low Significant Increase In The Percentage Of Increase In The Mean Bone Density, When Compared To The Control Group. Moreover, It Showed Statistically Low Significant Decrease In The Bone Height Loss Than The Control Group. Conclusion: Simvastatin Powder Is A Safe, Efficient And Easy Way For Mild Acceleration Of Bone Healing And Osseointegration Surrounding Titanium Dental Implants. The Simvastatin Drug Has The Main Function As Antihypercholaesterlemia Drug In Addition To Its Ostegeonic Effect On Bone.

Amal Abu El- Hassan Mohamed, Mahmoud Hamdy Eid And Nada Mohamed Wassef,

ABSTRACT
Sealants Form A Physical Barrier Between The Oral Environment And Deep Fissures That Contribute To Caries Prevention. It Is Postulated That Sealants Possessing Antibacterial Properties Are Advantageous.

Aim: Study The Bacterial Inhibitory Effect Of Two Fluoride Releasing Fissure Sealants (Teethmate F-Kuraray, Fissurit F- Voco) On The Inhibition Of Streptococcus Mutans And Lactobacillus Acidophilus.

Materials and Methods: The Strains Of Streptococcus Mutans And Lactobacillus Acidophilus Were Grown In The Brain Heart Infusion Broth Then Incubated For 18 Hr At 37?C And Subcultured In Selective Agar. The Zone Of Inibition Was Measured In Mm.

Results: Teethmate F-1 Showed More Antibacterial Property Against Streptococcus Mutans Than Fissurit F And There Was No Statistically Significant Difference Between Teethmate F-1 And Fissurit F Against Lactobacillus Acidophilus.

Conclusions: Within The Limitations Of This In-vitro Study, It Can Be Concluded That Both Materials Are Capable Of Contact Inhibition Of Streptococcus Mutans And Lactobacillus Acidophilus Growth.

Samia Mostafa Kamal, Rehab A. Abdel Moneim And Aml Mostafa Kamal,

ABSTRACT
Background: Human Eruption Is A Unique Developmental Process In The Organism. The Etiology Or The Mechanism Behind Eruption Has Never Been Fully Understood. Accordingly, The Mechanism Of Eruption Depends On The Correlation Between Space In The Eruption Course Created By The Crown Follicle, Eruption Pressure Triggered By Innervation In The Apical Root Membrane And The Ability Of The Periodontal Ligament To Adapt To Eruptive Movements.

Aim: This Study Was Designed To Localize And Delineate The Role Of The Signaling Molecule; Transforming Growth Factor Beta (TGF-?) Before, During And After Eruption.

Materials and Methods: The Study Was Carried Out On Twenty Adult Albino Rats (6-8 Months Old) And Of Average Weight 200-250 Gm. The Rats Were Housed Together For Mating. After Pregnancy Confirmation, The Off- Springs Were: Sacrificed At Birth (Group I), 5 Days Postpartum (Group II), 10 Days Postpartum (Group III) And 15 Days Postpartum (Group IV). Each Group Consisted Of Ten Off-springs. The Lower Jaws Of All Off-springs Were Then Dissected, Processed And Mounted In Paraffin Wax For Histological Examination, Immunohistochemical Assessment And Statistical Analysis.

Results: Immunohistochemical Investigation Showed That TGF-? Was Widely And Deeply Expressed In Tooth Follicle And Bone Trabeculae At The Base Of The Growing Tooth At All Developmental Ages And Was Significantly Increased At 15 Days Postpartum With Statistical Significance; P<0.0001. Conclusion: Although The Exact Mechanisms Of Eruption Are Not Yet Known, We Proposed A Close Relation Between Signaling Molecules And Eruption Process Based Upon Our Findings And The Apparent Effects Of TGF-? On Odontogenesis And On The Whole Eruption Process.

Nermeen Ahmed Hassan , Amr Hosni El-Khadem And Maha Wagdy El-Kerdawy,

ABSTRACT
Background: Titanium Has Been Used Considered The Gold Standard For Dental Implants For Many Years Due To Its Superior Mechanical Properties. However, It Has Many Drawbacks Regarding Corrosion And Esthetics That Required Searching For Another Alternative. In This Study, We Aimed To Determine The Amount Of Stresses Developing In The Peri-implant Bone Under Vertical Load When Different Types Of PEEK Are Used As An Implant Material.

Materials and Methods: Four Virtual Models Of A Mandible With Two Inter-foraminal Implants Supporting An Overdenture Were Designed Using SolidWorks Software. Unilateral Vertical Load Was Applied Over The Denture Teeth And Von Misses Stresses Were Collected From The Peri-implant Bone.

Results: Von Mises Stresses In The Coronal Portion Of The Peri-implant Bone Was The Highest Around PEEK Implants And The Least Around Titanium Implants. Conclusion: PEEK Can Be Used As An Alternative To Titanium In Dental Implants From The Mechanical Point Of View, But Further Clinical Studies Are Recommended To Test The Material Behavior Intraorally.

Mennat-Allah Sayed Gaber, Shaymaa I. Habib And Abdel-Hadi Mohamed Amin,

ABSTRACT


Purpose: The Aim Of This Study Was To Evaluate Solubility, Calcium And Phosphorus Ions Release And Bioactivity Of Resin Modified Glass Ionomer Cement Before And After Addition Of Nanobioactive Glass Particles.

Materials and Methods: One Commercially Available Resin Modified Glass Ionomer Cement And Nanobioactive Glass Particles Were Used In This Study. Bioactive Glass Was Added To The Cement Powder By Two Weight Percentages 2wt% And 5wt%. Solubility Was Evaluated Using ANSI/ADA Specification No.66-1989 For Glass Ionomer Cements. Twenty One Samples (n=7/gp) Were Prepared Using Split Teflon Mold (7.75�1.5mm). Solubility Was Recorded At 7 Days And 30 Days. For Calcium And Phosphorus Ions Release, 21 Samples (n=7/gp) Were Prepared Using The Same Mold And Stored In Deionized Water Then Recorded At 7 Days And 30 Days. Regarding Bioactivity ,12 Samples (n=4/gp) Were Prepared And Immersed In PBS Solution For 7 Days And 30 Days And Examined By Scanning Electron Microscope (Field Emission Gun) Attached With Energy Dispersive X-ray Analysis Unit EDXA. The Results Were Statistically Analyzed.

Results: Regarding Solubility, Results Showed A Statistically Significant Difference Between Group I, Group II And Group III After Both 7 Days And 30 Days. Moreover, Storage For 30 Days Showed Statistically Higher Solubility Values In All Groups Than 7 Days. Regarding Calcium Ions Release, There Was A Statistically Significant Difference Between Group I, Group II And Group III After Both 7 Days And 30 Days. However, No Statistically Significant Difference Was Recorded Between 7days And 30 Days In All Groups. For Phosphorus Ions Release, It Was Found That There Was A Statistically Significant Difference Between Group I, Group II And Group III After 7 Days. However, After 30 Days There Was No Statistically Significant Difference Between Group I, Group II And Group III. Results Also Showed Statistically Significant Higher Ph Ions Release After 30 Days Than 7 Days. Regarding Bioactivity, CaP Deposits Were Obvious Only In High Concentrations Of BAG (group III) After 30 Days Immersion In PBS On The Surface Of The Samples With Ca/P Molar Ratio =1.3.

Conclusions: 1. There Is A Direct Relationship Between The Amount Of BAG Added To RMGI And Its Solubility. 2. Although Addition Of BAG To RMGI Increased The Ion Bioavailability And Solubility, The Bioactivity Was Not Sufficiently Improved.

Mohamed S. Elbehairy, Nora Cheta, Tamer M. Nassef And Hamdy A. Hamed,

ABSTRACT
Background Comparing The Effect Of Implant Inclination On Stress Distribution In Peri-implant Bone In Mandibular All On Four Hybrid Prosthesis. Material And Methods Bone Model Was Reconstructed From CBCT Scan Segmentation, Implants And Cad/cam Prosthesis Were Exported As STL Files And Converted Into Solid Parts By Reverse Engineering Followed By Part Assembly, Meshing And Load Application. Results A Large Decrease In Von-mises Stresses Was Observed In The Model With 30 Degrees Tilted Implants. Conclusion Model D30 Was The Best Treatment Design Regarding Stress Distribution Compared To The Other Two Models.

Osama S. Selim, Jihan F. Younis And Tamer A. Hamza,

ABSTRACT
Statement Of Problem: The Mechanical Properties Of Recently Introduced Zirconia Reinforced Lithium Silicate Materials As Full Anatomical Restorations Require More Evaluation. The Lack Of Documentation Studying The Effect Of Different Finish Line Curvatures On The Mechanical Behaviour Of Ceramics Necessitated Investigation. The Purpose Of This In-vitro Study Is To Compare The Fracture Resistance Of Recently Introduced Zirconia Reinforced Lithium Silicate To Lithium Disilicate Using Two Different Finish Line Curvatures.

Materials and Methods: Twenty-eight Crowns Were Milled And Fabricated Using CAD/CAM System On Epoxy Dies Duplicated From A Stainless-steel Master Die. They Were Divided Into 2 Equal Groups (n = 14) According To The Ceramic Material Type Used: Group I, Monolithic Lithium Disilicate (IPS E.maxCAD) And Group S, Monolithic Zirconia-reinforced Lithium Silicate (Vita Suprinity). According To The Finish Line Curvature; Zero And 3mm Curve, Each Group Were Subdivided Into Two Equal Subgroups (n=7). All Specimens Were Cemented On Epoxy Dies Using A Self-adhesive Resin Cement (TOTALCEM, Itena), And Then Loaded Until Fracture Using A Universal Testing Machine. Kruskal-Wallis Test Was Used To Compare Between The Two Ceramic Types. Mann-Whitney U Test Was Used To Compare Between The Two Finish Line Curvatures. The Significance Level Was Set At P ? 0.05. Hypothesis: The Two Different Finish Line Curvatures Will Affect The Fracture Resistance Of The Tested Monolithic Crowns

Results: With Both Ceramic Types, There Was No Statistically Significant Difference Between Mean Fracture Resistance Values Of The Two Finish Line Curvatures. IPS E.maxCAD Showed The Statistically Significantly Higher Mean Fracture Resistance Than Vita Suprinity. Conclusion: The Finish Line Curvature Had No Effect On The Fracture Resistance Of The Tested Ceramic Restorations. The Strength Of Tested Ceramic Is A Material Dependant Where IPS E.maxCAD Crowns Showed Higher Fracture Resistance Mean Values Than Vita Suprinity

Rana Abdel Hameed El Gazar, Mohamad Seddik Mohamad Kamel And Eman Fahmy Ado Elfetoh .,

ABSTRACT
Background: Tooth Bleaching Has Become Popular In Dentistry Since It Has Been Shown To Be An Effective And Noninvasive Treatment. The Bleaching Agent Is Applied In Intimate Contact With The Teeth, With Potentially Associated Restorations, It Has Been Speculated That This Process Could Cause Negative Alterations In Oral Substrates

Purpose: To Evaluate In-office Light-activated Bleaching On Translucency Of Hybrid Ceramic By Measuring Transmittance And Absorption Of Light By Spectrophotometer.

Materials and Methods: Twenty Specimens Were Prepared In (3M2-T) Shade And Were Cut From CAD/CAM Blocks Of Hybrid Ceramic. The Study Will Consist Of Twenty Specimens Of Hybrid Ceramic And These Specimens Will Be Randomly Divided Into 2 Groups. The Translucency Of The Samples Of Group I Act As A Controlled Group Which Were Not Received32% Hydrogen Peroxide Bleaching Agent Was Measured By Spectrophotometer. Samples Of Group II Received 3 Times Applications Of The Bleaching Agent. Each Cycle Ranges 15-20 Min. Then Exposed To A LED Power Bleach System For Three Cycles � 15 Min Each With 10 Min Resting Time. New Translucency Evaluation By The Spectrophotometry In The Same Way For Samples Of Group II.

Results: In This Study, A Comparison Of The Groups Using Independent T-test Revealed Statistically Significant Differences In Translucency Values Before And After Bleaching (P<0.001). After Bleaching, We Can Observe A Decrease In The Absorption Of Light. Also, There Was An Increase In Transmittance Of Light In Group II Samples When Compared With Samples Of Group I. This Is Proved That Bleaching Caused A Highly Significant Change In Translucency Values Of Hybrid Ceramic. Conclusion: In Conclusion, Statistically Significant Differences Among The Translucency Changes Of All Test Groups Were Found After Exposing Them To The Bleaching Agent.

Mohamed Khalid Ebn- Elwaleed Diab, Manal Rafie Hassan And Mohammed Moustafa Shalaby,

ABSTRACT

Objectives: The Aim Of This Study Was To Assess The Effect Of Finishing Techniques On Translucency Of Two All Ceramic Materials (pressed Lithium Di Silicate And Yttrium Stabilized Tetragonal Zirconia). Methods: Sixty Discs Were Fabricated; Thirty Of Each Material Was Divided Randomly To Three Sub Groups According To Techniques Of Traditional Polishing, Auto Glaze And Add-on Glaze. All Of Discs Were Subjected To Aging Procedures Of Thermocycling & Subjected To Different Coloring Solutions That Mimic The Conditions Of Oral Cavities Tea, Coffee, Orange Juice, Lemon Juice And Cola . All Discs Were Subjected To Translucency Test Using Portable Intraoral Digital Spectrophotometer (Vita Easy Shade) Against Black & White Backgrounds For Comparison With The Respective Control Groups.

Results: Regarding To Polishing & Glazing Tests Was The Only Significant Test From The Three Way ANOVA (p Value 0.001). Pressed Lithium Di Silicate Discs Were More Translucent In All Subgroups With High Statistical Significance (P Value <0.001). Pressed Lithium Di Silicate Discs Were Non-significant Before And After Emersion In Coloring Solutions And Aging Thermo-cycling Test. (P Value 0.336). Yttrium Stabilized Tetragonal Zirconia Discs Was Non-significant Before And After Emersion In Coloring Solutions And Aging Thermo-cycling Test When Subjected To Auto Glaze. (P Value 0.586). Tetragonal Zirconia Discs Were Significant Before And After Emersion In Coloring Solutions And Aging Thermo-cycling Test When Subjected To Add-on Glaze (P Value 0.175) And Traditional Polishing (P Value 1). Conclusion: It Could Be Concluded From This Study, That Pressed Lithium Di Silicate Was The Material Of Choice When It Comes To Esthetics As It Was More Translucent Than Yttrium Stabilized Tetragonal Zirconia & It Was Resistant To Staining By Food And Drinks, More Over It Was Highly Resistant To Ageing As Proven By Thermocycling.

Mohamed Gamal Hamdy Abddel-Aal, Cherief Adel Mohsen And Shams Waaz Amgad .,

ABSTRACT
Statement Of The Problem: Color Stability Of All Ceramic Restorations Cemented In The Oral Cavity Is Point Of Concern For Both Dentist And Patient. The Aim Of This Study Was To Evaluate Color Stability Of Zirconia Ceramic After Being Subjected To Aging.

Materials & Methods: Fifteen Zirconia Samples Were Constructed In The Form Of Discs By Copy Milling. All The Samples Were 5mm In Diameter But With Different Thickness. The Samples Were Divided Into Three Subgroups According To The Thickness Of The Ceramic C1:0.7mm, C2:1mm And C3:1.5mm. Spectrophotometric Measurements Were Made Before Aging And After Aging Where The Samples Were Immersed In Sodium Hypochlorite 1% For 15 Days As Aging And ?E Was Calculated. Data Were Tabulated And Statistically Analyzed Using One-way Analysis Of Variance (ANOVA). Result: The Most Color Change Occurred With 1.5mm Ceramic (?E:15.55�1.46), The 1mm Ceramic Had A Value About (?E: 5.2�1.27), While The Least Color Change Occurred With 0.7mm Ceramic (?E 3�0.82). Conclusion: There Was Increase In The Color Change With The Increase In The Thickness Of The Ceramic. Aging Had Significant Effect On The Color Stability Of Zirconia Ceramic With The Most Color Change Occured With The Higher Ceramic Thickness. Clinical Recommendation: Zirconia Should Not Be Used With A Thickness More Than 0.7mm To Attain Acceptable Color Stability.

Mahmoud Ahmed Kamel, Manal Rafei Hassan And Raiessa Mohammed Hashem .,

ABSTRACT

Objectives: The Purpose Of This Study Is To Investigate The Wear Of Recently Used CAD/CAM Ceramics Against Natural Tooth Structure In A Chewing Apparatus.

Materials and Methods: Thirty Rectangular Ceramic Samples (12x14x2) Were Divided Into Three Groups (n=10): Translucent Zirconia (Zr), Lithium Disilicate (e-max) And Hybrid Ceramic (vita Enamic). Natural Human Premolar Cusps Were Used As Antagonists. Ceramic Samples And Premolar Antagonists Were Dynamically Three-body Loaded In A Dual Axis Chewing Simulator With 49 N For 150,000 Loading Cycles. Wear Measurement For Ceramic Samples And Premolar Antagonists Were Calculated Using Weight Loss (gm.), And Surface Roughness Measurements (?m). Data Were Statistically Analyzed With One-way ANOVA Test, Followed By Post-hoc Test Between Groups.

Results: A Significant Difference Was Detected Between The Mean Values Of Weight Loss (gm.) Of The Three Tested Ceramic Materials And Their Premolar Antagonists With The Greatest Weight Loss Detected In Polymer-infiltrated Ceramics (Mean � SD: 0.0094�0.0028) Followed By Lithium-disilicate ( 0.0032�0.0009) And The Lowest Loss In Zirconia (0.0009�0.0002) And P Value Of (<0.001). For The Premolar Antagonists; The Greatest Loss In The Mean Weight Of Premolar Cusps Was Detected In Cusps Opposing Zirconia (0.0113�0.0018), Followed By Lithium-disilicate (0.0038�0.0009) And The Least Loss Detected In Cusps Opposing Polymer-infiltrated Ceramics (0.0003� 9) And P Value Of (<0.001). A Significant Difference In Surface Roughness (?m) In The Tested Ceramic Samples And In The Antagonistic Premolar Cusps. Surface Roughness Increased After Wear Testing But The Greatest Increase Was Found In Polymer-infiltrated Ceramic Samples (0.0056�0.0008) Followed By Lithium Disilicate (0.0033�0.0009) And The Least Change Was In Zirconia Samples (0.001�0.0003 And P Value Of (<0.001). Surface Roughness Of Zirconia Antagonistic Premolar Cusps Showed The Greatest Increase (0.0042�0.0007) Followed By Lithium-disilicate (0.0024�0.0009), While The Least Increase In Roughness Was In Cusps Opposing Polymer-infiltrated Ceramic Samples (0.0004�0.0001) And P Value Of (<0.001). Conclusion: Zirconia Showed The Best Wear Behavior Followed By Lithium-disilicate And Polymer-infiltrated Ceramics. Polymer-infiltrated Ceramic Is The Most Antagonist-friendly Among Tested Materials.

Hala Khaled Elsayed; Amal Hassan Abdel-Rahman And Dina Soliman Khater .,

ABSTRACT
Background: Head And Neck Cancer Among The Most Common Incident Cancers In Men Worldwide.�Early Detection Is The Key To Higher Survival Rate Against This Type Of Cancer. Cytokeratins Are Essential Intracellular Components, Reflecting Distinct Cellular Properties And Differentiation Stages In Epithelial Tissues. The CYFRA 21-1 Assay, Which Is The Soluble Fragment Of Cytokeratin 19, Has Been Proven Capable Of Early Detection Of Epithelial Carcinomas. This Study Was Conducted To Correlate The Immunoexpression Of CK 19 With The Concentration Of Its Salivary Fragments (CYFRA 21-1) For Early Detection Of Induced Dysplastic Changes Prior To Malignant Transformation In Experimental Rat. Conclusion: There Is A Positive Correlation Between CK 19 Immunoexpression In Tissue And The Level Of CYFRA 21-1 In Saliva.

Esraa Khairy Morsy, Enas Anter Abdel Ghafar And Sahar Hosny El Dessouky,

ABSTRACT

Objectives: The Study Aimed To Assess The Accuracy Of Linear Measurements On Three-dimensional (3D) Volume Rendered Images Generated From Cone Beam Computed Tomography (CBCT) In Comparison With Two-dimensional Multiplanar Reformatted Slices (2D MPR).

Materials and Methods: 16 Dry Human Skulls Were Scanned Using Planmeca Promax 3D Mid CBCT Machine, 23 Anatomical Landmarks Were Selected And Marked On Each Skull Using Gutta-percha Pieces, 14 Linear Measurements Were Taken Between Them Using Digital Caliper. Using A Third Party Software (In Vivo 5) The Same Linear Measurements Were Assessed On Both 3D VR Images And 2D MPR Ones. The Absolute Measurement Error �AME Was Assessed For Both Image Types, Then Compared Using Paired T-test.

Results: Paired T- Test Comparison Between ME Values Of Both Image Types Showed That Non-statistical Significant Difference Between Them Expect For MN Width� And �Me-POG�. Conclusion: Linear Measurements On Both 3D VR And 2D MPR Images Are Reliable And Accurate When Compared With Direct Caliper Measurements With Slight Higher Accuracy In 3D VR Images.

Abdallah Hassan M.; Manal M. Hosny And Rasha Wagih Mostafa .,

ABSTRACT

Objectives: To Clinically Evaluate Toothpaste Containing 8% Arginine, Calcium Carbonate And Sodium Mono-fluoro-phosphate In Comparison To Other Containing 8% Strontium Acetate And Sodium Fluoride On The Relief Of DH In Chronic Periodontitis Patients. Methods: 46 Patients With Slight To Moderate Chronic Periodontitis Were Randomly Assigned To One Of Two Groups And Followed Up For 8 Weeks. All Patients Received Full Mouth Mechanical Debridement. Air Blast Test And Cold Water Test Were Assessed Using Schiff Scale And VAS Score Respectively. Clinical Parameters Plaque Index (PLI), Gingival Index (GI), Probing Pocket Depth (PPD), Clinical Attachment Level (CAL) Were Recorded.

Results: Significant Reduction In Median Schiff Scores After Treatment With 33.3% Reduction From Baseline For Both Groups, With No Significant Difference Between Them. For VAS Scores, The Arginine Group Reported Earlier And Significant Improvement In Sensitivity To Cold Water Stimulus That Reached 55%. In The Strontium Group The Onset Of Reduction In Sensitivity Started From Week 3 And Reached 25%. Statistically Significant Difference Between The Two Groups Started From Week 7 Only. Conclusion: The Use Of 8% Arginine Toothpaste Twice Daily For 8 Weeks Produced Earlier And More Significant Reduction In Perception Of DH According To VAS Scores In Chronic Periodontitis Patients. No Significant Difference Between The Two Agents Could Be Detected In Relevance To Changes In PPD, CAL, PLI And GI.

Mohamed Omaia Ahmed, Maged M. Negm, Yousra M. Nashaat, Nehal N. Abdelaziz And Amal S. Othman,

ABSTRACT
Background: The Elimination Of Intracanal Microorganisms Is Essential For The Long-term Success Of Root Canal Treatment. This May Be Achieved By Mechanical Cleaning And Shaping In Conjunction With Irrigation And Antibacterial Agents. The Aim Of This Study Was To Assess The Ability Of Triple Antibiotic Paste With Diclofenac Potassium Anti-inflammatory Drug Versus Calcium Hydroxide Used As Intra-canal Medication In Reducing Intracanal Bacterial Count. Methods: 84 Patients With Asymptomatic Uniradicular Necrotic Teeth Were Randomly Assigned Into Two Groups According To The Intra-canal Medication Used: Calcium Hydroxide Group (CH) And Triple Antibiotic Paste With Diclofenac Potassium Anti-inflammatory Drug Group (TAPC). After Isolation, Access Cavity Was Performed Followed By Chemo-mechanical Preparation Using Rotary Protaper Universal Files With Saline Irrigation. Bacteriological Samples Obtained From The Root Canals Before (S1) And After Instrumentation (S2) In The First Treatment Session. Subsequently, Intra-canal Medication Was Placed And Bacterial Reduction Was Assessed In The Second Session After 3 Days (S3) Using Colony Forming Unit Test.

Results: Both Intracanal Medicaments Showed A Statistically Significant Bacterial Count Reduction From S2 To S3. TAP+Catafast Intracanal Medication Achieved Significant Bacterial Count Reduction Compared To That Of Ca(OH)2. Conclusion: The Use Of Triple Antibiotic Paste With Diclofenac Potassium Anti-inflammatory Drug As Intracanal Medication Was More Effective Than That Of Calcium Hydroxide In Asymptomatic Uniradicular Necrotic Teeth.

Hassan Mohamed Salah; Manal Mohamed Hosny; Olfat Gameel Shaker And Rasha Wagih Mostafa .,

ABSTRACT

Objectives: The Aim Of The Present Study Was To Evaluate The Possible Effect Of Vitamin E Administration As An Adjunct To Scaling And Root Planing On GCF Levels Of Malondialdehyde And Clinical Parameters In Patients With Chronic Periodontitis. The Adjunctive Effect Of Vitamin E Was Compared To Scaling And Root Planing Alone. Methods: Thirty-two Patients With Chronic Periodontitis Participated In This Study. They Received Scaling And Sub Gingival Debridement With Either Administration Of Vitamin E (Group I) Or Placebo (Group II). The Primary Outcome Was To Measure The Level Of Malondialdehyde (MDA) In Gingival Crevicular Fluid (GCF) Using The Quantitative Sandwich ELISA Technique. In Addition, Clinical Parameters Such As PLI,GI, PPD And CAL Were Recorded At Baseline And 3 Months After Treatment. Results The Mean Difference Between Baseline And 3 Months Scores Presented Significant Difference Between The 2 Groups With Respect To CAL And PD. The Test Group Presented More Gain In CAL (0.78mm Versus 0.46mm) And More Reduction In PD (0.81mm Versus 0.41mm). The Test Group Presented Higher Reduction In GCF Level Of MDA 3 Months Posttreatment. However, The Difference Between Groups Did Not Reach Statistical Significance. Conclusion: Scaling And Root Planing Significantly Reduced GCF Levels Of MDA 1 And 3 Months After Treatment Compared To Baseline Values. The Adjunctive Administration Of Vitamin E Produced Higher Reduction In GCF Levels Of MDA 3 Months After Treatment In Comparison To Control Group. The Adjunctive Administration Of Vitamin E Produced More Significant Reduction In Full Mouth Scores For PD And More Significant Gain In Full Mouth Scores For CAL 3 Months After Treatment.

Radwa M. Fayez , Jealan M. El Shafei And Alaa El Baz,

ABSTRACT
Objective: The Objective Of This Study Was To Assess And Compare The Effect Of Calcium Hydroxide/ Nano Silver Particulate Combination Intracanal Medicament Versus Calcium Hydroxide Intracanal Medicament On Postoperative Pain In Cases With Necrotic Pulp. Subject And Methods: Forty Patients With Necrotic Pulp In Anterior Teeth Were Included. After Through Clinical And Radiographic Diagnosis, Patients Were Enrolled Into Two Equal Random Group Each Of 20 Patients. All Caries Were Removed And The Pulp Chamber Was Accessed With Sterile High Speed Carbide Burs Under Sterile Saline Irrigation, Standard Endodontic Treatment Was Performed In Two Visits Using Rotary Nickel Titanium Files For Shaping, 2.5% Sodium Hypochlorite For Cleaning. Using Lentulo Spiral Filler, Medicaments Were Placed Under Aseptic Conditions Into The Canals According To Each Group At The End Of The First Visit, Lateral Condensation Technique With Resin Sealer For Obturation Was Done 7 Days Later. Pain Was Assessed Pre-operatively, Then After 6, 12, 24 And 48 Hours After Root Canals Obturation. Numerical Rating Scale (NRS) Was Used As The Primary Outcome Measure. Patients Were Given Analgesics To Be Administrated In Case Of Emergency. All Demographic Data And NRS Scores Were Collected From The Patients And Statistically Analyzed.

Results: Results Showed That There Was No Statistically Significant Difference In Pain Incidence Between The Two Groups After 6 Hrs. However Combining Pain Categories (mild And Moderate) The Comparison Between 2 Groups Become Statistically Significant. There Was No Significant Difference In Incidence Of Analgesic Intake Between The Two Groups.

Conclusions: Nano Silver Seems To Have A Good Potential To Be Used As An Appropriate Vehicle Of Ca (OH) 2 In Order To Reduce The Incidence Of Post-operative Pain In The First 24 Hours Following Root Canal Treatment.

Nourhan A. El-Maghrabi, Yehia S. Aboushady And Seham A. Hanafy,

ABSTRACT
Objective: The Aim Of This Study Was To Evaluate The Effect Of Sintering, Surface Treatment And Different Types Of Cements On The Shear Bond Strength Of Zirconia-reinforced Lithium Silicate Restorations.

Materials and Methods: Forty Specimens Of Zirconia-reinforced Lithium Silicate Of 10 Mm In Diameter And Thickness Was 2mm Were Randomly Divided Into Two Groups (N=20), One Group Was Cut And One Surface Polished While The Other Group Was Cut And Sintered. Each Group Was Randomly Subdivided According To The Method Of Surface Treatment; One Group Was Sandblasted While The Other Group Was Sandblasted And Etched With Hydrofluoric Acid And Luted To Composite Cylinders By Using Two Types Of Resin Cements: A Dual-curing (Calibra Resin Cement) And Dual-curing (Panavia V5) Adhesive Systems According To The Manufacturer�s Instructions. Specimens Were Thermo-cycled Between 5�C And 55�C In Water For 500 Cycles, Shear Bond Strength Test Was Performed In A Universal Testing Machine At 0.5 Mm/min Until Failure Occurred. All De-bonded Samples Were Examined Under A Stereomicroscope To Identify The Failure Mode.

Results: The Effect Of Type Of Surface Finish (sintered /one Surface Polished) Within The Specimens Showed That Sintered Provided Higher Bond Strength Than One Surface Polished . On Comparing Between The Type Of Surface Treatment Sandblasted Or Sandblasted + Hydrofluoric Acid Etched And Silanation Used In Each Subgroup, The Sandblasted Followed By Hydrofluoric Acid Etched And Silanation Provided Higher Bond Strength Than Sandblasted . Moreover, Calibra Resin Cement Provided Higher Bond Strength Than Panavia V5 Resin Cement.

Conclusions: It Was Concluded That The Type Of Surface Finish, Surface Treatment And Type Of Resin Cement Had A Significant Effect On The Shear Bond Strength Of Zirconia Reinforced Lithium Silicate Ceramics.

Moataz Moktar, Eman Mohie, Fady Fahim And Amr Labib .,

ABSTRACT
Objective: To Detect Influence Of Bend-back Of The NiTi Wires During Leveling And Alignment On The Maxillary Incisors.

Materials and Methods: The Sample Comprised 42 Females And Males Aging About 20+2 Years. They Were Randomly Allocated Into Two Groups: Control Group (A) And Intervention Group (B) With Bend-back Of All Leveling Arch Wires. Lateral Cephalomtric Radiographs Were Performed And The Data Were Statistically Analyzed.

Results: Significant Increase In The Maxillary Incisors� Proclination Was Manifested In Both Groups, Where There Was Increase In The U1/PP, U1/NA And U1-NA(mm) Measurements.

Conclusions: Bend-back Of The Niti Wires During The Leveling And Alignment Stages Did Not Prevent Or Decrease The Incisors� Proclination Of The Maxillary Incisors.

Tarek Salah Hashim Ali, Nora Cheta And Mahmoud EL Far,

ABSTRACT
In-vivo Study Was Carried Out To Evaluate The Amount Of The Linear Dimensional Changes Of Maxillary Complete Denture Fabricated By Using Digital Light Projection (DLP) 3D Printing Method And Conventional Compression Flask Method. Eighteen Completely Edentulous Patients Were Included In The Study. For Each Patient, The Maxillary Master Cast Was Used To Fabricate Duplicate. The Obtained Duplicates Were Used To Fix Three Cover Screws At The Following Positions; A: The Incisive Papilla, B: The Right Second Molar Area, C: The Left Second Molar. Patients Were Divided Into Two Equal Groups Of Nine Participants, Group (1) The Conventionally Processed Complete Denture And Group (2) The Digital Light Projection (DLP) 3D Printed Complete Denture. The Dimensional Changes Were Measured Using Digital Caliper With Accuracy Of 0.02mm. Dimensional Changes Occurred In Both Types Of Complete Dentures Bases. Digital Light Projection (DLP) 3D Printed Complete Dentures Showed More Dimensional Stability Than The Conventional Compression Flask Complete Dentures With No Statistical Significance.

Nesma Nabil Mahrous, Dina Soliman Khater And Nermin Raouf .,

ABSTRACT
Background: Ameloblastoma (AB) And Keratocystic Odontogenic Tumor (KCOT) Are Benign Locally Invasive Epithelial Odontogenic Neoplasms With High Recurrence Rate. Furthermore, Ameloblastic Carcinoma (ABC) Is The Malignant Variant Of Ameloblastoma With An Aggressive Behavior As Well As Poor Prognosis And High Recurrence Rate. Aim Of This Study Was To Evaluate The Immunohistochemichal Expression Of Ezrin Antibody In These Epithelial Odontogenic Tumors Aggressive Behavior.

Materials and Methods: Immunostaining For Mouse Monoclonal Anti-human Ezrin Antibody Was Performed On 2 Tooth Germ (was Used As A Control), 15 AB, 10 ABC And 14 KCOT Archival Blocks.

Results: The Statistical Analysis Revealed The Highest Mean Area Of Ezrin Immunoexpression In ABC, While The Lowest Mean Value Was Recorded In Tooth Germs. It Also Revealed That The Difference Between All Studied Caeses Was Extremely Significant. Conclusion: The Positive Cytoplasmic Immunoexpression Of Ezrin In AB, ABC, And KCOT Indicates That It It Could Be A Valuable Tool In Detecting Their Biological Behavior, Invasiveness And Progression.

Esraa Abdel Ghaffar Ahmed, Mohamed Adel Ezzat Khairy And Maha Abdel Salam El-Baz .,

ABSTRACT
Objective: The Study Was Conducted To Evaluate The Effect Of 8% Arginine Based Toothpaste In Comparison To 8% Strontium Acetate Based Toothpaste On Dentine Hypersensitivity Reduction.

Materials and Methods: This Was A Randomized, Triple-blind, Placebo Controlled Study. Fifty One Subjects With A Confirmed Diagnosis Of�dentin Hypersensitivity�were Randomized To One Of Three Treatments: �Arginine Based Toothpaste (Colgate Pro-relief), Strontium Acetate Based Toothpaste (Sensodyne Rapid Action), Or Placebo. A Standard Test Stimulus Was Calibrated Short Blast Of Air Syringe, Applied To Sensitive Dentin�surfaces. Subjects Recorded The Intensity Of�sensitivity�in Response To Stimulus On A Visual Analog Scale At Baseline, And After 1 Week, 2 Weeks And 3 Months.

Results: All Study Treatments Showed Statistically Significant Reductions From Baseline In DH Pain At All Time Points Where (p<0.001). 8% Arginine Based Toothpaste (Colgate Pro-relief) Was Statistically And Clinically Significant Higher When Compared With 8% Strontium Acetate Based Toothpaste (Sensodyne Rapid Action). These Products Were Shown To Be Significantly Superior To The Placebo At All Time Intervals. Hence, The Hypothesis Was Accepted. Conclusion: 8% Arginine Based Toothpaste And 8% Strontium Acetate Based Toothpaste Are Considered A Promising Agents That Can Be Used To Reduce Pain Associated With Hypersensitivity. It Has Been Shown That There Is Considerable Reduction Clinically And Statistically Significant In Dentinal Hypersensitivity In The Participants Under The 8% Arginine Based Toothpaste Group When Compared With The 8% Strontium Acetate Based Toothpaste.

Mohamed Ali Attia, Mohammed Atef And Maha Hakam,

ABSTRACT
Background: Several Grafting Materials Have Been Proposed For Sinus Augmentation Including Autogenous Graft, Allograft, Xenograft, Synthetic Biomaterials And Recently Platelets Concentrates.

Purpose: Evaluating Effect Of Injectable Platelet Rich Fibrin (I-PRF) Mixed To Deproteinized Bovine Bone (DBB) (sticky Bone) In Sinus Augmentation In Comparison With A Solely DBB Regarding Amount Of Bone Height Gained, Bone Density And Implant Stability.

Materials and Methods: 19 Patients With 20 Pneumatized Sinus 3:6 Mm Residual Alveolar Ridge Height Underwent Single Stage Sinus Lift. 10 Sinuses Were Grafted With DBB In Control Group While Sticky Bone Was Used In 10 Sinuses As A Test Group. CBCT Were Taken Immediately And 6 Months Postoperative. Osstell Readings Were Taken After Insertion And During Implant Exposure.

Results: After 6 Months, Mean Bone Height Gain Of DBB Group Was 8.46� 1.87 Compared To 8.43�2.67 In Sticky Bone Group. This Was Statistically Non-significant. Mean Bone Density Value Was 408.4�66.7 In DBB Group Compared To 547.8�158 In Sticky Bone Group. This Was Statistically Significant. For Stability, Mean ISQ Value Was 74.7�7.2 In DBB Group And 74.7�6.4 In Sticky Bone Group. This Was Statistically Non-significant. Conclusion: Regardless Limitations Of This Study, Results Indicate No Advantages For Sticky Bone Over DBB On Amount Of Bone Generated Or Implant Stability. However, Sticky Bone May Enhance Quality Of Regenerated Bone Inside The Sinus.

Mohamed M. Sabry; Mohamed Riad Farid And Rasha Ra�fat Abdel Aziz .,

ABSTRACT


Aim: To Assess The Reliability Of The Fluorescence Camera Or Caries Detection Dye Versus Visual Tactile Method In Caries Excavation Using Bacteriological Assessment Method.

Materials and Methods: 60 Carious Lesions In 20 Paticipant (3 In Each Paticipant) Was Chosen In This Study. In Each Participant, There Had Been 3 Carious Lesions ; The Excavation End Point Of One Cavity Was Determined Using Visual Tactile Method. The Two Other Cavities Were Inspected Using The Fluorescent Camera And Caries Detector Dye (CDD) To Determine The Excavation Endpoint Respectively. Dentine Samples From The Three Cavities Were Collected Before And After Caries Excavation For The Bacteriological Assessment.

Results: The Visual Tactile Method Showed Lowest Reduction In The Bacterial Count Followed By Caries Detector Dye Followed By The Highest Reduction For Fluorescent Camera With A Statistically Significant Difference Between Each Other�s. Conclusion: The Light Induced Fluorescent Intraoral Camera Is More Effective In Removing Infected Dentin And In Reaching The Excavation Endpoint.

Yomna Saadi, Farid Medhat And Nashwa Salah .,

ABSTRACT

Objectives: The Purpose Of This Study Was To Evaluate The Presence Or Absence Of The Second Mesiobuccal Canal Of Permanent Maxillary First And Second Molars In An Egyptian Population Using Cone-beam Computed Tomography Scanning. Methods: The Study Was A Cross Sectional Retrospective Study Performed On 198 Maxillary First And Second Permanent Molars From 60 CBCT Scans Belonging To Egyptian Individuals. Radiographic Examination Was Done Using Cranex 3DX � SOREDEX, Finland With Image Capture Parameters Set At�FOV Of 8 X 6 Cm, 90 KV, 10 MA And An Exposure Time Of 6 Seconds. The Voxel Size Was 0.2 Mm.

Results: A Total Of 198 CBCT Images Of Maxillary First (n?=?102) And Second Molars (n?=?96) From 60 Patients Were Analyzed. Frequency And Percentage Of The Presence Of 2nd Mesiobuccal Canal In The Whole Sample (198 Molars Of Both Females & Males) Was Interpreted By Three Oral Radiologists Independently Twice. The Results Showed That The Inter-rater Reliability For The Maxillary First Molars Was High (? = 0.8280), I.e. That The Three Observers Strongly Agree And For The Second Maxillary Molars Was Good (? = 0.7862), I.e. That The Three Observers Agree. The Results Also Showed For Observer 1, 2 &3 Highly Statistically Significant Intra-rater Reliability (P= <.0001). Conclusion: Within The Limitations Of This Study, It Can Be Concluded That The Prevalence Of The Second Mesiobuccal Canal In Maxillary First And Second Molars Is 43.4% In The Studied Patients Of Egyptian Population.

Ashraf Mohamed Desokey, Ahmed Gamal Ahmed And Emad Mohamed Tolba Agamy,

ABSTRACT
Objective: The Aim Of This In Vitro Study Is To Evaluate Strain Induced By Different Prosthetic Options Using Single Posterior Implant With Two Splinted Natural Abutments In Lower Unilateral Distal Extension Base Removable Partial Denture (Kennedy Class II).

Materials and Methods: In This Study An Epoxy Resin Model Was Used To Simulate A Class II Kennedy Edentulous Situation With Missing All Molars. The First And Second Premolars Were Splinted As The Main Abutments And An Implant Was Placed At The Site Of The Second Molar As The Distal One. Three Different Prosthetic Designs Were Constructed As Follows: -Group I: (cross Arch Stabilization Partial Overdenture). _ Group II: (side Plate Partial Overdenture). _ Group III: (fixed Partial Denture ( Load Application A Unilateral Ascending Load (25, 50, 75,100 N) Was Frequently Applied To The Selected Points Of The Abutments Over An Epoxy Resin Bite Block With The Loading Tip Of The Device In Axial And Non-axial Directions. Strain Gauges Were Cemented At The Following Areas (buccal And Lingual) To The Abutments And The Implant. (1) The Strain Meter Measure The Strain Every 25 N And Record It In Computer. (2) Five Minutes Were Left Between Each Loading As Period Of Rest To Allow For Heat Dissipation. (3) Every Load Was Applied 5 Times For Each Design And For Each Load Increment.

Results: The Total Stresses Recorded On Both The Implant And The Abutment Teeth In The Three Groups Showed That The Fixed Design Produced The Least Stresses Followed By Cross Arch Design And Maximum Stresses Were Rec Orded In Side Plate Design. The Maximum Micro Strain Range Recorded Under Axial Loading Was 283.662 Micro Strain Units, While Under Oblique Loading It Was 591.07 Micro Strain Units. No Failure Occurred In Any Part Of The Model. All Maximum Stresses Were Just A Fraction Of The Functional Loading Within The Biological Range (1). Conclusion And Clinical Significance: Within The Limitation Of The Current Study It May Be Conducted That The Use Of The Fixed Tooth- Implant Supported Partial Dentures Produced The Least Strain Among The Tested Designs, So It May Be Recommended In These Cases.

Nancy Sayed Abdel Aziz , Hesham Elansary And Lamia Kherialla,

ABSTRACT


Purpose: The Purpose Of This In Vitro Study Was To Evaluate The Marginal Accuracy And Internal Fit Of Zirconia Monolithic Crowns And Compare It To PEEK Monolithic Crowns, Milled By CAD/CAM. Methods: One Master Stainless Steel Die Resembling A Lower Second Molar Was Fabricated And Duplicated Using One-step Dual Viscosity Impression Technique. Twenty-two Auto Polymerizing Epoxy Replica Dies Were Digitized Using Extra-oral Optical Scanner, And Crowns Were Milled From PEEK And Zirconia Blanks. Internal Gap And Marginal Accuracy Measurements Were Recorded Using Silicone Replica Technique And Digital Microscope Respectively.

Results: For Internal Fit Results, It Was Found That Zirconia Group Recorded Statistically Non-significant Higher Internal Gap Mean Value Than PEEK Group As Indicated By Two-way ANOVA Test (P=0.> 0.05). For Marginal Accuracy Results, It Was Found That PEEK Group Recorded Statistically Significant Higher Marginal Gap Mean Value Than Zirconia Group As Indicated By Unpaired T-test (P=0.0206< 0.05). Conclusion: Both Materials Showed Marginal Accuracy And Internal Gap Values Within The Clinically Acceptable Values. However, PEEK Crowns Showed Superior Internal Fit And Inferior Marginal Accuracy To Zirconia Crowns.

Ahmed Mohamed Samy, Moustafa Ezz, Mohamed El Serougy And Ramy El Beialy .,

ABSTRACT
Objective: The Aim Of This Study Was To Evaluate The Stability And Measuring Marginal Bone Loss In Early Loading Of Single Dental Implants In The Mandibular Posterior Area. Patients And Methods: The Study Sample Consisted Of 20 Patients Who Were Enrolled From Outpatients Clinic At The Department Of Oral And Maxillofacial Surgery, Faculty Of Oral And Dental Medicine, Cairo University

Results: This Study Was Conducted To Evaluate The Stability And Measure The Marginal Bone Loss In Early Loading Of Single Dental Implants In The Mandibular Posterior Area. A Total Of 20 Patients With Age Range 21-51 Years, 8 Males And 12 Females Participated In The Study. Conclusion: 1-The Implant Stability Increases After Early Loading Which Increases The Rate Of Success. 2-The Rate Of Marginal Bone Loss After Early Loading Is Adequate For The Success Of The Dental Implant.

Nadhel A. Mohamed , Heba Salah El-Dein Hamza And Mai Mamdouh El-Sayed,

ABSTRACT


Aim: To Assess The Antimicrobial Effect Of Aqueous Extract Of Cinnamon 20% And Ginger 20% In Comparison Chlorhexidine 0.2% On Oral Streptococcus Mutans.

Materials and Methods: Twenty One Participants Selected For The Study, Were Divided Into Three Groups (N=7), Where Group (R1); Cinnamon 20%, Group (R2), Ginger 20% And Group (R3), Chlorhexidine Gluconate 0.2 % Mouth Rinse. Each Volunteer Was Given A Piece Of Arabic Gum And Asked To Chew It For One Minute Only, Then Stimulated Saliva Was Collected In Sterilized Screw Capped Bottles. After One Minute, Each Volunteer Was Asked To Rinse With Ten Ml Of The Tested Agent For One Minute Then Expectorate. Stimulated Saliva Was Recollected In The Following Points: After 30 Minute, 1 Hour And 2 Hours. Salivary Samples Were Homogenized By Vortex. 0.1 Ml Of Saliva Transferred To 0.9 Ml Of Sterile Phosphate Buffer Saline (pH 7.0), And Then Ten-fold Dilution Was Performed. From Dilution 10-3 Of Salivary Samples 0.1 Was Taken And Spread In Duplicate On The Mitis Salivarius Bacitracin Agar Media. The Plates Were Incubated Anaerobically For 48 Hours At 37�C Then Aerobically For 24 Hours At Room Temperature. The Number Of Colonies Was Expressed As Colony�forming Units Multiplied By The Dilution Factor Per Milliliter Of Saliva (CFU/ml) And Compared Before And After Rinsing.

Results: Chlorhexidine Demonstrated The Highest Efficacy Than The Other The Two Herbal Plants In Bacterial Reductions But This Was Only Statistically Significant When Comparing The Effect Of Chlorhexidine 0.2% To Ginger 20% Cinnamon 20% Performed Better Than Ginger 20% But The Mean Difference Was Not Statistically Significant. Conclusion: Although The Herbal Extracts Were Less Potent Than Chlorhexidine, Still They Were Relatively Effective In Inhibiting The Growth Of Oral Bacteria. Cinnamon 20% Has More Antibacterial Activity On The Growth Of Streptococcus Mutans Than Ginger 20%.

Ahmed Gamal Khater Ali, Mohamed Galal Gamal Eldin Beheiri, Mostafa Ibrahim Shindy And Samer Abduljabar Noman,

ABSTRACT
Objective: The Purpose Of This Study Is To Evaluate The Clinical And Radiographic Outcomes Of Socket Shield Technique Compared With Conventional Immediate Implant Placement. Patients And Methods: Patients With Remaining Roots In The Esthetic Zone With Intact Periodontal Condition Indicated For Extraction Were Randomly Allocated To One Of Two Study Arms With 1:1 Allocation Ratio By Using Computerized Sequence Generation: The �intervention� Group Whom We Placed Implant With Socket Shield Technique Or The Control Group Whom We Placed Implant By Conventional Immediate Implant Technique

Results: The Maximum Period Of Treatment Will Be Fixed At Nine Months. The Patient Will Be Examined Preoperative And Immediate Postoperative Then Nine Months During The Study Period. Conclusion: From Our Point Of View Socket Shield Technique (SST) Was Considered As One Of Successful Techniques In Preservation Of Alveolar Bone Integrity Specially In Terms Of Minimal Or No Alveolar Bone Loss Which Is Recommended Specially In The Esthetic Zone

Mohamed Seleem Elabd, Magdy Mohamed Ali, Mohamed Medhat Katia, Sherif Farouk Elgayar And Elham A. Hassan,

ABSTRACT
Objective: To Evaluates Histologically Apical Closure Of Autogenously Transplanted Immature Permanent Dog Teeth Treated With 3 Different Revascularization Protocols. Study Design: Sixty Single-rooted Maxillary Incisor Teeth From Ten Healthy Mongrel Dogs Aged 5 Months Were Randomly Divided Into 3 Experimental Groups Of 20 Teeth Each. Group I: Autotransplantation Without Regenerative Endodontic Procedures. Group II: Autotransplantation With Regenerative Endodontic Group III: Autotransplantation After Removing Pulp Tissue From The Apical Side With Regenerative Endodontic. The Animals Were Sacrificed, Histologic Sections Were Prepared And Three Groups Were Evaluated For Apical Closure.

Results: 37.9% Of Teeth Showed Histological Apical Closure, With Significant Differences Between The Three Groups (p=0.008). Group I Showed The Maximal Percentage (66.7 %) Group II The Minimum (20%). When The Experimental Groups Were Compared, There Were Significant Differences Between Groups I And II (p = 0.004), And Groups I And III (p =0.024). While With Group II And III; No Statistical Significant Difference Was Found (p=0.465). Conclusion: These Results Suggest That Autotransplantation Procedures Better Done Without Removal Of The Original Pulp Tissue Or Further Regenerative Endodontic Procedures.

Mirhan Mohamed Khader, Hala Kamal Abdel Gaber And Ahmed Elsayed Hamed Amr,

ABSTRACT


Aim: The Assessment Of Relationship Between Peri-implant Sulcular Fluid (PISF) Cytokines Level (IL-1? &TNF-?) And The Condition Of Peri-implant Tissue In Obese Patients (primary Objective). The Clinical And Radiographic Evaluation Of The Impact Of Obesity On Peri-implant Tissues (secondary Objective).. Subjects And Methods: Twenty Patients Were Included In The Study For Placement Of A Delayed Implant In Lower Molar Area. They Were Divided Into Two Groups, Ten Obese Patients And Ten Normal Weight Patients. TNF-? And IL-1? Were Measured Using ELISA Kits, While Bone Level Measurement Using Cone Beam CT And Clinical Parameters Were Also Assessed.

Results: Regarding Clinical Findings (bleeding Index, Plaque Index, Probing Depth) In Both Groups, In Case Of Intragroup Comparison Wilcoxon Signed Rank Test Was Used And It Revealed No Significance Difference And, In Case Of Intergroup Comparison A Mann Whitney U Test Was Used And It Also Revealed No Significant Difference. Regarding Peri-implant Crestal Bone Changes, The Percent Of Change Throughout The Study In The Obese Group Recorded A Median Of 0.4, While Non-obese Group Recorded A Median Of -0.52. Mann Whitney U Test Revealed That The Difference Between The 2 Groups Was Not Statistically Significant. Regarding Tumor Necrosis Factor, In The First And Second Assessment Independent T Test Revealed That The Difference Between Obese And Non-obese Was Not Statistically Significant. The Percent Change Of TNF-? Values Throughout The Study In The Obese Group Recorded A Median Of -22.61%, While Non-obese Group Recorded A Median Of -32.43%. Mann Whitney U Test Revealed That The Difference Between The 2 Groups Was Not Statistically Significant. Regarding Interleukin 1-?, In The First And Second Assessment Independent T Test Revealed That The Difference Between Obese And Non-obese Was Not Statistically Significant. Conclusion Within The Limitations Of Our Study We Can Conclude That: 1. Obesity Can Exert No Effect On Peri-implant Tissue Status In The Absence Of Dental Plaque. 2. Obesity Can Lead To Slight Elevation In Inflammatory Markers (TNF-? And IL-1?) In Peri-implant Sulcular Fluid Which May Be To A Subclinical Level That Have No Effect On Clinical Parameters Of Gingival Inflammation As Long As Plaque Control Is Applied.