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

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.

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.