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

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

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

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

ABSTRACT


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

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

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

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

ABSTRACT


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

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

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

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

ABSTRACT

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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