Sylvia Sami Melek, Nadia Abbas And Nora Cheta,

ABSTRACT
This Study Aimed To: Evaluate And Compare The Patient Satisfaction And Dimensional Stability Using Digital Caliper In Class III Modification I Maxillary Partially Edentulous Patients Wearing Removable Partial Dentures Constructed From Two Injectable Thermoplastic Materials Polyetheretherketone (PEEK) And Bre.flex (second Edition).

Materials and Methods: Twenty Four Patients Having Kennedy Class III Modification I Maxillary Partially Edentulous Ridges With Fully Dentate Mandibular Arch Were Divided Into Two Equal Groups To Fabricate The Thermoplastic Materials. The First Group Received PEEK Material. The Second Group Received Bre.flex Material. Patient Questionnaires Were Recorded After One Week And After Four Weeks Of The Denture Insertion. The Dimensional Differences From Two Groups Were Measured At Specific Reference Points By Using Digital Caliper: At The Time Of Denture Insertion, After Two Weeks And After Four Weeks Of Denture Insertion. The Collected Data Were Tabulated And Statistically Analyzed.

Results: Showed That The Difference Between The Two Groups Was Statistically Insignificant Regarding Patient Satisfaction. A Statistically Insignificant Difference Was Reported Between Two Groups Regarding Dimensional Accuracy. Conclusion: There Is A Correlation Between The Patient Satisfaction And Dimensional Difference Of The RPD. The Dimensional Stability Is Associated With An Increase In The Patient Satisfaction.

Ghada Ahmed, Fatheya Zahran And Shereen Ali,

ABSTRACT

Objectives: Oral Lichen Planus Is A Common Chronic In?ammatory Mucocutaneous Disease Associated With Cell-mediated Immunological Dysfunction. The Current Study Aimed To Test The Efficacy Of Topical Tacrolimus In Comparison To Triamcinolone Acetonide In Patients Suffering From Oral Lichen Planus. Methods: The Study Included Forty Symptomatic Oral Lichen Planus Patients With Symptomatic Oral Lichen Planus. They Were Randomized Into Two Groups With Allocation Ratio 1:1; Group I Received Topical Triamcinolone Acetonide 0.1% In Orabase (Kenacort?) And Group II Received Topical Tacrolimus 0.03% In Orabase.P Ain And Clinical Improvement Were Assessed Weekly For Four Weeks.

Results: No Statistical Significant Deference Was Detected In Pain Reduction And Clinical Improvement Between Topical Tacrolimus And Triamcinolone Acetonide In Treatment Of Symptomatic Oral Lichen Planus. The Most Common Side-effect In Both Groups Was Temporary Burning Sensation At The Site Of Application. Conclusion: Both Studied Treatment Modalities Exhibited Acceptable Clinical Efficacy In Treatment Of OLP. Topical Tacrolimus Can Be Considered As A Good Alternative Topical Medication In The Treatment Of OLP.

Ahmed Abdel Sattar Abdel Aziz, Ragia Mounir And Ramy Ragab El-Beialy ,

ABSTRACT
Objective: To Assess The Effect Of Posterior Mandibular Ridge Augmentation Using Mineralized Plasmatic Matrix Versus Autogenous Bone Graft On Implant Body Stability: A Randomized Clinical Trial Comparative Study.

Materials and Methods: Twenty Implants Were Placed In Eight Patients With Defective Edentulous Posterior Mandibular Ridge. After Diagnosis Of Each Case Clinically And Radiographically, Patients Were Randomly Assigned Into Two Equal Groups Of 4 Patients Each. After Implant Placement, The Ridges Assigned To The Study Group Received MPM ? Prepared By Centrifugation Of Patient?s Blood- Mixed With Autogenous Bone Graft; While Ridges In The Control Group Received The Gold Standard Of Particulate Aurogenous Bone Graft With High-density PTFE Membrane. Implant Stability Was Assessed In ISQ Unit By Osstell, And Vertical Bone Height Was Assessed By CBCT At 0 And 6 Months. All Demographic Data And ISQ Scores And CBCT Measurements Were Collected And Statistically Analyzed.

Results: Results Showed That, There Was A Statistically Significant Increase In Implant Stability, And Vertical Bone Height After 6 Months In Both Groups (P < 0.05). The Mean Value Of ISQ Scores, Buccal And Lingual Vertical Bone Height In Was Not Statistical Different Between Both Groups Neither At 0 Nor At 6 Months (P > 0.05). The Mean Osstell Gain, Buccal, And Lingual Bone Height In The Study Group Was Significantly Higher Than That In The Control Group (P < 0.05). Conclusion: The Results Suggest That Both Techniques Can Be Used To Improve Implant Stability. The Use Of MPM In Osseous Regeneration And Implant Therapy Have A Positive Impact In The Outcome Of The Grafting Surgery. It Eases And Enhances The Delivery And Homogenization Of The Grafting Materials.

Asmaa A.Desouky, Maged M. Negm And Magdy M.M. Ali,

ABSTRACT
Objectives The Aim Of This Article Is To Evaluate The Sealability Of Experimental Nanosealers (nano Calcium Hydroxide And Nano Bioactive Glass) And To Compare It With The Commercial Zinc Oxide Eugenol Sealer. Methodology Sixty Single-root Human Mandibular Premolars Were Selected And Instrumented With Protaper Ni-Ti Rotary File And The Final File Size Was Up To # F4/.06. They Were Then Randomly Allocated Into 3 Groups, And All Samples Were Filled With Single Cone Gutta-percha (#40/06) And One Of The Tested Sealers. All Specimens Were Tested By Dye Penetration Test To Evaluate The Sealability Of Newly Introduced Nanosealers. Results Significant Improvement Shown By The Presented Study Suggests That Nano Calcium Hydroxide Sealer Showed Significantly Less Dye Leakage Than Nano Bioactive Glass Sealer And Zinc Oxide Eugenol Sealer. Conclusions The Results Of This Study Showed That The Synthesized Nano-powder Sealers Are Suitable For Use In Root Canal Therapy To Prevent Leakage.

Nourhan H. Wahdan, Inas Sami, Gihan H. Waly, Dalia Y. Zaki, Esmat M. Hamzawy,

ABSTRACT
A Range Of Calcium-silicate Based Cements Showed A High Success In Bone Contact Applications Because Of Their Biocompatibility And Bioactivity. Therefore, Silicate-containing Bioactive Materials Are Now Investigated For Bone Tissue Engineering Scaffold Fabrication. This Study Aimed To Fabricate Portland Cement Based Scaffolds Using A Simple And Economic Method. The Prepared Scaffolds Were Fabricated Using Different Concentrations Of Hydrogen Peroxide (10% And 20%) As Porogens With Different Powder/liquid Ratios (2:1, 1.75:1, 1.5:1 And 1.25:1). Results Revealed That 10% Concentration Of Hydrogen Peroxide Produced Scaffolds Of Compressive Strength Within The Range Of That Of Trabecular Bone And Accepted Porosity When The Powder/liquid Ratio Of 2:1 Was Used.

Al-Shaimaa Tarek Ismail, Geraldine M. Ahmed And Sherif El-khodary,

ABSTRACT
The Aim Of The Present Study Was To Evaluate And Compare The Post-operative Pain After Single Visit And Multiple Visit Root Canal Treatment In Asymptomatic Necrotic Mandibular Molars Using OneShape Rotary Instrument After 6, 24, 48 Hours And 7 Days Using Modified Visual Analogue Scale (mVAS).

Materials and Methods: Forty Four Patients With Asymptomatic Non Vital Mandibular Molars Were Included In This Trial. After Confirming The Diagnosis Clinically And Radiographically, Patients Were Randomly Assigned Into Two Equal Groups Of 22 Patients Each. The Single Visit Endodontic Treatment Assigned To The Intervention Group, While Multiple Visit Endodontic Treatment Assigned To The Control Group. Standard Endodontic Treatment Was Performed For Both Groups Using Rotary OneShape Files For Shaping, 2.6% Sodium Hypochlorite For Irrigation And Single Cone Technique With Resin Sealer For Obturation. No Intracanal Medicament Was Used In The Multiple Visits Group.

Results: Results Showed That There Was No Significant Difference In Postoperative Pain (at 6, 24, 48 Hours And 7 Days) Between Single Visit And 1st Visit Of Multiple Visit Groups. But There Was A Significant Difference Between Single Visit And 2nd Visit Of Multiple Visits Group In Postoperative Pain At 6h, 24h And 48 Hours, And There Was No Significant Difference In Postoperative Pain After 7 Days. Conclusion: Within The Limitation Of The Present Study, It Can Be Concluded That: There Is No Statistical Difference In Postoperative Pain (at 6, 24, 48hours And 7 Days) Between Single Visit And 1st Visit Of Multiple Visit Groups. The Incidence And Intensity Of Postoperative Pain In Both Groups Gradually Reduced Over The Study Period. The Highest Prevalence Of Postoperative Pain Was Higher During 24 Hours In Single Visit Group And After 1st Visit In Multiple Visit Group. There Is A Significant Difference Between Single Visit And 2nd Visit Of Multiple Visit Group In Postoperative Pain At 6h, 24h Hours, And There Was No Significant Difference In Postoperative Pain After 48hours And 7 Days.

Eman Saber Bekhit, Neveen Abdel Latife Askar , Nessrine Mohamed Khairy And Omniya Abu El-Dahab,

ABSTRACT


Aim: To Evaluate The Efficacy Of The Bioactivation Of Dental Implant With Platelet Rich Plasma (PRP) For Immediate Loading Implantation Using Periapical Digital Radiography And Clinical Parameters. Methodology: The Present Study Was Conducted On Fourteen Patients (four Males And Ten Females) For Implantation Of 28 Implants .The Ages Ranged From 23 To 56 Years And The Mean Of Ages Was 39.5. They Were All Complaining From Posterior Mandibular Teeth Loss. All Patients Were Subjected To Preoperative CBCT Examination That Was Done By Planmeca ProMax 3D Mid CBCT Unit To Assess Buccal And Lingual Wall Heights And Contours. Insertion Of Platelet Rich Plasma (PRP) Coated Implants And Immediate Loading Of Them Was Performed. After Two Months, Clinical And Radiographic Evaluations Were Performed For The Implants. The Digital Images Were Used To Assess The Implant Height, The Intimate Contact Between Implant And Bone And The Bone Density.

Results: There Was A Statistically Significant Change In The Distribution Of Cases According To Modified Gingival Index In Two Months And Six Months Compared To One Week Between The Two Groups. There Was No Statistically Significance Between The Two Groups At Different Times. Conclusion: The Use Of Platelet Rich Plasma (PRP) Coated Implant Showed Good Results Of Preserving Crestal Bone And Adequate Soft Tissue Healing In Immediate Loading In Restoring Of Posterior Mandibular Teeth.

Marwa Essam EL Dein, Nagla M.H. Nassouhy And Hamdy Abo El Fotooh,

ABSTRACT
Aim Of The Study: To Compare The Retention Of Removable Partial Denture Clasps Made From Thermoplastic Resin Material (acetal And PEEK) And Cobalt Chromium Clasps Using The Universal Testing Machine. Methodology: An Acrylic Resin Model Of Kennedy Class III Was Fabricated To Receive Unilateral Partial Denture Frameworks With Aker Clasps. The Abutments Were Covered With Surveyed Crowns With 0.01 Inch Buccal And Lingual Undercuts. Twelve Partial Denture Frameworks Were Fabricated From Co-Cr, Acetal And PEEK , Four Frameworks Per Group. For Measuring Retention, Universal Testing Machine Was Used, The Vertical Pulling Force Was Applied At The Cross Head Of Speed 0.5 Mm/min Until Disengagement Of The Clasp Occur. The Results Will Be Recorded In Newton On A Computer Display And Printed Out.

Results: A Statistically Significant Difference Was Found Between Co-Cr, Acetal And PEEK Groups Where (p<0.001). A Statistically Significant Difference Was Found Between Co-Cr Group And Each Of Acetal And PEEK Groups Where (p<0.001) Respectively. While No Statistically Significant Difference Was Found Between Acetal And PEEK Groups Where (p=0.992).The Highest Mean Value Of Retention Was Found In Co-Cr Group Followed By PEEK Group, While The Lowest Mean Value Was Found In Acetal Group. Conclusion: Within The Limitations Of This Study, It Was Concluded That The Mean Retentive Force Required To Remove Thermoplastic Clasps (acetal And PEEK) Was Lower Than That Required For Co-Cr Clasps Of The Same Thickness And Engaging 0.01 Inch Undercut.

Mostafa Kamal Abd El Latif, Ibrahim Abd Allah Mohammed, Amany Hussein Nemat And Tarek Ibrahim El Ghareeb ,

ABSTRACT
Objective: The Aim Of This Study Was The Clinical Evaluation Of Intraligamentary Injection Technique Using Computer Controlled Anesthesia ?single Tooth Anesthesia System ?STA? Versus ?Cito-ject ?? Syringe In Extraction Of Posterior Mandibular Teeth. Patients And Methods: One-hundred Patients - 16: 50 Years Old - Were Selected Randomly To Be Included In The Present Study With Different Genders And Extraction Purpose. All Patients Had No Systemic Conditions That May Affect Bleeding And Healing Of Extraction Wounds Or Action Of Anaesthesia And Had At Least Two Mandibular Posterior Teeth In Need To Be Extracted In One Or Both Sides. Each Patient (or His Parent) Signed Consent For Accepting To Be Involved In The Present Study.

Results: The Results Of The Present Study Showed No Significant Difference In Gender, Age And Tooth Type. Moreover The Results Showed That There Was No Significant Difference In Blood Pressure, Heart Rate, Bleeding, Healing And Also In Pain During Injection And Extraction. Moreover, STA System Had Faster Onset Of Anesthesia, Pain After Extraction And Handling..

Ibram Ibrahim, Mona Riad And Mohamed Mostafa ,

ABSTRACT


Aim: The Aim Of This Study Was Evaluate The Effect Of Mechanical Loading Of Resin Composite Bonded To Dentin In Different Levels Using Fluoride Containing And Conventional Non-containing Self-etch Adhesive Systems On Its Bond Strength.

Materials & Methods: A Total Of 40 Teeth Were Used In The Study. The Teeth Were Randomly Divided Into 2 Groups Of 20 Specimens Each (n=20) According To Bonding Material Used, Clearfil? S3 Bond Plus And Clearfil? SE. Each Group Represented The Two Dentin Depth Levels (D), The (D1) Represented Superficial Dentin Level And (D2) Represented Deep Dentin Level. Each Group Was Divided Into 2 Subgroups Of 10 Specimens Each (n=10) According To The Number Of Received Cycles That Represent 24 Hours And 3 Months (T). Adhesive System As Well As Composite Resin Application Were Done According To Manufacturer?s Instructions. Mechanical Aging Was Performed Using Programmable Logic Controlled Equipment (ROBOTA Chewing Simulator). Restored Teeth Were Serially Sectioned To Obtain Beam-shaped Specimens, With A Cross Section Area 1.0mm2. Data Were Analyzed By Kolmogorov?Smirnov Test For Test Of Normality. Three-way ANOVA Was Used To Show The Effect Of Different Adhesive, Cycling And Dentin Depth On Microtensile Bond Strength Followed By Pairwise Comparison With Bonferroni Correction (?=0.05).

Results: Load Cycling And Dentin Level Showed A Significant Effect On Microtensile Bond Strength At P?0.001 And 0.022 Respectively. The Effect Of Fluoride Containing Adhesive On Microtensile Bond Strength Was None Significantly Different From Conventional Adhesive.

Conclusions: Sodium Fluoride Incorporated In The Adhesive System Did Not Hinder Bonding Of Resin Composite To Dentin In Both Superficial And Deep Dentin.