Khaled I Barakat And Diaa El Saied,

ABSTRACT
Temporomandibular Joint Diseases Are Common And One Of The Most Important Methods Of Modern Treatment Are Arthroscopy, Which Many Scientists Since The Use And Until Now Go To Develop In The Techniques Used For It. The Aim Of This Study Is To Confuse The Results Of The Use Of Coblation Devices In The Operations Of TMJ Disc Release. The Study Was Conducted On The Number Of 12 Patients Who Were Diagnosed By Research Diagnostic Criteria For TMJ And Arthroscopic Surgery To Release Disc And Place In Proper Anatomic Position Then Follow Up For 2 Months. Our Results Show That Highly Success Rate 91.6% With Increase In Jaw Function. We Conclude That Coblation Give An Effective Results For Arthroscopic Joint Surgery.

Marco Malak Fayek, Maha Eshak Amer And Ahmed Mohamed Bakry .,

ABSTRACT


Purpose: Evaluate The Prevalence Of Posterior Superior Alveolar Canal By Cone Beam Computed Tomography In A Sample Of Egyptian Population

Materials and Methods: CBCT Radiographs Of 600 Maxillary Sinuses Of 304 Males And 296 Females Patient With Mean Age Of 34.5 Years Were Examined For Presence Or Absence Of The Posterior Superior Alveolar Canal Along The Lateral Wall Of The Maxillary Sinus Among The Sample.

Results: The Posterior Superior Alveolar Canal Could Be Detected In 92% Of The Cases .

Conclusions: Cone-beam Computed Tomography Is Valuable Tool In Evaluation And Localization Of The Posterior Superior Alveolar Canal Before Maxillary Sinus Lift Surgery To Avoid Bleeding During Surgery.

Ibrahim Mohamed Abd Elwahab, Samia Mustafa El Azab, Amr Helmy Moustafa El Bolok And Hanan Eid Gamal .,

ABSTRACT
Background: Curcumin And Nanocurcumin Have Effective Cytotoxic Anticancer Properties And Have Been Used For Treatment Of Variety Of Malignancies. The Aim Of The Current Study Is To Investigate The Effect Of Curcumin And Nanocurcumin On Squamous Cell Carcinoma Cell Line (HEP-2) After 24 Hours. Material& Method: Treatment Of Cell Line (HEp-2) By Different Concentrations Of Curcumin And Nanocurcumin 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 Curcumin Treated Cells (in Relation To Control Cells) Increased From 8.57% To 98.57% As Curcumin Concentration Decreased From 10000mM To 5mM With An IC50 Of 40.However, The Cytotoxic Effect Of Nanocurcumin Treated Cells Increased From 17.08% To 97.84% As Nanocurcumin Concentration Decreased From 10000mM To 5mM With An IC50 Of 77. 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: Curcumin And Nanocurcumin Have A Significant Anticancer Effect On Hep-2 Cell Line.

Alghamdi F, Alhazzazi T , Al-Hazmi N, Naguib G, Sindi A And Bukhary S .,

ABSTRACT


Introduction: This Study Was Carried Out To Investigate The Impressions And Perceptions Of Non-smoking Students Toward The Habit, How They Feel Toward Attempts To Reduce The Effect Of The Habit In School, And How Loved Ones Who Smoke Affect Their Decision To Start The Habit. Methods: At The King Abdulaziz University Faculty Of Dentistry, Questionnaires Were Distributed For Self-administration To 500 Students (250 Male) Who Were In Their 2nd To 7th Year. Response Rate Was 77.2%. Data Analysis Included Simple Descriptive Statistics In The Form Of Percentages, Frequency Distributions, And Bar Graphs; Statistical Significance Was Determined Using Cross Tabulation.

Results: The Prevalence Of Students Who Never Smoked Was 80.8% (31.1% Of Which Were Male). Of Them, 79.2% Stated They Did Not Feel Pressured To Start The Habit. The Primary Reason For Refusing To Smoke Was Health Reasons (46.8%), And 82.1% Were Very Confident In Stating They Will Never Start Smoking. Of These, Many (75%) Were Aware Of The Effects Of Second-hand Smoke, And Of Those, 88.5% Agreed To A Decisive Reduction In Second-hand Smoke Exposure In The School.

Conclusions: Our Findings Suggest That The Perceptions Of Nonsmokers About Abstaining From The Habit Are More Positive Than Those Of Smokers. Nonsmokers Were More Likely Than Smokers To Be Viewed As Having Good Judgment And Were Affected By The Smoking Habits Of Loved Ones.

Mostafa Ali, Salma El-Ashry And Amira Galal .,

ABSTRACT


Aim: The Purpose Of This Study Is To Compare The Apical Extrusion Of Debris Between Reciprocating Single File System WaveOne Gold And Rotational Multi File System Protaper Gold

Materials and Methods: Forty Eight Lower Central Incisors With Single Straight Canal Were Selected To Assess The Apical Extrusion Of Debris After Instrumentation Using Manual File, WaveOne Gold And Protaper Gold. Samples Were Divided Into Three Groups (n=16) According To The Instrument Used For Preparation. The Extruded Debris Was Collected In Preweighted Eppendorf Tube. Data Were Statistically Analyzed Using One-way ANOVA And Tukey?s Post-hoc Test.

Results: The Least Amount Of Debris Were Obtained With WaveOne Gold Instrument. However There Was No Statistically Significant Difference Between WaveOne Gold And Protaper Gold In Apical Extrusion Of Debris. Manual Files Extruded Significantly The Greatest Amount Of Debris. Conclusion: Regardless The Limitations Of This Study, Results Indicate Slight Advantages For WaveOne Gold Reciprocating Single File System Over Protaper Gold Rotational Multi File System In The Amount Of Apically Extruded Debris.

Maram H. Abdelwahab, Nihal E. Sabet And Mohammed M. Nagy,

ABSTRACT


Aim: The Aim Of The Current Study Was To Assess The Concept Of Single File (Wave One-Wave One Gold) Versus Multiple Files (Protaper Universal Retreatment System) In Retreatment Procedure Regards Remaining Filling Material.

Materials and Methods: Forty-five Extracted Human Mandibular Molars With Completely Formed Apices And Root Curvature Ranging From 20-45 Degrees Were Selected From Outpatient Misr International University Clinic Of Surgery Department. Samples With Intact No Visible Cracks Or Fractures Were Selected. Samples Were Digitally Radiographed And Examined For Any Calcifications Or Resorption In Roots. Teeth With Severe Curvature Or Root Caries Were Excluded. Soft Tissue And Calculus Deposits Were Removed Using Ultrasonic Scalers, Then Autoclaved And Stored In 0.2% Thymol. Occlusal Surface Was Flattened By Safe Sided Diamond Discs To Obtain 15mm Working Length. Mesiobuccal Canals Were Prepared With Protaper File System Up To Size F2 Using X Smart Plus Electric Motor According To Manufacture Instruction. At Each Instrument Change Irrigation Was Done With 10 ML Of 2.5% NaOCl Solution Delivered Using Syringe 27-gauge Needle, When Instrumentation Of Root Canal Is Finished, 17% Ethylenediaminetetraacetic Acid (EDTA) Was Used To Remove The Smear Layer And Finally Washed Using Distilled Water (5 ML) So As To Eradicate Solution Used. Final Dryness Was Performed Using Paper Points. All Samples Were Obturated By Gutta-percha Master Cone Size F2 Protaper Guttapercha And Auxillaries #25 And AH Plus Sealer Using Lateral Compaction Technique With Spreader Shorter Than Working Length By 2mm. Samples Were Sectioned Into Two Halves Mesial And Distal, Distal Roots Were Discarded And Mesiobuccal Canal Marked With Blue Marker For Cone Beam Computed Tomography Scanning.

Results: Area Fraction Results Showed That There Was A Statistically Significant Difference Between Groups In Which Wave One Gold Recorded The Highest Area Fraction Followed By Wave One Followed By Protaper Retreatment. Conclusion: The Rotation Motion Proved To Be More Efficient In Retreatment Procedure.

Mohmmed Harris, Magdy Mohammed And Reham Hassan .,

ABSTRACT
The Aim Of The Study Was To Compare Between XP Finisher File, XP Finisher R File And Passive Ultrasonic Irrigation On The Removal Of Smear Layer After Root Canal Retreatment. A Total Of 75 Single Rooted Human Mandibular Premolars Were Decoronized, Instrumented Using I-Race Rotary Files And Filled With Warm Gutta-percha And Total Fill Bioceramic Sealer Using Vertical Condensation Technique. Retreatment Was Performed With D-Race Rotary Files With The Help Of Gutta-percha Solvent. Samples Were Divided Into Three Experimental Groups And Two Control Groups (positive And Negative) After The Removal Of Filling Material According To Irrigation Protocol; Group A(positive Control), Group B(negative Control), Group C(XP Finisher), Group D(XP Finisher R), Group E(Passive Ultrasonic Irrigation) . Samples Were Sectioned Longitudinally And Prepared For Scanning Electron Microscope (SEM) To Evaluate Smear Layer Removal. The Percentages Of Cleaned Canal Walls In Each Third Of The Canal Were Determined Using Image J Software. Data Were Collected And Statistically Analyzed. Results Showed That None Of The Experimental Irrigation Techniques Used Resulted In Complete Canal Cleanliness. However Xp Finisher R File And Xp Finisher Fileshowed Better Cleaning Ability To Remove Smear Layer Compared To Passive Ultrasonic Irrigation In All Thirds Of Each Root Canal.

Radwa A. Dardeer And Mervat I. Fawzy .,

ABSTRACT
Purpose Assessment Of The Surface Roughness Of Root Canal And Its Correlation With Bioceramic Sealer Bond Strength Following Final Irrigation By Chitosan. Material And Methods 50 Extracted Upper Centrals Were Selected And Prepared Using Universal ProTaper Rotary Files And 14 Ml 2.6% NaOCL Then The Samples Were Equally Distributed Into 2 Main Groups (20 Samples Each) Depending On The Type Of The Final Rinse. Group I: 0.2% Chitosan Acetate, Group II: 17 % Ethylenediamine Tetra Acetic Acid (EDTA), Control Group (10 Samples): Sterile Saline. Each Main Group Was Further Equally Distributed Into 2subgroups (10 Samples Each). Subgroup A: For Surface Roughness Evaluation. Subgroup B: For Push Out Bond Strength Evaluation. Surface Roughness Was Evaluated Using Digital Microscope. The Push Out Bond Strength Test Was Carried On Using Universal Testing Machine. The Sealer Penetration Inside The Dentinal Tubules Was Seen Under Scanning Electron Microscope (SEM) In Selected Samples. Results Regarding The Results Of Subgroup A, At All Levels, The Highest Value Of The Average Roughness Deviation (Ra) Was Recorded In Samples Treated With 17% EDTA, While The Lowest Value Was Recorded With The Saline Group And There Was No Statistical Significant Difference Among The Tested Groups. Regarding The Results Of Subgroup B, At All Levels, The Highest Median Push Out Bond Strength Was Recorded In Samples Treated With 17% EDTA, While The Lowest Value Was Recorded With The Saline Group And There Was No Statistical Significant Difference Among The Tested Groups Except At The Apical Levels Where The Difference Statistically Significant Among The Tested Groups. SEM Observation Of Sealer/ Dentin Interface Revealed Few Traces Of Sealer Penetration With Samples Treated With 17% EDTA And 0.2% Chitosan Acetate. Conclusion EDTA 17% As A Final Rinse Produced Higher Value Of Surface Roughness Compared To 0.2% Chitosan Acetate. The Push Out Bond Strength Results Of 0.2% Chitosan Acetate Was Comparable To That Of 17%EDTA When Applicated As A Final Rinse. There Is A Linear Relation Between Ra And The Push Out Bond Strength Of Bioceramic Sealer In Groups I, II.

Amr Ayman Abo El Enin Ahmed Geraldine Ahmed And Randa Al Boghdady .,

ABSTRACT


Introduction: Many Endodontic Instrumentation Techniques Have Been Innovated. However, All Of Them Were Associated With Some Degree Of Debris Extrusion, An Important Cause Of Post-endodontic Pain. This Study Was Designed To Compare The Influence Of Two Different Kinematics Of Rotary Nickel-titanium Instrumentation Systems: Full Rotation Files (ProTaper Next) Versus Reciprocation Files (Reciproc) On The Incidence Of Postoperative Pain After Multiple Visit Endodontic Treatment In Asymptomatic Necrotic Mandibular Molars.

Materials and Methods: Sixty Patients With Asymptomatic Necrotic Mandibular Molars Were Included. After Confirming The Diagnosis Clinically And Radiographically, Patients Were Randomly Assigned Into Two Equal Groups Of 30 Patients Each. Standard Endodontic Treatment Was Performed In Two Visits. The Patients In The Intervention Group Were Treated Using Reciproc Reciprocating Files During Cleaning And Shaping; While ProTaper Next Rotary Files Were Used During Cleaning And Shaping Of Root Canals In Patients Assigned To The Comparator Group. 2.5% Sodium Hypochlorite Was Used For Irrigation And Obturation Was Performed A Week Later Using The Modified Single Cone Technique With A Resin Sealer. Pain Was Assessed Pre-operatively And The Tooth Was Confirmed To Be Asymptomatic, Then After 6, 12, 24 And 48 Hours After Root Canals Instrumentation, And After 6- And 12-hours Following Root Canal Obturation. Numeric Pain Rating Scale (NRS) Was Used As The Primary Outcome Measure. Patients Were Given A Placebo To Be Administered In Case Of Mild Pain And An Analgesic Was Prescribed In Case Of Emergency. All Demographic Data And NRS Scores Were Collected From The Patients And Statistically Analyzed.

Results: Results Showed That, Reciproc Files Caused A Statistically Significant Increase In The Incidence Of Pain After 6- And 12-hours Following Root Canal Instrumentation (P Value= 0.046, 0.042 Respectively). Conclusion: Within The Limitation Of This Study It Was Concluded That Reciproc Files In Reciprocating Motion Increase The Incidence Of Post-operative Pain In The First 12 Hours After Cleaning And Shaping.

Samah Sayed Mehanny , Zeinab Amin Salem And Mohamed Khaled Mohamed Maria,

ABSTRACT
Background: Hepatitis C Virus Is A Main Cause For Liver Disease All Over The World. For Treatment Of Hepatitis C Virus, FDA Approved A New Direct Antiviral Drug, A Nucleoside Analogue, Called Sofosbuvir (Trade Name Is Sovaldi). This Drug Is Capable Of Inhibiting Viral NS5B Protein. Sovaldi Has Manifested Many Side Effects Like Colitis, Oral Ulcers, Headache, Nausea & Vomiting, But The Most Common Side Effect Is Fatigue. Aim : This Study Aimed To Assess The Side Effects Of Sofosbuvir On Masseter Muscles In Albino Rats. It Was Evaluated Histologically And By Measuring Calcium Level.

Materials and Methods: Forty Two Rats Were Divided Into Three Groups, Fourteen Rats Each. Group I: A Control Group, Kept On Normal Diet. Group II And III : Sovaldi Was Administered 40 Mg/kg/day For 30 Days And 60 Days Respectively. At The End Of The Experiment, Rats Were Sacrificed, Masseter Muscles Were Stained With Hematoxylin And Eosin Stain And Calcium Level Was Checked.

Results: Sovaldi Administration For 30 Days Caused Muscle Fiber Clumping, Hyaline Degeneration And Elevation In Intracellular Calcium Level In Masseter Muscles. However, Prolonged Sovaldi Administration (for 60 Days) Caused Adaptive Response Of The Tissue To The Drug.

Conclusions: Sovaldi Administration Caused Structural Changes In Masseter Muscle Fibers That Could Be The Cause Of Fatigue Associated With Sovaldi Treatment Based Regimens