Amal Hassan Zaki Youssef , Nihal Ezzat And Heba El Asfouri ,

ABSTRACT
The Aim Of The Present Study Was To Compare Between Protaper Gold, WaveOne Gold And Protaper Universal Regarding Apically Extruded Debris And Geometric Analysis Including Change In Dentin Thickness, Canal Straightening, Centering Ratio, And Canal Transportation.)

Materials and Methods: A Total Number Of 21 Distal Root Canals Were Selected And Randomly Divided Into Three Groups For Evaluation Of Apical Extrusion Of Debris Using A Modified Version Of The Experimental Model Described By Myers And Montgomery. Root Canals Were Prepared According To The Manufacturer?s Instructions Using Protaper Gold (PTG) For Group I, WaveOne Gold (WOG) For Group II And Protaper Universal (PTU) For Group III. A Total Number Of 63 Mesial Root Canals (mesio-buccal And Mesio-lingual) Were Selected And Randomly Divided Into Three Groups For Evaluation Of Geometric Analysis Using Cone Beam Computed Tomography (CBCT). Root Canals Were Prepared According To The Manufacturer?s Instructions Using Protaper Gold (PTG) For Group I, WaveOne Gold (WOG) For Group II And Protaper Universal (PTU) For Group III. Data Was Statistically Analyzed Using One-way ANOVA And Significance Level Was Set At P < 0.05.

Results: Regarding Evaluation Of Apically Extruded Debris, There Was No Statistically Significant Difference Between Protaper Gold Group And WaveOne Gold Group (P > 0.05). However, There Was Statistically Significant Difference Between Protaper Universal Group And The Other Two Groups (Protaper Gold And WaveOne Gold) (P < 0.05). Regarding Geometric Analysis, There Was No Statistically Significant Difference Between The Three Groups (P < 0.05). Conclusion: Within The Limitation Of The Present Study, It Can Be Concluded That: All The Tested Instruments Showed A Considerable Amount Of Apically Extruded Debris And Failed To Completely Preserve The Geometric Configuration Of The Root Canals.

Shimaa M. Hadwa , Amina M. El Hosary, Amal Kabbash And Ahmed Essa,

ABSTRACT

Objectives: The Present Study Was Conducted To Compare The Histopathological Effects Of Nigella Sativa Oil And Formocresol As Pulpotomy Agents In Primary Teeth.

Materials and Methods: The Present Study Was Carried Out On Twenty-six Primary Teeth That Previously Planned For Serial Extraction. Two Sound Teeth Were Used To Standardize Normal Pulp Structure And Tissue Organization. Twenty ?four Primary Teeth Were Divided Into Two Groups, (twelve Teeth For Each). Pulpotomy Procedures Were Done In Both Groups; Group I Was Treated With Nigella Sativa Oil While Group II Was Treated With Formocresol. Four Teeth From Each Group Were Extracted At (two, Four, And Twelve Week?s Intervals).

Results: Nigella Sativa Oil Showed Significantly Better Results Than Formocresol Regarding Pulp Inflammation, Soft Tissue Organization And Dentin Bridge Formation.

Conclusions: Nigella Sativa Oil Is Associated With Decreased Pulpal Inflammation And More Preservation Of The Odontoblastic Layer With Enhanced Regenerative Tendency Than Formocresol

Ahmed Hassan Omran, Mohamed Farag Ayad And Amany Mohamed Korsel ,

ABSTRACT


Purpose: Study Was Performed To Evaluate The Fracture Resistance Of Flared Root Canals Restored With Hybrid Ceramic Dowel And Core.

Materials and Methods: Two Techniques Were Used For Fabrication Of Dowel And Core. Group I (control), Casted Using Ni-Cr Metal Alloy. Group II (experimental Group), CAD/CAM Using Vita Enamic Hybrid Ceramic. 10 Specimens Were Fabricated Using Each Technique. Complete Cast Crowns Were Used To Restore All Specimens. Specimens Were Fixed In Acrylic Resin Cylinders, Then Positioned In The Mounting Device And Aligned At A 135? Angle With Respect To The Long Axis Of The Root In An Instron Testing Machine. Compressive Load Applied Palatally To All Specimens Till Fracture. Data Were Analyzed And Kolmogorov-Smirnov Test Was Used To Verify The Normality Of Distribution. Student T-test Was Used To Compare The Results Of The Tested Groups At Level Of Significance? 0.05.

Results: There Was A Significant Difference Between The Two Groups (p?0.05). The Results Revealed That Cast Dowel And Core Made From Ni-Cr Metal Alloy Had Higher Fracture Resistance (403.39 ? 60.93 N) Than Dowel And Core Made From Vita Enamic Hybrid Ceramic (240.27?69.12 N). Conclusion: The Difference In Fracture Resistance Results Between The Cast Metal And The Hybrid Ceramics Dowels And Cores Were Significant. The Highest Values Recorded For The Cast Metal Group. The Two Tested Groups Showed Acceptable Fracture Resistance Values Which Can Withstand Normal Adult Occlusion Force Especially In The Anterior Teeth.

Ahmed Mostafa Mohamed Taha, Mostafa Ezz And Mostafa Algangihy,

ABSTRACT
Objective: Evaluation Of The Success Of Immediate Implantation With Closed Sinus Lift In Chronically Infected Maxillary Molar / Premolar Sockets. Patients And Methods: Ten Patients Participated In This Study (5 Males And 5 Females With A Mean Age Of 36 Years) Free Of Any Systemic Diseases That Would Affect Bone Formation, Free Of Chronic Maxillarysinusitis And Were Non-smokers. Each Patient Had At Least One Chronically Infected Maxillary Premolar / Molar Tooth Or Remaining Root With At Least 6mm Bone Height From The Maxillary Sinus Floor.

Results: The Results Showed A Mean Bone Gain Of 3.88 Mm Mesio-distally And 3.9 Mm Bucco-palatally. The Density Of The Newly Formed Bone Was 50% Of The Density Of The Adjacent Alveolar Bone Before Loading Of The Implant. The Overall Success Rate Was 90%. Conclusion: From This Study We Can Conclude That Immediate Implantation With Closed Sinus Lift In A Chronically Infected Posterior Maxillary Tooth Can Be Considered A Reliable And A Predictable Technique.

Abanoub Adeeb Fekry, Ahmed Shawky Hashem, Mohamed Abdelrahman Semieka And Wael Mobarak Refai,

ABSTRACT
This Study Was Conducted On Seven Native Dogs, Each Dog Was Injected By Ethanol Extract Of Propolis. Split Mouth Technique Was Used In Each Maxilla Of The Dogs. The Upper Left Canine Was Injected Sub Mucosal By 1 Ml Of Propolis 500 Mg/l Dissolved In Ethanol, The Right Side Was The Control Side. Two Orthodontic Attachments Were Bonded At The Canine & The Third Molar Of The Same Side, And Connected Together By A NiTi Open Coil Spring. The Distance Between Each Two Attachment Of Each Side Was Measured At Days : 0, 7, 14, 21. Propolis Was Injected Three Times At Days: 0, 7, 14. Sacrificing The Animals Was Done At Day 21 Then Histological Sections From The Canines And Surrounding Alveolar Bone Was Prepared. The Results Showed Non Significant Difference In Orthodontic Tooth Movement Between The 2 Groups. We Concluded That Injection Of Propolis (500mg/l) In Dogs Didn?t Affect The Orthodontic Tooth Movement In Dogs.

Asmaa Abou-Bakr, Nevine H. Kheir El Din, Eman Khalil And Radwa R. Hussein,

ABSTRACT
Chronic Kidney Failure (CRF) Is Becoming A Major Public Health Problem Worldwide Particularly In Developed Countries With A Higher Prevalence Of Renal Disease. Hemodialysis Is The Most Widely Used Treatment Of Nephropathy. Both The Disease And The Treatment Can Inflict Respiratory, Endocrine And Immunological Complications, Which Could Influence The Patient?s Oral Status As Well As Alterations In Salivary Flow And Salivary PH. There Are Guidelines For Oral Health Care In Patients With Systemic Diseases; Additionally, A Significant Improvement In The Underlying Systemic Diseases Has Been Reported Following Treatment Of The Associated Oral Lesions

Materials and Methods: 114 Patients Of Each Gender With Age Vary From 30 To 60 Years Diagnosed With End-stage Renal Disease Undergoing Hemodialysis From Six Months Up To Two Years Were Involved In This Study From The Nephrology Department At Benha University. Patients With A History Of Any Serious Sickness As Malignancy Or Who Undergo Kidney Transplants Or Those That Take Medication That Would Cause Oral Manifestations As Steroids And Smokers Were Excluded In Our Study. Oral Examinations Were Done According To The Modified WHO Oral Health Survey 2013 Criteria. Saliva Was Collected Once Pre-stimulation To Measure The Rate Of Flow And PH.

Results: Oral Changes Were Present In All 114 (100%) CRF Patients. Chronic Periodontitis Was The Most Frequently Seen Disease In (81.6%) CRF Patients. Alternative Findings Were Xerostomia, Burning Mouth, Uremic Breath, Petechial Lesions, Pallor, And Abnormal Pigmentation. In Our Study, We Found An Association Between Xerostomia And Salivary Flow Rate. We Also Found That Patients With Lip Pigmentation Showed Statistically Significantly Low Mean Blood Urea Levels. Conclusion: Many Alterations In The Oral And Salivary Parameters Were Found At The CRF Patients. These Patients Need Special Attention Towards Their Dental Treatment, Not Only Because Of The Disease Itself And Its Multiple Oral Manifestations But Also Because Of The Side-effects And Characteristics Of The Treatments They Receive. The Greater Predominance Of Oral Lesions In CRF Patients Imposes Mandatory Oral Screening To Recognize Patients At Risk. The Management Of Such Will Enhance The Overall Well-being Of CRF Patients In Developed Countries.

Reem Ahmed Hany, Shaymaa I. Habib And Gihan Ali Abdelrahman ,

ABSTRACT


Purpose: The Aim Of This Study Was To Evaluate The Antifungal Effect Of Immersed Acrylic Resin Material In Aqueous Extract Of Siwak Solution On Candida Albicans In Comparison To Distilled Water As A Negative Control Or Sodium Hypochlorite As A Positive Control.

Materials and Methods: One Commercially Available Heat Cured Acrylic Resin; Aqueous Extract Of Siwak And 0.5% Sodium Hypochlorite Were Used In This Study. For Antifungal Evaluation, The Assessment Was Done By Two Techniques; Agar Diffusion Method And Agar Dilution Method. Twenty Seven Specimens (n=9/gp) Were Prepared Using Split Teflon Mold (4?4 Mm) For Each Test. The Specimens Were Randomly Assigned Into Three Groups According To The Type Of The Immersion Solution. Group (I) Aqueous Extract Of Siwak Solution, Group (II) Distilled Water And Group (III) 0.5% Sodium Hypochlorite. The Results Were Statistically Analyzed.

Results: Regarding The Agar Diffusion Method, A Statistically Significant Difference Was Found Between The Antifungal Activities Of The Three Groups. The Highest Mean Antifungal Activity Was Recorded For Group I, Followed By Group III. While The Least Mean Value Was Recorded For Group II. Regarding The Agar Dilution Method In Both Concentrations (1/100 And 1/10), There Was A Statistically Significant Difference Between The Three Investigated Groups. The Highest Candida Count In Colony Forming Units (CFU) Was Recorded For Group II. Meanwhile, The Least Candida Count Was Recorded For Group I. While There Was No Significant Difference Between Group III And Group I.

Conclusions: 1) The Aqueous Extract Of Siwak As A Denture Immersion Solution Has A Potent Antifungal Activity On Candida Albicans. 2) The Aqueous Extract Of Siwak Can Be Safely Applied In Everyday Practice For The Acrylic Dentures Disinfection.

Salma K. Rizk,* Gihan A. Abd Elrahman**, Shaymaa I. Habib*** And Ahmed G. Hegazi****,

ABSTRACT
Objective: This Study Aimed To Evaluate The Effect Of Ethanolic Extract Of Propolis (EEP) Addition On Resin Based Dental Sealant With 10% Concentration As Regard Its Antibacterial Effect On Streptococcus Mutans In Comparison To Fluoride Releasing Sealant And Conventional (fluoride-free) Resin-based Pit And Fissure Sealant. Methodology: A Total Number Of 90 Specimens Were Prepared, Specimens Were Randomly Assigned Into 3 Groups (30 Specimens Per Group). Group I: Resin-based P&F Sealant Containing 10% EEP, Group II: Fluoride Releasing Resin-based P&F Sealant And Group III: Conventional Resin-based P&F Sealant. The Antibacterial Activity Of The Differently Investigated Groups Against Streptococcus Mutans Strain Was Evaluated Using Agar Diffusion Test. This Test Was Conducted After 1,7,14,21 And 30 Days Of Incubation In Artificial Saliva At 37?C To Mimic The Clinical Situation. Data Were Statistically Analyzed. Results Of This Study Showed Statistically Significant Difference Between The Three Investigated Groups After 1, 14, 21and 30 Days. With The Highest Mean Value For The Propolis Containing Group After 1 Day, Followed By The Fluoride Containing Group.

Conclusions: When Propolis Was Added To Resin-based Sealant, A Pronounced Antibacterial Effect Against Streptococcus Mutans Bacteria Was Evidenced.

Bassant M. El-Fiky, Manal A. El-Sheikh And Rasha M. Hatem,

ABSTRACT

Objectives: The Objective Of This Study Was To Determine The Prevalence Of Anterior Open Bite (AOB) In A Group Of Egyptian Children Methods: The Sample Comprised 115 Participant Aged Between 8 And 10 Years From The Outpatients? Clinic Of Pediatric Dentistry And Dental Public Health Department, Faculty Of Dentistry, Cairo University. Anterior Open Bite Was Assessed. Other Variables Examined Were Normal Overbite, Excessive Overbite And Excessive Overjet.

Results: The Results Showed That 71.2% Had Normal Overbite, 7.8% Had Increased Overbite. Overjet Relationship Was Increased In 44.4%. When Data Were Statistically Analyzed, It Was Evident That There Was No Statistical Significantdifference (P-value > 0.05) In Mean (AOB) Between Boys And Girls Throughout The Whole Study Period.

Conclusions: There Was A Slight Difference Of AOB Between Boys And Girls Where It Was Slight Higher In Girls. There Is No Correlation Between Gender And The Presence Of AOB.KEYWORDS: Malocclusion, Open Bite, Overjet, Overbite.

Mariam Salah Mohammad Yassin Alyan*, Fatma Ahmed Hamdy El Shehaby** And Soad Abd El Moniem Abd El Moniem***,

ABSTRACT
Background: Dental Anxiety Is One Of The Major Obstacles That Face The Pediatric Dentist And Interferes With The Delivery Of Optimum Quality Dental Service For Children. That?s Why Pediatric Dentist Should Invest Time And Effort To Control The Children?s Dental Anxiety And Reduce It As Much As Possible Before, During And After The Dental Treatment.

Aim: This Study Was Conducted To Compare Between The Filmedmodelling Technique And The Live Modelling Technique For Management Of Children Dental Anxiety Who Require Simple Fillingto The Primary Molars During Their First Dental Visit Subjects And Methods: A Total Number Of Fiftyfour Children Were Allocated And Randomized Into Three Groups, Eighteen Children In Each Group. In The Firstvisit, Group A The Children Were Subjected To Live Modelling, Group B The Children Were Subjected To Video Modelling And Group C Were Subjected To Tell-Show-Do. In The Second Visit The Children Were Subjected To The Treatment [cavity Preparation And Filling]both The Oxygen Saturation And The Heart Rate Were Measured Using A Pulse Oximeter.

Results: The Results Of The Firstfivequestions Of The Facial Image Scale Showed No Statistical Significantdifference While The 6th Question Showed Statistical Significantdifference. The Heart Rate And Oxygen Saturation Showed No Statistical Significantdifference In Their Results Between The Different Behavior Management Groups. Conclusion: Video Modelling And Live Modelling Are Of Equal Effectiveness In Anxiety Control During The Dental Treatment.