Shaimaa S. El-Desouky, Nagwa A. Ghoname, Hatem E. Ameen And Lubna A. El-Gammal,

ABSTRACT
Background: Dental Age Estimation Is Required In Various Clinical And Scientific Disciplines Including Paediatric Dentistry, Orthodontics, Archaeology, Palaeontology And Forensic Dentistry.
Objectives: This Study Was Performed To Assess The Accuracy Of Willems? Method For Age Estimation In Egyptian Children And Adolescents Based On Degree Of Teeth Development. Methods: Panoramic Radiographs Of 400 Healthy Egyptian Children And Adolescents (200 Boys And 200 Girls) Aged 5 To 15 Years, Were Selected From Outpatient Clinics, Faculty Of Dentistry, Tanta University. Chronological Age For Each Participant Was Calculated By Subtracting Date Of Birth From Date Of Radiograph And The Real Age Was Blinded From The Researcher. All Panoramic Radiographs Were Examined To Determine The Dental Age According To Willems? Method.

Results: This Study Revealed That The Mean Chronological Age For All Participants Was 9.69 Years, While The Mean Estimated Dental Age Was 9.71 Years And The Mean Difference Between The Chronological And Dental Ages (DA-CA) Was 0.02 Years. Conclusion: Willems Method Was An Accurate Method For Age Estimation Among Egyptian Children And Adolescents.

Eman Gamal Abd El Galil, Marwa Ezzat Sabet, Fardos Nabil Rizk And Shaimaa Lotfy Mohamed,

ABSTRACT


Purpose: The Aim Of The Study Was To Compare Between The Accuracy Of Mucosa-supported Stereolithographic Surgical Guide Versus Conventional Surgical Stent In Implant Supported Overdenture.

Materials and Methods: Twelve Patients With Completely Edentulous Patients Were Selected For This Study And Divided Into Three Groups. Group (A): 8 Implants Were Placed In The Mandible Using Conventional Surgical Stents During Implant Insertion. Group (B): 8 Implants Were Placed In The Mandible Using Partially Limiting Mucosa-supported Stereolithographic (SLA) Surgical Guide During Implant Insertion. Group (C): 8 Implants Were Placed In The Mandible Using Completely Limiting Mucosa-supported Stereolithographic (SLA) Surgical Guide During Implant Insertion. CBCT Was Taken Following Implant Insertion To Compare Between The Virtual Implant Location During The Planning And The Post Insertion Implant Location In The Patients? Mouth To Estimate The Occurred Deviation. Numerical Data Were Explored For Normality By Checking The Distribution Of Data. All Data Showed Parametric Distribution. Data Were Presented As Mean And Standard Deviation (SD). One-way Analysis Of Variance (ANOVA) Was Used To Compare Between The Three Groups. Bonferroni?s Post-hoc Test Was Used For Pair-wise Comparisons When ANOVA Test Is Significant.

Results: It Was Found That Group C Of The Patients That Used The Completely Limiting Surgical Guide Was The Most Accurate One With Little Deviation In Implant Placement, Followed By Group B Of The Patients That Used The Partially Limiting Surgical Guide Then The Least Accurate Was For Group A Of The Patients That Used The Conventional Stent. Conclusion: From The Result Obtained From This Study, It Could Be Concluded That The Most Accurate Surgical Guide To Be Used In Implant Placement Is The Completely Limiting Mucosa-supported Stereolithographic Surgical Guide Followed By The Partially Limiting Design Then Conventional Surgical Stent Was The Least Accurate In Implant Placement.

Gehan Fekry Mohammed, Emad Mohamed Tolba, Ahmed Gamal Ahmed Hassan And Shaima?a Ahmed Aly,

ABSTRACT
An In-vitro Study Was Conducted Two Compare Between The Retentive Forces Of Two Different Treatment Modalities For Implant Supported Overdenture. First Treatment Modality Was Ball And Socket Implant Retained Overdenture, While The Second One Was Telescopic Crowns.

Materials and Methods: An Acrylic Resin Model Was Produced From A Commercially Available Mould And Two Identical Implants Were Inserted At The Canine Area Bilaterally. Attachments Were Embedded In Experimental Overdenture Designed To Be Dislodged From The Model By A Universal Testing Machine. A Universal Testing Machine Was Used To Test The Retention Of The Telescopic Crowns And Ball And Socket Systems At The Zero Level (T0) And After 30 , 300 , 600, 1200, 1500, 1800, 2100 Cycles Of Loading ( T1 To T7 Respectively).

Results: In General A Reduction Of Retention Force Magnitude With Time (insertion And Removal Cycles) For Both Types Of Attachments Was Observed. The Values Recorded At T0 Were Significantly Higher Than All Other Values And A Great Reduction Of Retentive Force Occurred With Time. At The Of The Study; The Telescopic Crowns Lost More Than 90% Of The Recorded Forces At Zero Level; While The Ball And Socket Attachments Lost More Than 65% From The Zero Level Retentive Forces. Conclusion: Under The Limitations Of This Study We Can Conclude That: The Retention Force Of Ball And Socket Attachments Are Greater Than Those Of Co-Cr Conus Telescopic Crowns At Any Given Cycle Of Insertion And Removal.

Mai Ali Ahmed Saeid, Nihal Ezzat Sabet And Shaimaa Ismail Gawdat,

ABSTRACT
The Effect Of Occlusal Reduction On Postoperative Pain After Root Canal Instrumentation And Obturation Was Evaluated In This Study; A Randomized Clinical Trial. Methods: Forty-four Patients Complaining From Symptomatic Irreversible Pulpitis With Symptomatic Apical Periodontitis In Posterior Mandibular Teeth Were Included. After Confirming The Diagnosis Clinically And Radiographically, Patients Were Randomly Assigned Into Two Equal Groups Of 22 Patients Each. The Occlusal Surfaces Of Teeth Assigned To The Intervention Group Were Reduced And Absence Of Contact Was Confirmed; While Occlusal Contacts Were Left Intact In Those Assigned To The Control Group. Standard Endodontic Treatment Was Performed In Two Visits Using Rotary Nickel-titanium Files For Shaping, 2.5% Sodium Hypochlorite For Cleaning And Modified Single Cone Technique With Resin Sealer For Obturation. Pain Was Assessed Pre-operatively, Then After 6, 12, 24 And 48 Hours After Root Canals Instrumentation, And After 6 And 12 Hours Following Root Canal Obturation. Visual Analogue Scale (VAS) Was Used As The Primary Outcome Measure. Patients Were Given A Placebo To Be Administrated In Case Of Moderate To Severe Pain And An Analgesic Was Prescribed In Case Of Persistent Pain. All Demographic Data And VAS Scores Were Collected From The Patients And Were Statistically Analyzed.

Results: Results Showed That, There Was A Statistically Significant Decrease In Median Modified VAS Scores Of Preoperative Pain Compared With Post Instrumentation Pain After 6, 12, 24 And 48 Hours In Two Groups. These Results Were Statistically Insignificant Between The 2 Groups. There Was Also No Significant Difference In Incidence Of Analgesic Intake Between The Two Groups. Conclusion: Occlusal Reduction Is Not An Effective Procedure To Reduce Postoperative Pain In Teeth With Symptomatic Irreversible Pulpitis And Symptomatic Apical Periodontitis, Still The Controversy Is Present.

Farah Anas, Manar Fouda And Shaimaa Ismail Gawdat,

ABSTRACT


Introduction: This Study Was Designed As A Prospective, Randomized, Double-blind Clinical Trial To Evaluate The Efficacy Of 2% Mepivacaine With 1:100,000 Epinephrine Versus 4% Articaine With 1:100,000 Epinephrine For Inferior Alveolar Nerve Block (IANB) In Patients With Symptomatic Irreversible Pulpitis In Mandibular Molars. Participants And Methods: Sixty Six Patients Diagnosed With Symptomatic Irreversible Pulpitis In Mandibular Molar Teeth Randomly Received 3.6 ML Of 2% Mepivacaine (2 Carpules) Or 3.4 ML Of 4% Articaine (2 Carpules) Both With 1:100,000 Epinephrine, Using A Conventional IANB Technique. Subject?s Self-reported Pain Response Was Recorded On Numerical Rating Scale (NRS) After Local Anesthetic Administration During Access Preparation And Instrumentation.

Results: For Statistical Analysis The Collected Data Were Subjected To Independent T-test, Chi-square And Fisher?s Exact Showed No Significant Difference In Success Rates Between The Two Groups(P<0.05). Conclusion: For Mandibular Molars With Symptomatic Irreversible Pulpitis The Anesthetic Efficacy Was Similar For Both Mepivacaine And Articaine, And Neither Solution Resulted In Complete Pulpal Anesthesia And Both Groups Showed High Rate Of Need For Supplemental Anesthesia To Control Pain During Treatment.

Sara Mohamed Mahmoud, Khaled Ezzat And Shaimaa Ismail Gawdat,

ABSTRACT
Aims This Prospective, Randomized, Double-blind Clinical Trial Was Aimed To Compare The Efficacy Of 2% Mepivacaine With 1:100,000 Epinephrine To 4% Articaine With 1:100,000 Epinephrine For Inferior Alveolar Nerve Block (IANB) In Patients With Symptomatic Irreversible Pulpitis In Mandibular Molars. Methodology Sixty Six Patients Diagnosed With Symptomatic Irreversible Pulpitis In Mandibular Molar Teeth Were Randomly Allocated To One Of Two Equal Groups To Receive 3.6 ML Of 2% Mepivacaine (2 Carpules) Or 3.4 ML Of 4% Articaine (2 Carpules) Both With 1:100,000 Epinephrine, Using A Conventional IANB Technique. Endodontic Access Cavities Were Prepared 15 Minutes After Solution Deposition, And All Patients Were Required To Have Profound Lip Numbness. Success Was Defined As No Or Mild Pain (numerical Rating Scale Recording) Upon Endodontic Access Cavity Preparation Or Initial Canal Instrumentation And The Patients Who Needed Supplemental Anesthesia Were Counted. Finally, The Collected Data Were Subjected To Independent T-test, Chi-square And Fisher?s Exact Test By Using SPSS Software At A Significant Level Of 0.05. Results The Success Rates For IANB Using Mepivacaine And Articaine Were 30% And 33%, Respectively, Where Both Groups Showed No Statistically Significant Difference. Similarly There Was No Statistically Significant Difference In The Need For Supplemental Anesthesia In Both Groups Conclusion For Mandibular Molars With Symptomatic Irreversible Pulpitis Anesthetic Efficacy Of 2% Mepivacaine Was Similar To That Of 4% Articaine (both With 1:100,000 Epinephrine) In Inferior Alveolar Nerve Blocks And Neither Of Anesthetic Solutions Resulted In Effective Pulpal Anesthesia During Endodontic Treatment.

Mostafa Mohammed Abdul-Baset, Reem Ahmed Lutfy And Shaimaa Ismail Gawdat,

ABSTRACT


Aim:�To Evaluate The Resistance To Fracture Of Root Canals Filled With A New Bioceramic-based System (Smart Paste Bio And Propoints) As Compared To AH Plus And Gutta-percha. Methodology:�Fifty-two Straight Human Single-rooted Extracted Mandibular Second Premolars Were Decoronated To A Length Of 15 Mm. The Specimens Were Prepared By Using The ProTaper Universal System Up To F4 File And Then Randomly Distributed Into Two Experimental (n = 13each) And Two Control Groups (n = 13 Each): Group A (Smart Paste Bio And Propoints PT), Group B (AH Plus Sealer And Gutta-percha), Group C (the Root Canals Were Left Unprepared And Unfilled - Negative Control) And Group D (the Root Canals Were Prepared, But They Were Not Filled ? Positive Control). All Specimens Were Stored At 100% Humidity For One Week To Allow Complete Setting Of The Sealers. The Roots Within Each Group Were Submitted To (1 Mm/min) Compressive Loading Till Fracture. Extracted Data Were Analyzed Statistically By One-way ANOVA Test.

Results: Negative Control Group (C) Showed The Highest Mean Fracture Resistance, However, With �no Statistical Significant Difference Between It And Experimental Groups ( A, B) (P >0 .05). On The Other Hand Positive Control Group (D) Showed The Lowest Mean Fracture Resistance Value Which Was Statistically Significant From All Other Groups (p=0.0022) . Conclusion: Teeth Obturated With The Two Tested Obturation Systems Showed Comparable Fracture Resistance Values That Was Not Statistically Different From The Un-instrumented Roots.

Shaimaa S. El-Desouky, Nagwa A. Ghoname, Hatem E. Ameen And Lubna A. El-Gammal,

ABSTRACT
Background: Dental Age Estimation Is Required In Various Clinical And Scientific Disciplines Including Paediatric Dentistry, Orthodontics, Archaeology, Palaeontology And Forensic Dentistry.
Objectives: This Study Was Performed To Assess The Accuracy Of Willems? Method For Age Estimation In Egyptian Children And Adolescents Based On Degree Of Teeth Development. Methods: Panoramic Radiographs Of 400 Healthy Egyptian Children And Adolescents (200 Boys And 200 Girls) Aged 5 To 15 Years, Were Selected From Outpatient Clinics, Faculty Of Dentistry, Tanta University. Chronological Age For Each Participant Was Calculated By Subtracting Date Of Birth From Date Of Radiograph And The Real Age Was Blinded From The Researcher. All Panoramic Radiographs Were Examined To Determine The Dental Age According To Willems? Method.

Results: This Study Revealed That The Mean Chronological Age For All Participants Was 9.69 Years, While The Mean Estimated Dental Age Was 9.71 Years And The Mean Difference Between The Chronological And Dental Ages (DA-CA) Was 0.02 Years. Conclusion: Willems Method Was An Accurate Method For Age Estimation Among Egyptian Children And Adolescents.

Sovana Tarek Mohamed, Abeer Marzouk And Shaimaa Ismail Gawdat,

ABSTRACT


Aim: The Study Was Designed To Compare The Anesthetic Efficacy Of 2% Mepivacaine With 1:100000 Epinephrine To That Of 4% Articaine With 1:100000 Epinephrine In Inferior Alveolar Nerve Block Injection For Mandibular Molars With Symptomatic Irreversible Pulpitis During Access Cavity Preparation And Root Canal Instrumentation. Methods: Sixty-six Patients With Symptomatic Irreversible Pulpitis In Their Mandibular Molars Were Randomly Allocated To Two Groups Receiving IANB Injection Of Either 2% Mepivacaine With 1:100 000 Epinephrine Or 4% Articaine With 1:100 000 Epinephrine. Root Canal Treatment Was Started At 15-minutes Post Injection In Presence Of Profound Lip Numbness And Completed In A Single Visit. Patients Were Asked To Rate Their Preoperative Pain, Pain During Access Cavity Preparation And Root Canal Instrumentation On A Numerical Rating Scale (NRS).

Results: Anesthetic Success Of The Mepivacaine Group Was (42.4%) While That Of Articaine Was (39.4%). The Difference Between The Two Groups Was Not Statistically Significant (p= 0.802). Conclusion: Anesthetic Efficacy Of 2% Mepivacaine Was Similar To That Of 4% Articaine In Inferior Alveolar Nerve Blocks For Anesthetizing Mandibular Molars With Symptomatic Irreversible Pulpitis.

Amatallah H.N. ALRawhani, Suzan A.W. Amin And Shaima?a I. Gawdat,

ABSTRACT


Aim: The Aim Of This Prospective, Randomized, Double-blind, Clinical Trial Was To Evaluate The Effect Of A Preoperative, Single, Oral Dose Of 50 Mg Diclofenac Potassium (DP) On The Anesthetic Success Of Buccal Infiltration (BI) With 4% Articaine With Epinephrine 1:200,000 In Mandibular Molars With Symptomatic Irreversible Pulpitis (SIP). Methods: Seventy, Endodontic Emergency Patients With SIP Randomly Received Either 50 Mg DP (Diclofenac Group, N=35) Or Placebo (Placebo Group, N=35) Tablets One Hour Before The Initiation Of Endodontic Therapy. Each Patient Received A BI With 4% Articaine With Epinephrine 1:200,000. Intraoperative Pain Intensity And Incidence At The Different Pain Categories (No, Mild, Moderate, Severe) Was Assessed Using Heft-Parker Visual Analogue Scale (HP-VAS). Success Of Anesthesia Was Defined As No-or-mild Pain During Endodontic Treatment. Data Were Statistically Analyzed And The Significance Level (�) Was Set At 0.05.

Results: There Was No Significant Difference Between The Two Groups Regarding The Main Baseline Characteristics Including: Age, Gender, Pre-operative Pain And Canal-number Distribution (p>0.05). Results Showed No Significant Difference Between Both Groups Regarding Intraoperative Pain Intensity, Pain Incidence Or Success Of Anesthesia (p >0.05). Conclusion: Preoperative Administration Of A Single, Oral Dose Of 50 Mg DP Did Not Seem To Affect The Intraoperative Pain And Success Of BI In Mandibular Molars With SIP.