Aya Omar Tawfik Hussien <br/><br/>
Restoring black triangle with bioclear matrix and injection molding technique versus celluloid conventional matrix method :  A randomized clinical trial /  
 ترميم المثلث الأسود باستخدام المصفوفة الحيوية الشفافة وتقنية الحقن المقولب مقابل طريقة المصفوفة السليلويدية التقليدية :   تجربة سريرية عشوائية / 
By Aya Omar Tawfik Hussien; Under Supervision of  Prof. Dr. Randa Mohamed Hafez, Ass. Prof. Dr. Shereen Hafez Ibrahim, Ass. Prof. Dr. Mona El-sayed Essa  
 - 143 pages :   illustrations ;   25 cm.    CD. 
<br/><br/>Thesis (Ph.D)-Cairo University, 2022. 
<br/><br/>Bibliography: pages130-140. 
<br/><br/> Aim: This clinical trial assessed the bioclear matrix and injection molding technique against <br/>conventional celluloid matrix technique in management of black triangle. Methodology: A <br/>total of 26 participants were randomly divided into two groups (13 participants each) <br/>according to the technique used. In group (A) celluloid conventional matrix method was <br/>used, while in group (B) bioclear matrix with injection molding technique was used. The <br/>different outcomes (Esthetic evaluation, marginal integrity and patient satisfaction) were <br/>evaluated following the FDI criteria by two blinded examiners. The evaluation was done at <br/>baseline (T0) (immediate after restoration); (T6) after 6 months; (T12) after 12 months. <br/>Statistical analysis was done as categorical and ordinal data were presented as frequency and <br/>percentage values. Categorical data were compared using fisher’s exact test. Intergroup <br/>comparisons for ordinal data were analyzed utilizing the Mann-Whitney U test, while <br/>intragroup comparisons were analyzed using Friedman’s test followed by the Nemenyi post <br/>hoc test. The significance level was set at p≤0.05 within all tests, statistical analysis was <br/>performed with R statistical analysis software version 4.1.2 for Windows1. Results: <br/>Regarding proximal anatomical form and esthetic anatomical form, as well as phonetics and <br/>food impaction, all cases in both groups were successful with no statistical significant <br/>difference between groups at p value (p=0.166), (p=0.208).),(p=1),(p=1) respectively. For <br/>the periodontal response, no significant difference between groups (p=1). However, there <br/>was a significant difference between scores measured at different intervals, with T0 being <br/>significantly different from other intervals (p<0.001). Marginal staining revealed that there <br/>was no significant difference between groups (p=1). While, a significant difference between <br/>scores measured at different intervals. Radiographic marginal integrity showed that at all <br/>intervals, there was a significant difference between both groups, however no significant <br/>difference was detected at different intervals (p>0.05). For marginal adaptation, there was a <br/>significant difference between both groups (p<0.05) with no significant difference between <br/>scores measured at different intervals (p>0.05). Conclusions: the restorative management of <br/>the black triangle with both protocols was able to deliver superior aesthetic and good <br/>marginal adaptation; suitable biological properties; with adequate survival time  أجريت هذه الدراسه لتقييم عملية ترميم المثلث الاسود باستخدام مصفوفة بوكلير بتقنية الحقن المقولب مقارنة بطريقة مصفوفة السليويدية التقليدية حيث تم تقسيم المشاركيين عشوائيا الي مجموعتين متساويتين كل مجموعه مكونه من 13 مشارك ثم بعد ذلك تم تقييم اجراء للحالات بعد الترميم مباشرة بعد 6 اشهر و 12 شهراشتمل التقييم على كلا من الشكل التشريحي الجمالي للسنه المرممه الشكل الجانبي للسنه المرممه وتصبغات حواف الحشوة الاستجابه البيولوجيه للثه المحيطه كفاءة حواف الحشوات اكلينيكا وفي الاشعه 
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<br/><br/><br/>Text in English and abstract in Arabic & English. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Restorative and Esthetic Dentistry
<br/><br/><label>Subjects--Index Terms: </label>Black triangle  injection molding technique  restorative  regenerative papilla 
<br/><br/><label>Dewey Class. No.: </label>617.6