Document Details

Document Type : Thesis 
Document Title :
EFFECTS OF 45S5 BIOGLASS AND OPAL SEAL APPLICATION ON THE BONDING OF METAL ORTHODONTIC BRACKETS
تآثير مادتي البايوجلاس و الاوبال سيل على لصق حاصرات التقويم
 
Subject : Faculty of Dentistry 
Document Language : Arabic 
Abstract : Objective: The aim of this investigation was to evaluate and compare the effect of 45S5 Bioglass and Opalseal application on the shear bond strength (SBS) of orthodontic brackets to demineralized and non-demineralized enamel and to analyze the adhesive remnant index (ARI) after debonding the orthodontic brackets. Materials: 120 extracted premolars were randomly divided into 3 equal groups according to the protective agent added before bracket bonding: Bioglass group (BGG), OpalSeal group (OSG) and Control group treated with Transbond XT plus adhesive only (CG). After bonding, half of the specimens in each group was exposed to demineralizing solution and the other half was immersed in artificial saliva. Shear bond strength (MPa) was then tested using the universal testing machine (Instron) and adhesive remnant index (ARI) scores were evaluated. Data were analyzed for descriptive and group comparison using ANOVA at the significance level of p<0.05. Result: The shear bond strength recorded for the three tested groups was within the acceptable range for successful orthodontic clinical application. BGG recorded significantly lower values when compared to the other two groups; OSG (17.3± 3.3MPa), CG (15.3±3.6 MPa) and BGG (12.2±3.2 MPa) p<0.05. However, upon exposing the bonded brackets in all groups to a demineralization challenge only the enamel treated with 45S5 bioglass preserved its bond strength values; OSG (11.5±3.2 MPa), CG (9.4±2.8 MPa) and BGG (10.2±2.2 MPa) p<0.05. The application of OpalSeal and Bioglass didn’t significantly affect the adhesive bond failure. However, demineralization significantly affected the bond of failure of (OSG) and (CG) and insignificantly in (BG). Conclusion: 45S5 bioglass application on enamel prior to orthodontic bracket bonding has the advantage of preserving the durability of orthodontic brackets bond strength exposed to acidic challenge. 
Supervisor : Dr. Mona Aly Abbassy 
Thesis Type : Master Thesis 
Publishing Year : 1440 AH
2019 AD 
Co-Supervisor : Dr. Amal Linjawi 
Added Date : Monday, May 20, 2019 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سمانة محمد المصليAl-musally, Sumanah MohammedResearcherMaster 

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