Document Details

Document Type : Thesis 
Document Title :
Effect of Silicatization of Bracket Bases and Enamel Surfaces on Shear Bond Strength.
تأثير عملية السيليكاتايزيشن على ميناء الأسنان وقواعد الحاصرات على مقاومة اللصق
 
Subject : Faculty of Dentistry 
Document Language : Arabic 
Abstract : Objectives: This research aims at evaluating orthodontic bracket shear bond strength (SBS) following sandblasting bracket bases and/or enamel surfaces with silica-coated particles. Methods: A total of sixty human premolar teeth were randomly assigned to 4 groups and bonded with metal brackets on both lingual and labial surfaces (n=120). Group 1: control, bonded using the total etching system together with the Transbond XT adhesive resin. Group 2: only bracket bases were sandblasted using CoJet sand (CoJet system, 3M ESPE), coated with silane and then bonded similar to the control group. Group 3: only tooth surfaces were sandblasted with CoJet, treated with silane and then bonded similar to control group. Group 4: both the tooth surface and bracket base were sandblasted with CoJet, treated with silane and then bonded similar to the control. Following storage in saline for 24 hours, the SBS values were measured using an Instron universal testing machine. One-way ANOVA was used for comparisons between the groups. The Adhesive Remnant Index was used to score the teeth following debond. Results: Comparison of the mean SBS in megapascal (MPa) for the control group 1 (22.75), group 2 (25.12), group 3 (21.80), and group 4 (25.11) showed no statistically significant difference between the groups (p>0.05). All groups showed cohesive failures in the resin and adhesive failures at the enamel-adhesive interface except for group 3, which had mixed types of failures. Conclusion: Silicatization of orthodontic metallic bracket bases and/or enamel surfaces did not affect the shear bond strength. However, silicatization of brackets bases significantly affected ARI scores causing less adhesive remnants following debond. 
Supervisor : Dr. Zuhair T. Bakhsh 
Thesis Type : Master Thesis 
Publishing Year : 1438 AH
2017 AD 
Co-Supervisor : Dr. Tariq S. Abuhaimed 
Added Date : Tuesday, February 21, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سحر عبد اللطيف إسماعيلIsmail, Sahar AbdullatifResearcherMaster 

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