Document Details

Document Type : Thesis 
Document Title :
An In-vitro Evaluation of Orthodontic Bracket Bonding Using a Self-Adhesive Resin Cement
تقييم لصق حاصرات التقويم باستخدام ذاتية لصق اسمنت الراتنج، في المعمل
 
Subject : Faculty of Dentistry 
Document Language : Arabic 
Abstract : Objectives: This study aimed to investigate the shear bond strength (SBS) of the self-adhesive resin cement, Multilink speed (ML), when used for bonding orthodontic metal brackets, and to evaluate the amount of adhesive left on enamel surface after debonding. Methods: One hundred and twenty human premolar teeth were randomly allocated into four groups according to the bonding materials used for bonding metal brackets on teeth labial surfaces. Group1 (control): traditional total-etch system, Transbond XT. Group2: self-adhesive resin cement (ML). Group3: Bonded with the ML after etching the enamel surface. Group4: Bonded with the ML after sandblasting the enamel surface. Shear bond strength (SBS) testing (in Megapascals) was conducted 24 hours after bonding. Adhesive remnant Index (ARI) scores were obtained under a stereomicroscope. One-way ANOVA test was performed to determine the significance of the findings for the SBS and Kruskal Wallis test was performed for the ARI scores then followed by multiple comparison tests respectively. Results: The Multilink group recorded significantly lower SBS (12.58±4.14) when compared to the conventional adhesive, Transbond XT adhesive (22.38±6.08), (P < 0.05). Modification to the application procedure by etching or sandblasting the tooth surface prior to ML application significantly increased the SBS values; mean SBS was 19.74 MPa±4.27 and 16.25 MPa± 5.52 respectively. Conclusion: The current self-adhesive resin cement (ML) does not provide sufficient bond strength for orthodontic brackets. However, modifications to improve the etching pattern of the material could result in a better material for orthodontic use. On the other hand, sandblasting increased the bond strength of the adhesive but not to the level required for optimum bonding. Further research to enhance the etching capability of the ML is needed. 
Supervisor : Dr. Zuhair Bakhsh 
Thesis Type : Master Thesis 
Publishing Year : 1438 AH
2016 AD 
Co-Supervisor : Prof. Rabab Feteih 
Added Date : Thursday, December 22, 2016 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
رانيا عادل متوليMitwally, Rania AdelResearcherMaster 

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