Bond Strength of Stainless Steel Orthodontic Brackets Bonded to Prefabricated Acrylic Teeth. (June 2017)

• Record Type: Journal Article
• Authors: Wan Abdul Razak, Wan Salbiah; Sherriff, Martyn; Bister, Dirk; Seehra, Jadbinder
• Is Part Of: Journal of orthodontics. Volume 44:Number 2(2017)
• Page Start: 105
• Page End: 109
• Publication Date: 2017-06
• Subjects: Bond strength -- acrylic teeth -- pontics -- orthodontic brackets; Orthodontics -- Periodicals; 617.643005
• DOI: 10.1080/14653125.2017.1296636
• Languages: English
• ISSNs: 1465-3125

Abstract

Objectives: The purpose of this in-vitro study was to evaluate the force to debond stainless steel orthodontic brackets bonded to acrylic teeth using different combinations of adhesive and surface treatments. Materials and methods: One hundred prefabricated upper lateral incisor acrylic teeth were divided into 4 equal groups: Transbond XT ® adhesive only (Group 1, control), Transbond XT ® adhesive with sandblasting (Group 2), Transbond XT ® adhesive with abrasion / + methyl methacrylate (MMA) (Group 3) and Triad ® Gel only (Group 4). The force in Newtons (N) to debond the brackets was measured. One-way analysis of variance (ANOVA) and pairwise multi-comparison of means (Šidak's adjustment) were undertaken. Results: The highest force to debond was recorded for Group 2 (275.7 N; SD 89.0) followed by Group 3 (241.9 N; SD 76.0), Group 1 (142.7 N; SD 36.7) and Group 4 (67.9 N; SD 21.1). Significant differences in bond strength measurements between the experimental groups were detected. Mean force values for the groups revealed no significant differences between Group 2 and Group 3 (p>0.05). Conclusions: Both sandblasting and surface abrasion/+ application of methyl methacrylate (MMA) in combination with Transbond XT ® adhesive are recommended for bonding stainless orthodontic brackets to acrylic teeth.