Shear bond strength of brackets bonded with nanofilled flowable resins

Abstract

Introduction and Objective: To evaluate the shear bond strength of brackets fixed with different materials (two light-cured nanofilled low-viscosity resins -Transbond Supreme LV and Flow Tain LV and two light-cured traditional resins -Transbond XT and Transbond Plus Color Change) after 10 min and 24 h, and to evaluate the type of failure. Material and methods: Eighty bovine incisors were selected and randomly divided into groups (n = 10) according to the material and fixation period. The brackets were bonded following the manufacturer's instructions and stored in deionized water at 37 o C for 10 min or 24 h. After, the specimens were submitted to shear bond strength test at 0.5 mm/min and evaluated for adhesive remnant index (ARI). The data were submitted to Kruskal Wallis and Wilcoxon tests (p < 0.05) and the ARI scores to Chi-Square test. Results: There was a significant difference among the materials (p < 0.05) (after 10 min -Transbond XT > Transbond Plus Color Change > Transbond Supreme LV = Flow Tain LV and after 24 h -Transbond XT > Transbond Plus Color Change = Transbond Supreme LV =

Relative Assessment of Bonding Strength of Orthodontic Adhesives

“…Properties like compressive, tensile, lexural, and shear bond strength were evaluated. Nanocomposite showed excellent physical properties along with high polish and translucency (Correr et al, 2016) .…”