Effect of an Adhesion Booster on the Bond Strength of New and Recycled Brackets

Abstract

This Study was undertaken to study if adhesion boosters could improve bond strengths of new and recycled orthodontic brackets. Materials and Methods: The sample consisted of one hundred freshly extracted non carious human premolars extracted for orthodontic purpose were divided into four Groups Group-I: New Brackets bonded with no mix adhesive. Group-II: New brackets bonded with no mix adhesive and all bond-2 (an adhesion booster). Group-III: Recycled brackets with no mix adhesive. Group-IV: Recycled brackets with no mix adhesive and all bond-2. Shear bond strength was tested using a Universal Testing Machine (Instron Corp, Figure-4) Results:The mean bond strength of different groups are Group I-10.4470Mpa, Group II-14.2465Mpa, Group III-6.5395Mpa, Group IV-10.2220Mpa. Discussion:There was a significant increase in bond strengths in the groups bonded with all bond-2 compared to groups without all bond-2. The mean bond strength of recycled brackets without all Bond-2 (6.5395 MPa) was significantly lower than the mean bond strength of recycled brackets with all bond-2 (10.22 MPa at P<0.05 level P=0.49635). Conclusion: In order to increase bond strength of recycled brackets, all bond-2 can be used. As the bond strength of recycled brackets with All bond-2 is close to that of new brackets without adhesion boosters, bonding all bond-2 on recycled brackets is as good as bonding new brackets.

Residual Adhesive Removal Methods for Rebonding of Debonded Orthodontic Metal Brackets: Systematic Review and Meta-Analysis

“…In total, 37 studies were examined by full-text reading. Of these studies, 23 were not included in the qualitative analysis: 2 studies evaluated the bond strength to other substrates different than enamel [ 20 , 21 ], 1 study combined several methods for adhesive removal in the same group [ 22 ], and 20 studies performed the rebonding process in the same tooth where the initial bonding process was performed [ 9 , 10 , 12 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ], of the remaining 14 studies, 2 were excluded from the quantitative analysis because the mean and standard deviation was not available [ 40 , 41 ], totalizing 12 studies for the quantitative analysis.…”

A Comparative Study of Shear Debonding Strengh Between New Brackets, Air-Abrasion and Recycled Brackets: An <i>In Vitro</i> Analysis

“…La fuerza de adhesión de los brackets de ortodoncia es de suma importancia y, al mismo tiempo, difícil de pronosticar. Según Harini y Reddy, un 5-7 % sufren fallas de unión debido a deficientes técnicas de adhesión, desprendimiento accidental o la falta de un enlace químico en la interface bracket -adhesivo (13). El desprendimiento de estos aditamentos durante el tratamiento causa molestias en el paciente, además que retrasa y aumenta el costo del mismo (14).…”