Comparision of Direct Bonding Technique Versus Indirect Bonding Technique on Bond Failure Rate using Light Cure Adhesive: An In Vivo Study

INTRODUCTION: Bonding of orthodontic attachments may be accomplished by either direct bonding technique or indirect bonding technique. The aim of this study was to compare and evaluate the bond failure rate between both the techniques using light cure adhesive. MATERIALS AND METHODS: A total of thirty patients were assigned to alternating group in a split-mouth design. In group A, the maxillary right & mandibular left quadrants were bonded using direct bonding technique whereas the contralateral quatrants were bonded using indirect bonding technique . In group B, the sides bonded were opposite to those in group A. Modified Thomas indirect bonding technique of using 2mm soft clear vacuum formed thermoplastic sheet and light cured adhesive was used in this study. Observational period of 6 months till leveling & alignment was followed & all loose brackets were recorded according to the group & the bonding technique. RESULTS: Failure rate of brackets bonded with direct bonding technique were 10.5% whereas for indirect bonding technique were 8.8% with no statistically significant difference(p>0.05). CONCLUSION: Both the direct as well as the indirect bonding technique using light cured adhesive had enough bond survival rate with no significant difference and either of the technique can be followed clinically depends on the operators interest