Year : 2015

Volume : Volume 5

Issue : Issue 2

Address for correspondence :
Dr. Suresh Gorantla
sureshg@gmail.com

Abstract

Aim: The present study was conducted to evaluate the effect of chairside light on shear bond strength of stainless steel brackets bonded with light cure composite resins. Materials and Methods: Fifty premolars were randomly divided into 2 groups; Group 1 was bonded in the presence of chair-side light, Group 2 was bonded in the absence of chair-side light. The samples were transferred into saline to simulate the oral environment. After 1 week they were subjected to shear bond strength testing in the occluso-gingival direction using universal testing machine (Instron). Results: The results demonstrated the mean shear bond strength of 6.88±1.37 Mpa for Group 1 and 11.81±0.79 Mpa for Group 2. Analysis of paired T-test determined the statistical difference in the mean shear bond strengths between two groups (p < 0.005).  Conclusion: The shear bond strength of orthodontic brackets bonded with light cure resins in the presence of chair side light showed a statistically significant difference and was lower than those bonded in the absence of chair-side light. However, the bond strength obtained in the presence of chair-side light were within the range required for orthodontic bonding.

Keywords: Sheer bond strength, light cure resins.