Year : 2016

Volume : Volume 6

Issue : Issue 3

Address for correspondence :
Dr. Amit Byatnal
amitbyatnal@gmail.com

Abstract

Aim:  To establish the difference, if any, between the shear bond strengths of various stainless steel brackets with different mesh size when bonded with self cure composite resin.  Materials and Methods: 90 extracted non carious human premolars were collected, cleaned and stored in the 70% ethyl alcohol. Three commercially available popular brands of stainless steel brackets with different mesh size and commercially available self cure resin were used. 90 extracted human premolar teeth were divided into 3 groups containing 30 teeth each. 30 brackets of each brand were bonded with self cure composite resin. They were stressed under universal testing machine (50KN Hounsfield Tensometer, UK) and the recordings were noted and evaluated statistically. ANOVA test was used to compare the shear bond strength of three bracket types. Results: The mean shear bond strength for 80 mesh is 7.47±2.41 MPa, 100 mesh 8.74±2.41MPa and laser structured brackets is 10.34±2.72 MPa.  Conclusion: The results indicated that the laser structured base brackets (Equilibrium) have bond strength better than that of the simple foil mesh brackets (Minitwin).

Keywords: Bond strength, Mesh size.