Vol. 4, Issue 6, Part A (2018)

Abstract
Ceramic brackets provide better esthetics for orthodontic treatment, but main concern of orthodontic treatment is bond strength and bond strength of ceramic brackets needs to be evaluated. Forty human premolars recently extracted for orthodontic purposes were used in this research divided into two groups. Group I consisting of teeth bonded with metallic brackets and group II consisted of teeth bonded with ceramic brackets. Group I showed a mean shear bond strength of 25.1 Mpa, with standard deviation of ± 6.3 while Group II had a mean shear bond strength of 35.9 Mpa, with standard deviation of ± 12.3.All bond strength values of the brackets used in this study were greater than this minimum requirement and within clinically acceptable ranges. The difference between group I and group II was statically significant. Ceramic brackets showed more bond strength than metallic brackets.