Comparison of tensile bond strength of new and recycled orthodontic bracket:- in vitro study

Aim: This study proposes to compare the tensile bond strength of new and recycled orthodontic bracket.
Method: One hundred and twenty extracted premolars were collected for this study. All
the specimen was standardized into two group. Group I was bonded with new orthodontic bracket and group II was bonded with recycled sandblasted bracket. Tensile bond strength of both the groups was recorded using universal testing machine. Results were analysed using unpaired t test.
Results: Tensile bond strength of both group were calculated. Comparison of mean and SD between two groups was done by using unpaired t test to assess whether the mean difference between groups is significant or not. Descriptive statistics of each variable was presented in terms of Mean, standard deviation, standard error of mean. The results showed that tensile bond strength of both the groups were statistically non-significant.
Conclusion: Within the parameters in the study, it can be concluded that tensile bond strength of new orthodontic bracket is comparable and acceptable clinically with tensile bond strength of recycled orthodontic sandblasted bracket.