There was insufficient evidence to assess the effect of bonding modality on demineralization rates .
CONCLUSIONS There is weak evidence indicating higher odds of failure with self-etch primer than acid etch over 12 months in orthodontic patients , and there is strong evidence that a self-etch primer is likely to result in a modest time savings ( 8 minutes for full bonding ) compared with acid etch
INTRODUCTION The use of self-etch primers has increased steadily because of their time savings and greater simplicity ; however , overall benefits and potential disadvantages and harms have not been assessed systematic ally .
In this study , we review ed r and omized controlled trials to assess the risk of attachment failure , bonding time , and demineralization adjacent to attachments between 1-stage ( self-etch ) and 2-stage ( acid etch ) bonding in orthodontic patients over a minimum follow-up period of 12 months .
Bond failure rates with a self-etching primer: a randomized controlled trial.
INTRODUCTION The purpose of this clinical trial was to evaluate over a 12-month period the performance of a self-etching system ( SEP ) ( Transbond Plus SEP , 3 M Unitek , Monrovia , Calif ) compared with a conventional multi-step system ( TBXT ) ( Transbond XT , 3 M Unitek ) . METHODS Twenty-eight r and omly selected patients were included in this study . They were r and omly assigned to either the TBXT or the SEP group . A total of 548 brackets were bonded according to the manufacturer 's instructions with Transbond XT adhesive paste ( 3 M Unitek ) . The survival rates of brackets were estimated with the Kaplan-Meier analysis . Bracket survival distributions for bonding procedure , tooth location , dental arch , and patient sex were compared with the log-rank test . RESULTS The failure rates of the TBXT and SEP groups were 4.78 % and 6.88 % , respectively . No significant differences in the survival rates were observed between the bonding procedures ( P = 0.311 ) . When tooth location , dental arch , and sex were analyzed , only tooth location was significant . Posterior brackets were more likely to fail than anterior brackets ( P = 0.013 ) . CONCLUSIONS Both systems had low bond failure rates and are adequate for orthodontic bonding needs
There was insufficient evidence to assess the effect of bonding modality on demineralization rates .
CONCLUSIONS There is weak evidence indicating higher odds of failure with self-etch primer than acid etch over 12 months in orthodontic patients , and there is strong evidence that a self-etch primer is likely to result in a modest time savings ( 8 minutes for full bonding ) compared with acid etch
INTRODUCTION The use of self-etch primers has increased steadily because of their time savings and greater simplicity ; however , overall benefits and potential disadvantages and harms have not been assessed systematic ally .
In this study , we review ed r and omized controlled trials to assess the risk of attachment failure , bonding time , and demineralization adjacent to attachments between 1-stage ( self-etch ) and 2-stage ( acid etch ) bonding in orthodontic patients over a minimum follow-up period of 12 months .