The review reached no real conclusion apart from the lack of efforts to clinical ly evaluate the bonding efficiency of a wide range of orthodontic bracket-adhesive systems in terms of debonding force compared to laboratory-based in vitro and ex vivo studies
The aim of this study was to systematic ally review the available studies measuring the bond strength of  orthodontic bracket-adhesive system  under different experimental conditions in vivo .
In vivo debonding strength and enamel damage in two orthodontic debonding methods.
Bracket debonding strength related to diverse debonding methods and enamel damage has not been assessed in vivo . The study hypothetized a direct relationship between these three parameters . Debonding strength was measured clinical ly in the wings method and base method on 50 patients in a split mouth method using a calibrated debonding plier . Brackets from 30 of these patients were scanned in SEM and EDAX for adhesive remnant index and enamel calcium remnants . Base method debonding force was significantly greater than wings method ( 163.5+/-68.7 N , 106.1+/-66.2 N , respectively , p < 0.001 ) . A positive adhesive remnant index score was found in both methods ( 68.7 % , 66.7 % , respectively ) . Debonding strength vs. adhesive remnant index or calcium index scores were not correlated . However , the latter two were significantly correlated ( 0.524 < R < 0.895 , p < 0.031 ) . Half of the debonding failures developed at the adhesive enamel interface . The results warnts the potential of enamel damage during debonding
The review reached no real conclusion apart from the lack of efforts to clinical ly evaluate the bonding efficiency of a wide range of orthodontic bracket-adhesive systems in terms of debonding force compared to laboratory-based in vitro and ex vivo studies
The aim of this study was to systematic ally review the available studies measuring the bond strength of  orthodontic bracket-adhesive system  under different experimental conditions in vivo .