There is not enough evidence to support the bevelled technique over non-bevelled for NCCLs over longer periods of time .
OBJECTIVES To identify if enamel bevelling , compared to no treatment , improves the retention rates and marginal discolouration of cervical composite restorations in non-carious cervical lesions ( NCCLs ) of adult patients , through a systematic review of the literature and meta- analysis .
Clinical performance of a self-etching adhesive at 18 months.
PURPOSE To test the null hypothesis that beveling and /or etching enamel would not affect the 18-month clinical performance of the self-etching adhesive Clearfil SE Bond ( CSEB ) in noncarious cervical lesions ( NCCL ) . METHODS With Institutional Review Board approval , 34 patients were enrolled in this study . A total of 120 NCCL was selected and assigned to four groups : ( 1 ) CSEB was applied without any cavity preparation ; ( 2 ) CSEB was applied after beveling enamel ; ( 3 ) CSEB was applied after etching enamel for 15 seconds with 35 % phosphoric acid ; ( 4 ) CSEB was applied after beveling and etching enamel . A microfilled composite resin was used for all restorations . RESULTS At 6 months after initial placement , 120 restorations ( a 100 % recall rate ) were evaluated . At 18 months , 87 restorations ( a 72.5 % recall rate ) were available for evaluation . A survival rate of 100 % was measured for all groups at both 6 and 18 months . Sensitivity to air decreased significantly only for Group 3 ( no bevel+acid etch ) from baseline to 18 months without statistical changes from 6 months to 18 months . None of the other parameters result ed in significant differences for any of the four groups . However , when data were pooled , both the overall marginal discoloration and the overall marginal adaptation were significantly worse at 18 months than at baseline , while sensitivity to air decreased significantly from baseline to 18 months . The 18-month survival rate of the self-etching adhesive Clearfil SE Bond was not improved by enamel bevel or by enamel etching . Both overall marginal adaptation and overall marginal discoloration were worse at 18 months than at baseline .
There is not enough evidence to support the bevelled technique over non-bevelled for NCCLs over longer periods of time .
OBJECTIVES To identify if enamel bevelling , compared to no treatment , improves the retention rates and marginal discolouration of cervical composite restorations in non-carious cervical lesions ( NCCLs ) of adult patients , through a systematic review of the literature and meta- analysis .