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 .
A new universal simplified adhesive: 18-month clinical evaluation.
PURPOSE To evaluate the 18-month clinical performance of a multimode adhesive ( Scotchbond Universal Adhesive , SU , 3 M ESPE , St Paul , MN , USA ) in noncarious cervical lesions ( NCCLs ) using two evaluation criteria . MATERIAL S AND METHODS Thirty-nine patients participated in this study . Two-hundred restorations were assigned to four groups : ERm , etch- and -rinse + moist dentin ; ERd , etch- and -rinse + dry dentin ; Set , selective enamel etching ; and SE , self-etch . The composite resin , Filtek Supreme Ultra ( 3 M ESPE ) , was placed incrementally . The restorations were evaluated at baseline , and at 18 months , using both the World Dental Federation ( FDI ) and the United States Public Health Service ( USPHS ) criteria . Statistical analyses were performed using Friedman repeated- measures analysis of variance by rank and McNemar test for significance in each pair ( α=0.05 ) . RESULTS Five restorations ( SE : 3 ; Set : 1 ; and ERm : 1 ) were lost after 18 months ( p>0.05 for either criteria ) . Marginal staining occurred in four and 10 % of the restorations evaluated ( p>0.05 ) , respectively , for USPHS and FDI criteria . Nine restorations were scored as bravo for marginal adaptation using the USPHS criteria and 38 % , 40 % , 36 % , and 44 % for groups ERm , ERd , Set , and SE , respectively , when the FDI criteria were applied ( p>0.05 ) . However , when semiquantitative scores ( or SQUACE ) for marginal adaptation were used , SE result ed in a significantly greater number of restorations , with more than 30 % of the total length of the interface showing marginal discrepancy ( 28 % ) in comparison with the other groups ( 8 % , 6 % , and 8 % , respectively , for ERm , ERd , and Set ) . CONCLUSIONS The clinical retention of the multimode adhesive at 18 months does not depend on the bonding strategy . The only differences between strategies were found for the parameter marginal adaptation , for which the FDI criteria were more sensitive than the USPHS criteria
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 .