Conclusion The current best evidence indicates that a glass ionomer cement has a significantly lower risk of loss of a NCCL restoration compared to either a three-step etch- and -rinse or a two-step etch- and -rinse adhesive system ; a three-step etch- and -rinse adhesive system has a significantly lower risk of loss of a NCCL restoration compared to a two-step etch- and -rinse adhesive system .
No significant difference could be observed in the risk of loss of a tooth-colored NCCL restoration between a three-step etch- and -rinse adhesive system and either a two-step self-etch or a one-step self-etch adhesive system
Objectives The aim of this review was to assess the effect of different adhesive systems and tooth preparation on the retention of tooth-colored restorative material s  placed in non-carious cervical lesions ( NCCLs ) .
A 36-month clinical evaluation of ethanol/water and acetone-based etch-and-rinse adhesives in non-carious cervical lesions.
UNLABELLED This double-blind r and omized clinical trial compared different ethanol/water and acetone-based systems in non-carious cervical lesions over 36 months . MATERIAL S AND METHODS Eighty-four patients having at least one non-carious cervical lesion [ NCCL ] under occlusion were enrolled in this study . A total of 84 restorations were placed , half for each group ( Adper Single Bond [ SB ] + FiltekA110 or One Step [ OS ] + MicroNew ) . All the material s were placed by two calibrated operators . Two other independent examiners evaluated the restorations at baseline , 6 , 12 , 18 and 36 months , according to slightly modified USPHS criteria . Statistical analysis between material s in each period was conducted using the Fisher 's exact test ( alpha=0.05 ) , and performance of the material s in the baseline in comparison to each period was evaluated by McNemar 's test ( alpha=0.05 ) . RESULTS The 12- , 18- and 36-month retention rates for SB were 95.2 % ( 12 and 18 months ) and 92.3 % ( 36 months ) . For OS , the retention rates were 83.3 % , 73.8 % and 56.4 % , respectively , for each recall period . After 36 months , 10 OS restorations ( 25.7 % ) and seven SB restorations ( 17.9 % ) were rated as Bravo in the marginal discoloration item . CONCLUSIONS The ethanol/water-based adhesive ( Single Bond ) that was evaluated showed a higher retention rate than the acetone-based system ( One Step ) after 36 months of clinical service
Conclusion The current best evidence indicates that a glass ionomer cement has a significantly lower risk of loss of a NCCL restoration compared to either a three-step etch- and -rinse or a two-step etch- and -rinse adhesive system ; a three-step etch- and -rinse adhesive system has a significantly lower risk of loss of a NCCL restoration compared to a two-step etch- and -rinse adhesive system .
No significant difference could be observed in the risk of loss of a tooth-colored NCCL restoration between a three-step etch- and -rinse adhesive system and either a two-step self-etch or a one-step self-etch adhesive system
Objectives The aim of this review was to assess the effect of different adhesive systems and tooth preparation on the retention of tooth-colored restorative material s  placed in non-carious cervical lesions ( NCCLs ) .