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 13-year clinical evaluation of two three-step etch-and-rinse adhesives in non-carious class-V lesions
This 13-year r and omized clinical trial compared the clinical effectiveness of two three-step etch- and -rinse adhesives in combination with a hybrid , stiffer composite versus a micro-filled , more flexible composite . The influence of composite stiffness on the clinical performance of one of the adhesives was assessed as well . One hundred and forty-two non-carious cervical lesions were restored with composites with contrasting stiffness . Seventy-one patients r and omly received two cervical restorations placed following two out of three adhesive procedures : ( 1 ) the three-step etch- and -rinse adhesive Permaquick applied with the stiff micro-hybrid composite Amelogen Hybrid ( PMQ-H , Ultradent ) , ( 2 ) Permaquick applied with the more flexible micro-filled Amelogen Microfill ( PMQ-M , Ultradent ) , or ( 3 ) the “ gold-st and ard ” three-step etch- and -rinse adhesive Optibond FL applied with the micro-hybrid composite Prodigy ( OFL-P , Kerr ) . The restorations were evaluated after 6 months , 1 , 2 , 3 , 5 , 7 , and 13 years of clinical service regarding their retention , marginal integrity and discoloration , caries occurrence , preservation of tooth vitality , and post-operative sensitivity . Retention loss , severe marginal defects , and /or discoloration that needed intervention ( repair or replacement ) and the occurrence of caries were considered as clinical failures . The recall rate at 13 years was 77 % . Bond degradation after 13 years was mainly characterized by a further increase in the presence of small but clinical ly acceptable marginal defects and superficial marginal discoloration . Twelve percent of the OFL-P restorations were clinical ly unacceptable . In the PMQ group , 22 % of the PMQ-M restorations and 26 % of the PMQ-H restorations needed repair or replacement . Regarding the clinical failure rate , Optibond FL scored significantly better than Permaquick ( McNemar ; p = 0.015 ) . No statistically significant differences were found between the micro-filled and the hybrid composite for each of the parameters evaluated ( McNemar , p > 0.05 ) . After 13 years of clinical functioning , the clinical effectiveness of the three adhesive/composite combinations remained highly acceptable
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 ) .