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 ) .
Clinical evaluation of five adhesive systems.
One hundred cervical " abrasion/erosion " lesions were restored in groups of twenty with All-Bond , Photobond , Denthesive , and Pertac dentin adhesives with resin composite , and Geristore resin-based material .  The mean patient age was 63 years . All but seven restoration sites were examined for up to approximately 14 months , and the cumulative retention rates of restorations calculated . At the end of the observation period , the percentage of restorations retained was ; All-Bond 69.6 % , Photobond 78.2 % , Denthesive 42.8 % , Pertac 7.5 % , Geristore 71.8 % , which was in approximate quantitative agreement with laboratory bond strength studies . The relationship of laboratory bond strength tests to clinical performance , and the influence of patient age on the clinical results , are discussed
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 ) .