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 ) .
Determination of changes on tooth-colored cervical restorations in vivo using a three-dimensional laser scanning device.
The present study aim ed at the determination of changes of tooth-colored cervical restorations  in vivo using an optical 3-dimensional laser scanning device . The study was performed on 197 cervical restorations placed on incisors , canines , and premolars . Four different tooth-colored restoration material s , a composite , a polyacid-modified resin composite , and two resin-modified glass ionomer cements , were used for the restoration of the lesions . For the determination of changes , images were taken at baseline and 15 , 24 and 36 months after the placement of the fillings using a 3D-laser scanning device . The images were superimposed automatically , and digital subtraction was made by a specially developed image analysis software . The total substance loss on the entire filling surface at 36 months for the resin-modified glass ionomer Photac-Fil was 44 ( + /-23 ) microm , for Fuji II LC 45 ( + /-26 ) microm , for Dyract 71 ( + /-47 ) microm and for Tetric 18 ( + /-12 ) microm . Differentiating between the class of lesion , a higher wear rate was observed at 36 months on restorations which had been placed in erosion/non-carious cervical cavities ( 66 ( + /-33 ) microm ) . In conclusion , the composite material demonstrated a distinctly lower surface wear rate over time in comparison to the resin-modified glass ionomer cements and the polyacid-modified resin composite
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 ) .