One-year clinical evaluation of resin glass ionomer

Objective:This study aimed to evaluate the performance of a resin glass ionomer cement associated to one-bottle etch-and-rinse dentin bonding systems after 1 year performance in non-carious cervical lesions (NCCL). Methods: Thirty-five patients were selected presenting at least 3 NCCLs, totallyzing 110 NCCLs. Only one professional operated all clinical procedures. Under rubber dam isolation cavities were not treated with any mechanical preparation and only a prophylaxis was done before restorations. Cavities were randomly assigned according to the treatment: Group 1 (VP)- Vitremer primer + Vitremer; Group 2 (VSB)- Single Bond + Vitremer; and Group 3 (VPB)- Prime & Bond 2.1 + Vitremer. Two pre-calibrated examiners (Kappa=0.92) assessed the performance of the restorations according to modified USPHS criteria, regarding retention, marginal degradation, marginal staining, caries occurrence and sensibility. Color and superficial texture were also assessed. Data were statistically analyzed with Qui-square and Mcnemar tests (p<0.05). Results: Only one patient did not returned. After 1 year, retention of VP, VSB and VPB restorations were of 92.31%, 87.18% and 84.62% respectively. For all groups, more than 87% were categorized as satisfactory for marginal integrity and more than 94% for marginal discoloration. There was not detected significant superiority of any tested group. No secondary caries or sensibility was assessed after one-year. Color was considered satisfactory and surface texture became rougher. Conclusion: Resin modified glass ionomer associated with different dental adhesives performed successfully after 1-year in non-carious cervical lesions. As retention of the restorations in class V is the most clinical challenge, this study supports the indication of these systems.