24-Month Clinical Performance Evaluation of A Current Glass-lonomer Restorative System

Objective: The aim of this study was to evaluate the 24-month clinical performance of a current glass-ionomer restorative system by comparing with a micro-filled resin composite, on Class II cavities. Methods: Sixty cavities in 26 patients were randomly divided into two groups according to the restorative systems used (n=30); the cavities in Group 1 were restored with a glass-ionomer restorative system (EQUIA/GC); packable glass-ionomer (Fuji IX GP EXTRA/GC)+self-adhesive nano-filled coating (G-Coat PLUS/GC); whereas the ones in Group 2 were restored with a micro-filled composite (Gradia Direct/GC)+a self-etch adhesive (G-Bond/GC). The restorations were evaluated at 1 week (baseline), 6, 12, 18 and 24 months according to the modified USPHS criteria. The data were statistically evaluated by Pearson Chi-Square test (p=0. 05). Results: At 24 month recall, 53 restorations were reviewed in 23 patients. Retention rates, anatomic form, seconder caries, surface texture, post-operative sensitivity and color match were scored as Alpha for all restorations in two groups. Two restorations in Group 1 and 5 restorations in Group 2 were scored as Bravo for marginal discoloration; whereas 4 restorations in Group 1 and 8 restorations in Group 2 were scored as Bravo for marginal adaptation. However, the differences in terms of marginal adaptation and marginal discoloration were not statistically significant (p 0. 05). Conclusions: At the end of 24 months, the clinical performance of glass-ionomer restorative system was as efficacious as the micro-filled composite resin system.