Clinical comparison on restoring posterior teeth with composite resin fillings and indirect resin inlays

Objective To evaluate the clinical performance of resin fillings and inlays in restoring the posterior teeth.Methods 46 posterior teeth were filled with composite resin directly and 50 posterior teeth were restored with indirect resin inlays.Each restoration was evaluated at baseline,after 1 year and 2 years,according to the modified USPHS criteria.Results There was significant difference in marginal discoloration,marginal integrity,secondary carries and wear-resistance between these two groups (P＜0.05).The achievement ratio of direct resin fillings was 72.2％ and the achievement ratio of indirect resin inlays was 91.3％ Conclusion Indirect resin inlays can be suitable for restorations of posterior teeth with more physical property,with less irritation or microleakage. Key words: Composite resin; Inlay; Posterior teeth