Three Years Report of Alternative Treatments on Defective Restorations

Objectives: This clinical trial aimed to determine alternative treatments for defective Amalgam(AM) and Composite Resin(RBC)  restorations. Methods: 76 patients, aged from 19 to 81, with 300 restorations, AM=193 and RBC=107, Class: I =174, Class II=89, Class III=18, Class IV=6 and Class V=13. Two clinicians (Kappa=0.79) examined the restorations at Baseline(BL), one(1Y), two(2Y) and 3 years(3Y) after treatment. Modified Ryge Criteria was used (marginal adaptation, anatomy, roughness, luster and caries). At (BL) the restorations were randomly assigned to each of the following groups: A: Seal(n=48), B: Refurbish(n=85), C: Repair(n=35), D: Replace(n=43) and E: Untreated as control (n=89). Results: At third year 280 restorations were reevaluated. Alpha assessment for all clinical parameters was at baseline: 70.83%, 1Y: 87.15%, 2Y: 83.65% and 3Y: 75.81%. Between BL and 3Y: 4.98% changed from Bravo to Alpha. The table shows alpha value differences between BL and 3Y after treatment, expressed in percentages. Upgrade to Alpha is expressed as + and Downgrade to Bravo as - .

Conclusions: Alternative treatments for defectives restorations significantly improved the restoration's parameters, increasing their longevity at three years, compared to untreated group.

Study supported by UChile-PRI-ODO-0205 and 3M-ESPE.