Clinical Evaluation of Ceramic Inlays and Onlays after 2 Years

Objective: the aim of this study was to evaluate the clinical performance of ceramic inlays and onlays made with two systems: sintered (Duceram, Dentsply-Degussa) – D and pressable (IPS Empress, Ivoclar-Vivadent) – IPS, after 2 years. Methods: eighty-six restorations, being 44 IPS and 42 D, were cemented in 35 patients from both sexes, mean age of 35 years. Twenty-seven premolars and 59 molars received class II cavities, totaling 33 onlays and 53 inlays. All restorations were cemented with the dual-resin cement (Variolink II, Ivoclar-Vivadent) and Syntac Classic adhesive, under rubber dam. The evaluations were done by two independent investigators at the baseline, after 1 and 2 years, using the modified USPHS criteria for postoperative sensitivity, secondary caries, fracture, color match, marginal discoloration, marginal integrity and surface texture. Additionally radiographs and slides were made. Results: after two years 100% of the restorations were assessed and all the restorations were considered clinically excellent or acceptable. No fractures or recurrent caries were detected. The results were submitted to the Fisher and McNemar Statistical Tests. Among the analyzed criteria the fallowing received “Bravo” ratings: marginal discoloration – IPS (31.82%); D (23.81%); marginal integrity – IPS (18.18%); D (11.9%); color match – IPS (4.55%); D (9.52%) and surface texture – IPS (2.27%); D (14.29%). No “Charlie” or “Delta” scores were attributed to the restorations. Conclusions: no significant differences were noticed between both ceramics. The estimated survival rate over a period of 2 years was 100%.