A 2-year Clinical Study of Ceramic Fixed Partial Dentures

Objectives: The objectives of the present prospective study were to evaluate the clinical performance of Denzir ceramic fixed partial dentures (FPDs), and to study the surface changes of the porcelain over time. Methods: Nineteen three-unite Denzir FPDs were inserted in 18 patients, 12 women and 6 men. Ten FPDs were placed in the upper jaw and 9 in the lower jaw. One FPD was an anterior bridge and the remaining FPDs were placed in the premolar/molar region. The FPDs were evaluated independently by two calibrated examiners immediately after and one and two years after insertion using the California Dental Association (CDA) quality evaluation system. At the same time, A-silicone impressions were taken for further surface analysis using confocal laser profilometry. Results: All FPDs were intact at the two-year examination. Of the 19 FPDs the CDA rating Satisfactory was given for 100% of the FPDs at the baseline registration and one and two years after insertion. As for colour parameter, anatomic form and margin integrity, the FPDs were rated excellent immediately, one and two years after inserton. At the baseline registration 67% of the FPDs were rated excellent regarding surface, whereas 33 % were rated slightly rough or pitted on the occlusal surface. However, the number of less favourable surfaces increased over time. Conclusion: The overall impression of the 3-unite Denzir fixed partial dentures was satisfactory after two years in function.