IPS Empress inlays luted with a self-adhesive resin cement after 1 year.

Purpose: To prospectively compare the clinical performance of two different resin composites for luting IPS Empress inlays and onlays. Methods: 83 IPS Empress restorations were placed in 30 subjects. All restorations were inserted under rubber dam. 43 inlays/onlays were luted with a self-adhesive resin cement [RelyX Unicem (RX)]. A multistep adhesive (Syntac) was used with Variolink II low viscosity (SV) and served as control (n=40). The restorations were evaluated after 2 weeks: Baseline = 1st recall (R1), after 6 months (R2) and after 1 year (R3) by two calibrated examiners using the modified USPHS criteria. Results: From R1 to R3, one failure was noticed in the SV group (R2) due to marginal enamel chipping. After 1 year of clinical service, SV revealed significantly better results regarding color match and integrity inlay (Mann-Whitney U-test, P 0.05). (Am J Dent 2009;22:55-59). CLINICAL SIGNIFICANCE: The self-adhesive resin composite RelyX Unicem showed clinically acceptable performance after 1 year of clinical service. : Prof. Dr. Roland Frankenberger, Dental Clinic 1 Operative Dentistry and Periodontology, University Medical Center Erlangen, University of Erlangen-Nuremberg, Glueckstrasse 11, D-91054 Erlangen, Germany. E: frankbg@dent.unierlangen.de