[Long-term clinical results of VITA In-Ceram Classic: a systematic review]

VITA In-Ceram Classic is a system to fabricate all-ceramic crowns and fixed partial dentures (FPDs) with a glass-infiltrated aluminium oxide core material. This systematic review gives an overview of the clinical performance of the In-Ceram Classic types Alumina, Spinell and Zirconia. Based on a systematic literature research, an evidence-based selection and assessment of clinical studies of In-Ceram Classic ceramics was carried out. A total of 294 publications were found, 21 of which conformed to the inclusion criteria. Only few meaningful studies of In-Ceram Alumina FPDs and In-Ceram Zirconia crowns and FPDs were found. The Five-year survival rate of In-Ceram Alumina crowns and In-Ceram Spinell crowns ranging from 91.7% to 100% is similar to the survival rate of conventional metal-ceramic crowns. The Five-year survival rate of single-retainer In-Ceram Alumina resin-bonded fixed partial dentures (RBFPDs) was 92.3%, and thus higher than that of two-retainer RBFPDs. In-Ceram Classic Alumina can be recommended for anterior and posterior crowns as well as for anterior single-retainer RBFPDs. In-Ceram Classic Spinell can be recommended for anterior crowns. Further studies have to be initiated in order to evaluate in detail the clinical performance of VITA In-Ceram Classic.