Comparison of chamfer and deep chamfer preparation designs on the fracture resistance of zirconia core restorations

Ezatollah Jalalian, Roghayeh Rostami & Berivan Atashkar
Background and aims. One of the major problems of all-ceramic restorations is their probable fracture under occlusal force. The aim of the present in vitro study was to compare the effect of two marginal designs (chamfer and deep chamfer) on the fracture resistance of all-ceramic restorations, CERCON. Materials and methods. This in vitro study was carried out with single-blind experimental technique. One stainless steel die with 50’ chamfer finish line design (0.8 mm deep) was...