Research Progress on All Ceramic Zirconia Core/Veneer Interface: A Review

The application of veneered zirconia system in clinical has last for few decades due to the excellent aesthetic performance. It was reported in many cases that porcelain delamination occurred in the interface between the zirconia infrastructure and veneer ceramics. There were many works have been carried out to improve the bond strength of interface. Most of the studies focused on the influence factors that affected the longevity of dental restoration. There existed different points of view both in vitro and in vivo . Hence, this review mainly focuses on veneered zirconia system and some interesting controversial findings that may lead to dental restoration failure. Furthermore, it was also found that the next generation of zirconia (such as monolithic zirconia, self-glazed zirconia) have brought the challenge to veneered zirconia system.