An in vitro study of the fracture strength of tooth preparations for Empress 2 veneers and crowns and mandibular incisors restored with Empress 2 veneers and crowns
WEI Xu1, LI Yan2
1. Dept. of Prosthodontics, Stomatology Hospital Affiliated to Medical School of Nanjing University, Nanjing 210008, China; 2. Dept. of Prosthodontics, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China