GAO Hai1a, CHENG Xiang-rong2, JIANG Li-yi1b(1a.Department of Prosthodontics; 1b.Department of Oral Medicine,Guangdong Province Stomatological Hospital,GuangZhou 510280,China; 2.Department of Prosthodontics,Faculty of Denstistry of Wuhan University,Wuhan
Abstract:Objective To investigate the effect of labial periodontal of PFM crown after clinical tooth preparation used by dental magnifier.Methods Two hundred and thirty three maxillary anterior teeth that were derived from 98 patients were randomly divided into tw