Gingival margin aesthetic study of gilded Ni-Cr alloy,Ni-Cr alloy and aurum alloy PFM

REN Yun-Jia, SUN shu-Fen, ZHANG Juan, WANG Wei, ZHENG Lei, WANG Xin-Qiang

Journal of Jilin University(Medicine Edition) . 2010, (4): 753 -757 .