Objective To further investigate the effects of two kinds of porcelain fused to metal crowns(PFM) on the level of aspartate aminotransferase(AST) and alkaline phosphatase(ALP) in gingival crevicular fluid(GCF).

• 目的探讨二种金属烤瓷冠(PFM)对基牙龈沟液(GCF)量、龈沟液中的天冬氨酸转氨酶(AST)和碱性磷酸酶(ALP)水平的影响。