前牙金沉积烤瓷冠修复临床效果观察

Clinical evaluation of the gold galvanized porcelain fused crown

目的探讨金沉积烤瓷冠的临床应用效果。方法临床选择行前牙烤瓷修复的患者96例(共120颗),随机分为3组:金沉积烤瓷冠组、铸造镍铬合金组、铸造金铂合金烤瓷冠组,每组各制作40例。30个月后临床复查,检查临床边缘密合度、颜色、牙龈炎性反应、烤瓷冠的折裂及崩瓷情况。结果金沉积烤瓷冠与金铂合金烤瓷冠边缘密合度接近,均优于镍铬合金烤瓷冠(P<0.05);金沉积烤瓷冠与金铂合金烤瓷冠的颜色均优于镍铬合金烤瓷冠(P<0.05);三者在崩瓷、折裂方面无差异。结论金沉积烤瓷冠具有良好的美观效果,边缘密合度好,抗折强度高。

Objective To investigate the clinical effects of the gold galvanized porcelain fused crown. Methods One hundred and twenty crowns in 96 cases were selected and randomized into three groups, with 40 crows in each group： gold galvanized porcelain fused crown, Ni-Cr alloy casted porcelain fused crown, and gold alloy casted porcelain fused crown. Margin fitness, gingival border color, gingival inflammation and the fracture rate of crown were evaluated and recorded in all patients after 30 months. Results The margin fitness between gold galvanized porcelain fused crown and gold alloy casted porcelain fused crown was not different, but better than that of Ni-Cr alloy casted porcelain fused crown （ P 〈 0. 05 ）. The gingival border color of gold galvanized porcelain fused crown and gold alloy casted porcelain fused crown was also better than that of Ni-Cr alloy casted porcelain fused crown （ P 〈 0. 05 ）. There were no differences among the three kinds of crown in the fracture rate of crown. Conclusion The aesthetic effect, margin fitness and anti-fracture strength are excellent in gold galvanized porcelain fused crown.