贵金属烤瓷与镍铬合金烤瓷修复体的效果评价

Clinical evaluation of the effect of gold alloy and Ni-Cr alloy porcelain fused metal crown restorations

目的:观察比较贵金属烤瓷牙与镍铬合金烤瓷牙的临床修复效果。方法:2004年间,为48例患者制作贵金属烤瓷牙168颗,为另外48例患者制作镍铬合金烤瓷牙179颗。在修复体粘结后即刻以及完成后6个月、1a、2a、3a时复诊,检查修复体的完整性、固位、颜色、颈缘以及牙龈情况。采用SPSS12.0软件包对数据进行秩和检验。结果:修复后即刻检查,贵金属修复组与镍铬合金修复组临床效果良好,而修复后6个月、1a、2a、3a各时间点,2组修复体临床效果总体上比较,贵金属组显著优于镍铬合金组,差异有统计学意义,P<0.05。结论:贵金属烤瓷冠是性能优良的长久性修复体,尤其在颜色方面优于镍铬合金烤瓷冠。

PURPOSE： To observe the clinical effect of gold alloy porcelain fused metal （PFM） crown restoration and NiCr alloy PFM crown restoration. METHODS： A total of 168 teeth from 48 patients were restored with gold alloy PFM crown. The other 48 patients, with a total of 179 teeth were restored with Ni-Cr alloy PFM crown. They were examined in integrality, retention, shade, cervical margin, and gingival health immediately, 6 months, one year , two years ,and three years after restoration. The date was analyzed by rank sum test using SPSS12.0 software package. RESULTS： The clinical effect of Ni-Cr alloy PFM crown was as good as gold alloy PFM crown when checked up after cementation at once. However, when they were examined 6 months, one year, two years ,and three years after restoration, the clinical effect of gold alloy PFM crown group was significantly better than that of Ni-Cr alloy PFM crown, P 〈0.05. CONCLUSION： The gold alloy PFM crown has better properties than Ni-Cr alloy PFM crown as a kind of long-term restoration, especially on the aspect of shade.