Shi Yan-Li, Mu Yue-Zhao, Zhao Ning, Ge Shao-Hua
Department of Prosthodontics, Shandong Provincial Hospital, Jinan 250021, Shandong Province, China.
Shanghai Kou Qiang Yi Xue. 2005 Feb;14(1):11-3.
To evaluate the short-term effect of gold-plating technique used in Ni-Cr metal ceramic crown in restoring anterior teeth.
64 teeth from 38 cases were divided into two groups. Each group consisted of 32 teeth. All the teeth were restored with Ni-Cr metal ceramic crown. The restorations in group 1 had no treatment while those in group 2 were treated with gold-plating technique in the base metal alloy.Gingiva discoloration, bleeding on probing (BOP), plaque index (PLI) and sulcular bleeding index (SBI) were examined 1 and 12 months after restoration. Chi-square test and Wilcoxon rank sum test were used for statistical analysis.
Gingiva discoloration was found in both groups after bonding. According to the percentage of gingival discoloration, there was no significant difference between group 1 and group 2 (12.5% vs 28.1%) (P>0.05). However, 12 months later, significant difference was found between the two groups (15.6% vs 37.5%)(P<0.05). According to PLI, BOP and SBI, there was no statistical difference between two groups (P>0.05).
Gold-plating was a good method in solving the problem of gingival discoloration in unprecious metal ceramic crown.
评估镍铬金属烤瓷冠中镀金技术在前牙修复中的短期效果。
将38例患者的64颗牙齿分为两组，每组32颗。所有牙齿均采用镍铬金属烤瓷冠修复。第1组修复体不做处理，第2组在贱金属合金基底上采用镀金技术处理。在修复后1个月和12个月检查牙龈变色、探诊出血（BOP）、菌斑指数（PLI）和龈沟出血指数（SBI）。采用卡方检验和Wilcoxon秩和检验进行统计学分析。
粘结后两组均出现牙龈变色。根据牙龈变色的百分比，第1组和第2组之间无显著差异（12.5%对28.1%）（P>0.05）。然而，12个月后，两组之间出现显著差异（15.6%对37.5%）（P<0.05）。根据PLI、BOP和SBI，两组之间无统计学差异（P>0.05）。
镀金是解决非贵金属烤瓷冠牙龈变色问题的一种良好方法。
