三种方法修复后牙牙体缺损的疗效比较

摘要

To compare the clinical effect of posterior tooth-defection restoring with zirconium oxide inlay,cobalt-chromium(co-cr) alloy onlay crown and co-cr porcelain-fused-to-metal(PFM) crown.180 posterior molars with proximal surface defection from 141 patients were randomly divided into three groups, which were restorated by zirconium oxide inlay,co-cr alloy onlay crown and co-cr PFM.The clinical effect of restoration were evaluated after one year.Onlay crown group and crown group showed a statistically significant ance superior to inlay group in prosteses integrity, secondary caries(P<0.05).Onlay group showed a stronger retention force than that of crown group(P<0.05).Crown group and onlay crown group is superior to inlay group in restoring posterior tooth-defection.Onlay group has a better advantage in fracture resistance and could be used in extensive posterior tooth-defection.%比较二氧化锆全瓷嵌体、钴铬合金高嵌体烤瓷冠和钴铬合金烤瓷全冠修复治疗后牙牙体缺损的临床疗效.选择141例累及邻面的后牙牙体缺损牙齿180 颗,随机分成3组,分别制作钴铬合金高嵌体烤瓷冠和钴铬合金烤瓷全冠及二氧化锆全瓷嵌体进行修复,在修复后1年复诊,观察修复效果.高嵌体组和全冠组在修复体完整性、有无继发龋方面与嵌体组比较差异有统计学意义(P<0.05),高嵌体组在固位稳定性上更优于全冠组(P<0.05).后牙牙体缺损的修复治疗,全冠、高嵌体冠优于嵌体修复,而高嵌体冠更有利于固位稳定,更加适用于大面积牙体缺损的修复.