分体制锁式金合金带桩嵌体修复磨牙残冠的临床研究

Restoration of Severe Defective Molar Crown by Fission Braking-lockGolden Alloy Post Inlay

[目的]探讨采用分体制锁式金合金带桩嵌体修复磨牙残冠的修复效果。[方法]从1999年7月至2002年1月间,对13例磨牙残冠牙体缺损患者应用分体制锁式金合金带桩嵌体进行修复。同期18例同等缺损程度应用分段钉嵌体金合金(非制锁式)进行修复。临床观察:主观感觉;口腔检查包括咬合情况、牙周情况、牙体与修复体边缘密合情况;X线片情况。[结果]分体制锁式带桩嵌体组13例中有1例1件1年后脱落,成功率94％。非制锁式分段钉嵌体组18例中有2例7件2年后脱落,成功率74％。两组成功率比较P=0.022。[结论]分体制锁式金合金带桩嵌体修复磨牙残冠成功率高于分段钉嵌体金合金组成功率。

[Objective] To explore the efficacy of fission braking-lock golden alloy post inlay on restoration of severe defective molar crown.[Methods] From July 1999 to January 2002, 13 cases with severe defective molar crown were restored by applying fission braking-lock golden alloy post inlay. In the meantime, 18cases with the same tooth defect were restored by applying fission nail inlay golden alloy (unbraking-lock). The feeling of the patients, margin of prosthesis, secondary caries, retention, occlusion, periodontal condition , and X-ray were observed. [Results] In the groups of 13 cases restored by golden alloy inlay, a piece in 1 case of inlay dropped after one year. The rate of success was 94%. In the groups of 18 cases restored by golden alloy inlay (unbraking-lock), 7 pieces in 2 cases of inlay dropped after two years. The rate of success was 74%. The success rate was significantly different between the two groups, P = 0. 022. [Conclusion] Fission braking-lock golden alloy post inlay is superior to fission nail inlay golden alloy (unbraking-lock) ,and it provides an effective method for restoration of severe defective molar crown and it can be used widely.