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目的:比较热牙胶垂直加压充填根管后即刻桩道及延迟桩道预备对纤维桩修复的影响。方法:选择需要根管治疗后行桩核冠修复的残冠173颗牙,分为实验组和对照组。实验组87个牙,行热牙胶充填后即刻桩道预备,对照组86个牙,根充1周后行延迟桩道预备,桩道预备后行石英纤维桩、树脂核、冠修复。术后分别观察1周和2年,对比两组病例的临床疗效。结果:桩核冠修复1周后复诊,术后疼痛发生率实验组4.60%,对照组5.81%;桩核冠修复2年后治疗成功率实验组97.70%,对照组93.02%。结论:即刻桩道预备比延迟桩道预备术后疼痛反应轻,对根充物及根尖封闭性的影响小,临床成功率高。
OBJECTIVE: To compare the effect of post-injection and postponement of post-lapped hot-fill on the repair of fiber post directly after filling with hot-dentin under vertical pressure. Methods: 173 teeth of residual crowns requiring post-core crown restoration after root canal treatment were selected and divided into experimental group and control group. In the experimental group, 87 teeth were implanted with hot gutta-percha dentin immediately after filling, while 86 teeth in the control group were delayed lag after one week of root filling. After the preparation of gutters, quartz fiber piles, resin nuclei and crowns were repaired. After 1 week and 2 years respectively, the curative effect of two groups were compared. Results: Postoperatively, post-core post crown restoration was performed in 4.60% of the experimental group and 5.81% of the control group. The success rate of the two-year post-core crown restoration was 97.70% in the experimental group and 93.02% in the control group. CONCLUSION: The immediate pile preparation has less pain response than the delayed pile preparation, little effect on the root canal filling and apical sealability, and high clinical success rate.