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目的 探讨脱位再植牙牙髓治疗的最佳方法。方法 6 1例 6 7颗再植牙随机分为四组 ,A组 :术前不做牙髓治疗直接再植 ,出现牙髓病变时常规根充。B组 :术前去髓 ,根充碘仿氢氧化钙 ,(Metapaste)半年后常规根充。C组 :术前去髓 ,根充氢氧化钙 ,半年后常规根充。D组 :术前去髓常规根充。结果 当牙脱位时间超过 30分钟后 ,术前牙髓治疗组的疗效显著优于术后牙髓治疗组。术前去髓充入根管过渡性药物氢氧化钙或碘仿氢氧化钙组的疗效显著优于即刻常规根管治疗组。单纯使用氢氧化钙与使用Metapaste做根管过渡性药物 ,二者间疗效无显著性差异。结论 牙脱位时间大于 30分钟后 ,术前去髓 ,先充入氢氧化钙类根管过渡性药物 ,半年后行根充糊剂加牙胶尖永久充填为较理想的牙髓治疗方法
Objective To investigate the best method of endodontic treatment of dislocation replantation. Methods Sixteen replantations of 67 cases were randomly divided into four groups. Group A: replantation was performed without dental pulp before operation, and conventional root filling occurred during pulp lesion. Group B: preoperative to the pulp, root filling iodoform calcium hydroxide, (Metapaste) conventional root filling six months later. Group C: before surgery to the pulp, root filling calcium hydroxide, six months after the conventional root filling. Group D: preoperative regular root filling to the pulp. Results When the tooth dislocation more than 30 minutes, the effect of preoperative pulp treatment group was significantly better than the end of pulp treatment group. The efficacy of premedication to the root canal transitional calcium hydroxide or iodoform-calcium hydroxide group was significantly better than that of the conventional root canal therapy group. There was no significant difference in efficacy between simply using calcium hydroxide and Metapaste as a root canal transitional drug. Conclusion Tooth dislocation time is greater than 30 minutes after surgery, to the pulp before surgery, first filled with calcium hydroxide root canal transitional drug, six months after the root canal paste plus gutta percha filling for the more ideal endodontic treatment