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近4年多来笔者收治因牙髓病治疗失败而复诊的患牙共263颗,其中因塑化术和根管治疗术失败的分别为12颗(占4.6％)和3颗(占1.1％)。因干髓术失败的248颗(占94.3％),干髓术失败的原因主要是并发残髓炎(176颗),根尖周炎(44颗),牙折裂(28颗);年龄分布在10～30岁4颗,31～50岁203颗,51～73岁41颗;复诊时间最短9d,最长15年。84％的病牙(207颗)在1/2～2年之间;牙位分布在上后牙137颗,下后牙93颗,上前牙7颗,下前牙11颗。在248颗病牙中除17颗牙因牙体呈冠根纵折无法保留而拔除外,其余牙经改作塑化或根管治疗术及调(牙合)后得以保留。
Nearly 4 years I admitted to treatment of failure due to endodontic treatment referral of a total of 263 teeth, of which due to plastic surgery and root canal therapy failure were 12 (4.6%) and 3 (1.1% ). 248 (94.3%) failed for stemmedomy, and the main reasons for the failure of stemmedomy were 176 cases complicated with pulpitis, 44 cases with periapical periodontitis and 28 cases with tooth fracture. The age distribution 4 at 10 to 30 years old, 203 at 31 to 50 years old and 41 at 51 to 73 years old. The shortest referral time was 9 days and the maximum was 15 years. 84% of the diseased teeth (207) were between 1 and 2 to 2 years old. There were 137 teeth on the posterior teeth, 93 on the posterior teeth, 7 on the anterior teeth and 11 on the anterior teeth. 248 teeth in addition to 17 teeth due to tooth root canopy vertical line can not be retained and removed, the remaining teeth changed plastic surgery or root canal therapy and transfer (occlusion) can be retained.