Survival of avulsed permanent maxillary incisors in children following delayed replantation.
Survival of avulsed permanent maxillary incisors in children following delayed replantation.
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DOI：
10.1111/j.1600-9657.1997.tb00054.x
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发表时间：
1997-12
期刊：
影响因子：
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通讯作者：
E. Barrett;D. Kenny
中科院分区：
文献类型：
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作者：
E. Barrett;D. Kenny
本研究的目的是确定1988年6月至1993年12月期间在加拿大多伦多病童医院进行的延长牙槽外时间后再植门牙的存活率的显著影响变量。生存分析用于识别显著影响再植门牙固位的变量。生存期的定义是指从拔出的门牙再植到最终失去门牙之间的时间。收集了38例患者（男25例，女13例）和52例再植上颌恒切牙的9个变量信息。样本的平均肺泡外持续时间为123分钟。平均随访时间为942天（范围：364-2126天）。与成熟尖牙相比，开放尖牙再植门牙的存活率显著降低（P = 0.04，相对危险度4.2）。此外，使用杜仲胶和封口剂进行根管封闭与生存率的提高也有显著相关性（P = 0.006；相对危险度10.0）。11岁以上儿童再植门牙的存活率有提高的趋势（P = 0.09，相对危险度2.8）。这些结果与以前的研究一致，可以帮助临床医生和家长在处理儿童撕脱牙的决策过程中。
The purpose of this study was to identify the variables that significantly influenced the survival of incisors replanted after extended extra-alveolar duration at The Hospital for Sick Children, Toronto, Canada, between June 1988 and December 1993. Survival analysis was used to identify variables that significantly influence the retention of replanted incisor teeth. Survival was defined as the time that elapsed between the replantation of an avulsed incisor and the time it was finally lost. Information on 9 variables was collected for 38 patients (25 males; 13 females) and 52 replanted permanent maxillary incisors. The mean extra-alveolar duration for the sample was 123 min. The mean follow-up interval was 942 days (range: 364-2126 days). Incisors replanted with open apices had a significantly decreased survival compared with teeth with mature apices (P = 0.04; relative risk 4.2). There was also a significant association between increased survival and obturation of the root canal with gutta-percha and sealer (P = 0.006; relative risk 10.0). A trend towards improved survival of replanted incisors was found for children older than 11 years old at the time of replantation (P = 0.09; relative risk 2.8). These results are consistent with previous studies and may assist clinicians and parents in the decision-making process associated with the management of avulsed teeth in children.