Bai Jie, Qin Man, Zhao Yu-ming
Department of Oral Emergency, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Beijing Da Xue Xue Bao Yi Xue Ban. 2015 Feb 18;47(1):140-4.
To analyze the pulpal prognosis of replanted permanent teeth in children and to examine the associated factors.
The samples consisted of 67 children with 81 avulsed permanent teeth treated in Peking University Hospital of Stomatology from 2000 to 2012. Their clinical data of the replanted teeth were collected, and the follow-up period was no less than 12 months. The pulpal prognosis was classified as pulp necrosis and pulp non-necrosis.
The replantation within 30 minutes after avulsion led to the most significant increase in pulpal healing (P<0.05). The dental pulp of 80% (4/5) young permanent teeth replanted within 30 minutes remained vital, while all the teeth replanted after 30 minutes developed pulp necrosis within 60 days after replantation.
The extra-alveolar period significantly affects the prognosis of pulp in immature permanent teeth after replantation. When the extra-alveolar period is more than 30 minutes, the chance of pulp revascularization after replantation is very low, therefore pulp extirpation should be performed.
分析儿童恒牙再植后的牙髓预后并探讨相关影响因素。
选取2000年至2012年在北京大学口腔医院接受治疗的67例儿童81颗脱位恒牙作为研究对象。收集其再植牙的临床资料，随访时间不少于12个月。牙髓预后分为牙髓坏死和牙髓未坏死。
脱位后30分钟内再植，牙髓愈合情况改善最为显著（P<0.05）。30分钟内再植的年轻恒牙中，80%（4/5）的牙髓保持活力，而30分钟后再植的所有牙齿在再植后60天内均发生牙髓坏死。
脱位时间显著影响年轻恒牙再植后的牙髓预后。当脱位时间超过30分钟时，再植后牙髓血管再生的几率非常低，因此应进行牙髓摘除术。
