CAJ | 학술논문

目的：观察儿童恒牙全脱出后再植牙的牙髓组织预后类型，牙髓坏死出现的时间，分析影响再植牙牙髓组织预后的因素。方法：对2000年至2012年在北京大学口腔医院就诊的儿童恒牙全脱出且观察期大于12个月的病例进行回顾性研究，观察再植牙的牙髓组织预后方式，牙髓坏死、钙变出现的时间，分析影响再植牙预后的相关因素，并进行统计学分析。结果：超过30 min再植的全脱出牙再植后60 d内全部发生了牙髓坏死，且出现牙髓坏死的时间明显早于30 min内再植的全脱出牙（P＜0．05）；30 min内再植的牙齿80％（4／5）牙髓存活，主要表现为牙髓钙变。结论：离体时间会影响再植牙的牙髓组织预后，超过30 min再植的牙齿牙髓几乎没有存活机会，临床上应考虑施行牙髓摘除术。
목적：관찰인동항아전탈출후재식아적아수조직예후류형，아수배사출현적시간，분석영향재식아아수조직예후적인소。방법：대2000년지2012년재북경대학구강의원취진적인동항아전탈출차관찰기대우12개월적병례진행회고성연구，관찰재식아적아수조직예후방식，아수배사、개변출현적시간，분석영향재식아예후적상관인소，병진행통계학분석。결과：초과30 min재식적전탈출아재식후60 d내전부발생료아수배사，차출현아수배사적시간명현조우30 min내재식적전탈출아（P＜0．05）；30 min내재식적아치80％（4／5）아수존활，주요표현위아수개변。결론：리체시간회영향재식아적아수조직예후，초과30 min재식적아치아수궤호몰유존활궤회，림상상응고필시행아수적제술。
Objective:To analyze the pulpal prognosis of replanted permanent teeth in children and to examine the associated factors .Methods:The samples consisted of 67 children with 81 avulsed perma-nent 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 .Results: 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 .Conclusion: The extra-alveolar period significantly affects the prognosis of pulp in immature permanent teeth after replanta-tion.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 .