摘要
目的：年轻恒牙外伤后，牙髓坏死和牙根吸收在牙齿震荡和牙齿移位中的发生率及发生的时间；牙根的表浅性吸收、置换性吸收、炎症性吸收与外伤类型的关系。方法：从１９８４～１９９６年在北京医科大学附属口腔医院儿科就诊的２０１例前牙外伤后发生牙震荡和牙移位患者的病历资料中选择７９例１５７颗无冠折根折的外伤牙，并且如果有牙松动者使用全牙列垫固位的外伤牙，进行１～１２年的临床回顾性研究。结果：牙髓坏死和牙根吸收在牙齿挫入中发生率最高；牙髓坏死多发生于外伤后３个月内，牙根吸收在外伤后３周到２年均有发生；表浅性吸收在牙齿挫入，牙齿部分脱出，牙齿侧向移位后都可出现；置换性吸收发生于牙齿挫入后；炎症性吸收则发生于牙齿脱出后有牙髓感染的外伤牙。结论：牙齿挫入是最严重的外伤类型。
Objective:To observe the incidence of pulp necrosis and root resorption of the juvenile anterior permanent teeth with concussion and luxation injuries and analyze the relationship between the type of injury and form of root resorption.Methods:157 teeth of 79 patients were choosen from 201 patients with concussion and luxation treated with functional bite plate at the Department of Pedodontics, School of Stomatology, Beijing Medical University from 1984 to 1996.Results:High occurance of pulp necrosis and root resorption were found in teeth with intrusion, and pulp necrosis occured most within 3 months after the injury, while root resorption occured during 3 weeks to 2 years. At the same time, surface resorption occured mainly in the teeth with intrusion, extrusion and lateral luxation, and replacement resorption occured only in intrusive teeth, however inflammatory resorption occured in extrusive teeth whose pulp was infected. Conclusion: Intrusion is the most severe type of tooth trauma.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1999年第1期39-41,共3页
West China Journal of Stomatology
关键词
年轻恒牙
牙齿震荡
牙齿移位
牙髓坏死
牙根吸收
anterior permanent teeth \ \ juvenile\ \ concussion\ \ luxation\ \ pulp necrosis\ \ root resorption
