Luxation of permanent teeth due to trauma. A clinical and radiographic follow-up study of 189 injured teeth.
Luxation of permanent teeth due to trauma. A clinical and radiographic follow-up study of 189 injured teeth.
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由于外伤导致恒牙脱位。
DOI：
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发表时间：
1970
期刊：
影响因子：
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通讯作者：
J. Andreasen
中科院分区：
文献类型：
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作者：
J. Andreasen
摘要-本研究对108例患者189颗脱位恒牙进行了临床和放射学随访。观察期1~12年，平均3.4年。对17个临床因素与以下4个因变量之间的关系进行了多因素分析：牙髓坏死、牙髓闭塞、进行性牙根吸收和边缘骨支持丧失。牙髓坏死98颗(52%)，与牙根脱位类型和牙根发育阶段密切相关。有42颗牙齿(22%)出现牙髓闭塞，发现牙髓闭塞与牙根发育阶段、脱位类型和牙冠折断显著相关。进行性外牙根吸收21颗(11%)。脱位的类型、复位和从受伤到治疗的时间间隔被发现与这种并发症显著相关。边缘骨支持丧失18例(10%)，该并发症与脱位类型、受伤至治疗时间、支持骨折断及受伤牙齿数显著相关。
Abstract— The present study is a clinical and radiographic follow-up investigation of 108 patients with 189 luxated permanent teeth. The observation period ranged from 1 to 12 years with a mean of 3.4 years. A multivariate analysis was applied to examine the relationship between 17 clinical factors and the following four dependent variables: pulp necrosis, pulp obliteration, progressive root resorption, and loss of marginal bone support. Pulp necrosis was found in 98 teeth (52%), and this complication was significantly related to the type of luxation and stage of root development. Pulp obliteration was registered in 42 teeth (22%) and found significantly related to the variables stage of root development, type of luxation, and crown fracture. Progressive external root resorption occurred in 21 teeth (11 %). The type of luxation, reduction, and the time interval from injury to treatment was found significantly related to this complication. Loss of marginal bone support was found in 18 instances (10%), and this complication was significantly related to type of luxation, time interval from injury to treatment, fracture of supporting bone, and number of injured teeth.