摘要
目的 :探讨错牙合类型在正畸治疗中对牙根吸收的影响。方法 :选用 10 8例经方丝弓矫治器固定矫治的病例 ,按Angle分类法分为AngleI、II、III 3个组 ,每组患者治疗前后分别拍摄全口曲面断层片 ,片上的每个牙位的牙根进行配对测量正畸治疗前后牙根等级 ,将牙根等级及其等级改变的频数以计算机进行统计分析。结果 :AngleI、II、III错牙合的病例正畸治疗前后牙根等级分布改变有显著的统计学意义 (P <0 .0 1)。 3个组之间牙根吸收的组间差异表现各不相同 ,且有显著的统计学意义 (P <0 .0 1)。结论 :在正畸治疗中不同错牙合类型对牙根吸收程度有显著的影响。
Objective: To determine the relation between root resorption and different types of malocclusion. Methods: 108 Chinese patients with orthodonctic treatment by fixed Edgewise appliance were divided into three groups according to Angle's types of malocclusion. Paired measurements of root degrees of all visual root shape on panoramic radiographs were taken before and after orthodonctic treatment. Then root resorption and its distribution were analized. Results: Root resorption occurred during orthodontic treatment in each group(P<0.01). In Angle Ⅱgroup grade 3 and 4 root resorption was more than that in Angle I and Angle Ⅲ groups (P<0.01). Conclusion :The type of malocclusion may be one of the important factors which influence root resorption during orthodontic treatment.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2003年第4期336-338,共3页
Journal of Practical Stomatology
关键词
错HE
正畸治疗
牙根吸收
影响
临床研究
Root resorption
Malocclusion
panoramic radiography
Orthodontics
