PATIENT CHARACTERISTICS AND TREATMENT VARIABLES ASSOCIATED WITH APICAL ROOT RESORPTION DURING ORTHODONTIC TREATMENT
PATIENT CHARACTERISTICS AND TREATMENT VARIABLES ASSOCIATED WITH APICAL ROOT RESORPTION DURING ORTHODONTIC TREATMENT
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DOI：
10.1016/s0889-5406(05)81678-6
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发表时间：
1991-01-01
影响因子：
3
通讯作者：
LINGE, BO
中科院分区：
文献类型：
--
作者：
LINGE, L;LINGE, BO
以每位患者单侧上颌切牙最大根尖吸收量为因变量，对患者特征和临床变量进行多变量分析。通过标准化口内x线片测量了485例连续治疗患者的牙根长度，患者年龄为11.5至25岁。相关矩阵显示6个预处理变量和7个治疗变量之间存在复杂的正相关和负相关模式。对根尖吸收有显著影响的变量包括：复盖、治疗前上颌门牙外伤史、使用矩形弓丝治疗时间、使用ⅱ类弹性材料治疗时间、唇舌功能障碍和/或7岁以上吸吮手指习惯的历史，以及是否需要矫正上颌正畸。开放式激活器的临床应用与覆盖显著相关，但与根尖吸收、使用矩形弓丝和/或ii类弹性物以及总带带时间负相关。
Multivariate analysis of patient characteristics and clinical variables was carried out with the maximum single maxillary incisor apical root resorption for each patient as the dependent variable. Root lengths were measured in standardized intraoral radiographs from 485 consecutively treated patients, 11.5 to 25 years of age. The correlation matrix revealed a complex pattern of positive and negative associations between the six pretreatment and seven treatment variables. Variables found to contribute significantly to apical root resorption were overjet, history of trauma to maxillary incisors before initiation of treatment, time of treatment with rectangular arch wires, time of treatment with Class ll elastics, lip/tongue dysfunction, and/or history of finger-sucking habits persisting beyond the age of 7 years, and impacted maxillary canines to be corrected orthodontically. Clinical application of an open activator was significantly correlated with overjet but negatively correlated with apical root resorption, with the use of rectangular arch wires and/or Class ll elastics, and with total banding time.