Department of Dentistry, Show Chwan Hospital, Changhua, Taiwan.
Orthod Craniofac Res. 2011 Aug;14(3):175-80. doi: 10.1111/j.1601-6343.2011.01516.x.
To determine independent predictors of duration of surgical-orthodontic treatment of impacted maxillary central incisors.
The Department of Dentistry at Show Chwan Hospital, Changhua, Taiwan. Eighty patients with unilateral osseous impacted maxillary central incisors receiving a surgical-orthodontic treatment.
This is a retrospective observational study. Treatment duration and its predictors were abstracted from the patients' charts and pre-treatment cephalometric radiographs. Predictors included demographics, crown angle, crown height, crown depth, and root dilacerations.
The mean age of the cohort was 9.2±2.3 years (6.4-20.6 years), and 60% were women. The mean orthodontic traction time was 8.0±4.5 months (2.0-24.1 months). Using multiple linear regression analysis, the independent predictors of treatment duration for an impacted maxillary central incisor were age (β=0.9, p<0.001), crown height (β=-0.2, p<0.05), and root dilacerations (β=3.8, p<0.001).
Duration of surgical-orthodontic treatment of an impacted maxillary central incisor varied widely. Predictors of longer treatment time were older age, high impacted tooth, and dilacerated incisors.
确定上颌中切牙埋伏阻生的手术-正畸治疗时间的独立预测因素。
中国台湾彰化秀传纪念医院牙科。80 名单侧骨性上颌中切牙埋伏阻生接受手术-正畸治疗的患者。
这是一项回顾性观察性研究。从患者的病历和治疗前的头颅侧位片上提取治疗时间及其预测因素。预测因素包括人口统计学因素、冠角、冠高、冠深和根扭转。
队列的平均年龄为 9.2±2.3 岁（6.4-20.6 岁），60%为女性。正畸牵引时间的平均为 8.0±4.5 个月（2.0-24.1 个月）。使用多元线性回归分析，上颌中切牙埋伏阻生的治疗时间的独立预测因素为年龄（β=0.9，p<0.001）、冠高（β=-0.2，p<0.05）和根扭转（β=3.8，p<0.001）。
上颌中切牙埋伏阻生的手术-正畸治疗时间差异很大。治疗时间较长的预测因素是年龄较大、高位埋伏牙和扭转的切牙。
