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本研究是为了探讨成人正畸患者根尖吸收的有关 危险因素。共检查了完成治疗的343例成年患者。治疗前后均摄标准的上前牙根尖X线片和头测量片。用多元线性回归方法进行统计分析。 材料和方法 343例患者,治疗前年龄20～70.1岁(平均34.5±9.0岁)。治疗时间0.6～5.2年(平均2±0.7年)。将治疗前的错(牙合)畸形用安氏分类法分类,同时记录其持续到8岁以后的不良习惯、牙及面部是否
The purpose of this study was to investigate the risk factors associated with root resorption in adult orthodontic patients. A total of 343 adult patients who completed the treatment were examined. Before and after treatment were taken standard upper anterior root tip radiographs and head measurement tablets. Multiple linear regression method for statistical analysis. Materials and Methods A total of 343 patients aged 20-70.1 years (mean 34.5 ± 9.0 years) before treatment. Treatment time 0.6 ~ 5.2 years (mean 2 ± 0.7 years). The treatment of malocclusion before classification using Angle classification, while recording its continued until after the age of 8 bad habits, teeth and face whether