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目的:研究自锁托槽与普通托槽对安氏I类重度拥挤患者牙根吸收的影响。方法:回顾性选择2006年6月-2012年10月在温州医科大学附属口腔医院正畸科完成治疗的患者70例,分为自锁托槽组(35例,Damon3 0.022“bracket)和普通托槽组(35例,0.022”3M bracket)。治疗前后由同一人、相同仪器、相同设置拍摄全景片。分别测量上下前牙的牙根吸收程度。采用SPSS11.0进行统计学分析。结果:自锁托槽和普通托槽对牙根吸收的影响差异无统计学意义(P>0.05)。但是自锁托槽组轻度牙根吸收的患者多于普通托槽组。结论 :自锁托槽与普通托槽对安氏I类牙列重度拥挤患者的牙根吸收没有差别。
OBJECTIVE: To study the effect of self-ligating brackets and brackets on root resorption in patients with Class I severe overcrowding. Methods: Retrospectively selected 70 patients with orthodontics from Affiliated Stomatological Hospital of Wenzhou Medical University from June 2006 to October 2012. The patients were divided into self-ligating bracket group (35 cases, Damon3 0.022 “bracket) and ordinary Bracket group (35 cases, 0.022 ”3M bracket). Before and after treatment by the same person, the same instrument, the same set of panoramic film. Respectively measure the root absorption of upper and lower anterior teeth. SPSS11.0 was used for statistical analysis. Results: There was no significant difference in root resorption between brackets and brackets (P> 0.05). However, patients with self-ligating brackets received more light root resuscitation than those with brackets. CONCLUSIONS: There is no difference in root resorption between self-ligating brackets and brackets for Class I crowded patients with severe crowding.