橡皮链法与牵引钩滑动法关闭拔牙病例 治疗后期前牙散在间隙的疗效观察

Comparation of efficacy of space closure of anterior teeth with rubber chain method or traction hook sliding

摘要:

目的 评价分析橡皮链法和牵引钩滑动法关闭前牙散在间隙的临床疗效。方法 选取2014 年7 月- 2015 年3 月该院口腔科就诊的拔除双侧第一前磨牙进行固定矫治的牙颌畸形患者80 例。所有患者随机平均 分为A、B 组。拔牙间隙关闭后，分别采用橡皮链法（A 组）和牵引钩滑动法（B 组）关闭前牙间隙，施力大 小均为150 g。每月复诊更换橡皮链，通过石膏模型记录测量出间隙变化值，直到间隙完全关闭。比较橡皮链 法及牵引钩滑动法关闭间隙的效果和速度、成人和青少年间隙关闭的速度。结果 两种方法关闭前牙间隙都 能达到预期疗效，未出现不良反应。橡皮链法关闭间隙的平均速度为1.17 mm/ 月，牵引钩滑动法的平均速度 为0.90 mm/ 月。橡皮链法关闭前牙间隙的速度快于牵引钩滑动法（P <0.05）。青少年间隙关闭的速度较成年 人快（P <0.05）。结论 使用橡皮链法关闭前牙间隙是一种较为高效的间隙关闭方式，具有良好的临床推广价值。

Abstract:

Objectives To investigate and compare the efficacy of space closure of anterior teeth using rubber chain method or traction hook sliding. Methods A total of 80 cases with extractions of first bicuspids who were admitted in the Department of Stomatology, Affiliated Hospital of Chengde Medical University from July 2014 to March 2015 were involved. The patients were randomly divided into group A and B. After closure of tooth extraction, patients in group A received orthodontic treatment using elastics chains to close the anterior teeth space, while patients in group B received orthodontic treatment by sliding mechanics to close the anterior teeth space. The pulling force was 150 grams.Rubber was replaced every month. The space change was measured by plaster model. Results Both two methods achieved the satisfactory effect without obvious adverse events. The average speed of rubber chain was 1.17 mm/month while that was 0.90 mm/month when using the traction hook sliding method. Rubber chain exerted a significantly faster speed when compared with traction hook sliding (P < 0.05). Teenagers experienced faster closure of space when comparing with adults (P < 0.05). Conclusion Rubber chain method is an efficient way to close the anterior teeth.