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目的固定平导与横腭杆联合应用于安氏Ⅱ1错牙合患者,观察其对支抗牙的控制及覆牙合覆盖的改善效果。方法选择2009—2012年江苏省泰兴市人民医院口腔科恒牙期安氏Ⅱ1患者12例,应用固定平导与横腭杆联合装置矫治,比较矫治前后X线头影测量值及模型测量值。结果矫治前后支抗磨牙近中前移量小于拔牙间隙的1/3,其宽度差异无统计学意义,覆牙合覆盖明显改善。结论固定平导与横腭杆联合应用是一种简单有效、非依赖性的较强支抗装置,能显著改善深覆牙合,提高安氏Ⅱ1错牙合的矫治效果。
Objective To observe the effects of flattened guide and horizontal palatal joint combined with Angle Ⅱ1 malocclusion on the control of dental support and the improvement of dental coverage. Methods Twelve patients with stable Angle Ⅱ1 in Stomatology from 2007 to 2012 in Taixing People ’s Hospital of Jiangsu Province were treated with the combination of fixed level guide and transverse cleft palate. The X - cephalometric and model measurements were compared before and after treatment. Results Before and after the treatment, the amount of proximal and distal movement of the support molar was less than 1/3 of the extraction gap. There was no significant difference in width between the two groups. Conclusion The combination of fixed guide and transverse palatal joint is a simple, effective and independent strong support device that can significantly improve the deep overbite and improve the correction effect of Angle Ⅱ 1 malocclusion.