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目的评估垫式快速扩弓加前方牵引在恒牙早期治疗骨性Ⅲ类错畸形矫治中的效果。方法选择18例恒牙早期安氏Ⅲ类错畸形的患者,用垫式快速扩弓器加前方牵引矫治器进行治疗,治疗前后拍摄头颅侧位片,对矫治前后的X线头影测量进行分析比较。结果治疗后患者许多标志点在水平方向上都有明显变化,上颌骨明显前移(P<0.05)。结论 垫式快速扩弓加前方牵引矫治器有促进上颌骨向前发育,抑制下颌骨向前发育的作用,可改善患者软组织侧貌,有效治疗恒牙早期骨性Ⅲ类错畸形。
Objective To evaluate the effect of pad rapid expansion and anterior traction on the treatment of skeletal Class Ⅲ malocclusion in the early stage of permanent dentition. Methods 18 patients with early Angle malocclusion of type Ⅲ malocclusion were treated with orthotopic rapid protractors and traction appliance before and after treatment. The cephalometric radiographs were taken before and after treatment, analyse and compare. Results After treatment, many of the markers in patients with significant changes in the horizontal direction, the maxillary forward significantly (P <0.05). Conclusions padded rapid protraction plus front traction appliance can promote forward development of the maxilla and inhibit the forward development of the mandible, which can improve the soft tissue profile and effectively treat the early stage skeletal class Ⅲ malocclusion.