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目的 本研究在矢状方向上分析摆形矫治器远移上磨牙的效果及对支抗前磨牙、切牙的交互作用。方法 选择 4例安氏Ⅱ错、上牙弓Ⅰ -Ⅱ拥挤患者 ,应用摆形矫治器远移上颌第一磨牙 ,每一例治疗前后取模型、测量前磨牙与第一磨牙间的间隙。结果 4例患者在 18周内上第一磨牙远移 3.2 0 +1.6 0mm ,伴有前磨牙 1.4 2 +1.2 0mm的近中移动。结论 摆形矫治器是一简便、对患者依赖少的上磨牙远移装置 ,可在临床中广泛应用
Objective This study analyzed the effect of the swinging orthodontic appliance on the sagittal plane and its interaction with the support premolar and incisors in sagittal direction. Methods Four patients with Angle Ⅱ malocclusion and upper arch Ⅰ-Ⅱ crowding were selected. The maxillary first molar was moved away with the swinging orthodontic appliance. The model was taken before and after each treatment, and the gap between the premolar and the first molar was measured. Results In 4 weeks, the first molars moved more than 3.2 0 +1.6 0mm in 18 weeks, with the proximal molars moving 1.4 2 +1.2 0mm. Conclusion swinging appliance is a simple, less dependent on the patient on the molar removal device can be widely used in clinical practice