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目的应用生理性支抗控制技术对青少年重度拥挤的错畸形患者进行矫治,观察分析矫治效果。方法选择2013年8月至2014年9月在安康市中医院口腔科就诊的牙列重度拥挤的安氏Ⅰ类、Ⅱ类错畸形患者17例,在拔除4颗第一前磨牙后,应用生理性支抗控制技术进行矫治,对治疗前后结果进行分析。结果 17例患者在未增加任何辅助支抗的情况下,矫治疗程16~24个月。矫治结果显示,牙列拥挤解除,尖牙、磨牙关系中性,覆、覆盖正常,面型良好。与矫治前比较,矫治后头影测量显示,上中切牙与前颅底平面相交的内下角(U1-SN)、下中切牙长轴与下颌平面相交的内上角(L1-MP)、下唇突点到审美平面的距离(LL-E)显著减小,上、下中切牙长轴的交角(U1-L1)显著增加,差异均有统计学意义(P<0.05)。结论生理性支抗控制技术对矫治生长发育期的青少年重度牙列拥挤患者效果较好。
Objective To apply the technique of physiological support control to treat severe overcrowded deformity in adolescents and to observe and analyze the effect of orthodontic treatment. Methods From August 2013 to September 2014, 17 patients with severe crowded Class I and II malocclutions treated in Department of Stomatology, Ankang Hospital of Chinese Medicine were selected. After removal of the four first premolar teeth, Sexual support control technology for correction, before and after treatment results were analyzed. Results 17 cases of patients without any additional support in the case, the treatment of 16 to 24 months. Correction results show that the lifting of crowded crowns, canine, molar relationship between the neutral, covering, covering normal, good shape. Compared with the pre-treatment, Cephalometric measurements showed that the U1-SN, the L1-MP intersecting the mandibular plane and the long axis of the mandibular incisors, The distance between the lower lip and the aesthetic plane (LL-E) decreased significantly, while the angle of the long axis of the upper and lower incisors increased significantly (P <0.05). Conclusions Physiological supportive control technique is more effective in treating patients with severe dentition crowding during adolescent growth and development.