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目的:对比常规固定矫治器矫治与固定矫治器结合固定式平导矫治,观察治疗疗效。方法:选择14例安氏Ⅱ类Ⅱ分类错畸形的患者,随机分成常规固定矫治器结合固定式平导治疗组(A组)和常规固定矫治器对照组(B组)结果:A组平均治疗时间为(14.4±3.2)个月,B组平均治疗时间为(17.2±4.7)个月,矫治后两组患者上下颌骨及牙齿的变化趋势相似,SNA、SNB角无变化,U1-PP增大,L1-MP增大,U1-L1减小,A组面下1/3显著增加。结论:对于内倾型深覆无论是否结合固定式平导的使用均可达到预期的治疗效果,但是结合固定式平导可明显改善面型,缩短矫治时间。
OBJECTIVE: To compare the effects of conventional fixed orthodontic appliance and fixed appliance with fixed level guide and to observe the therapeutic effect. Methods: Fourteen patients with Class Ⅱclass Ⅱ malocclusion were randomly divided into two groups: conventional fixed appliance combined with fixed-guided therapy (group A) and conventional fixed appliance control (group B). Results: The average treatment in group A (14.4 ± 3.2) months, and the mean duration of treatment in group B was (17.2 ± 4.7) months. There was no significant difference between the two groups Large, L1-MP increases, U1-L1 decreases, A group under the 1/3 significantly increased. CONCLUSIONS: For the deep-covered type, no matter whether it is combined with the fixed type or not, the expected therapeutic effect can be achieved. However, combined with the fixed type of the flat guide can obviously improve the surface type and shorten the treatment time.