目的评价片段弓矫治技术治疗前牙外伤的效果。
Objective To evaluate the clinical curative effect of segmental arch technique in incisor luxation.
方丝弓矫治技术中，前牙深覆的矫治是一大难题。
In Edgewise technique, one of the difficult problems is the correction of overbite.
目的通过多曲方丝弓矫治技术的临床运用，分析其矫治特点，探讨其作用机理。
Objective To approach the mechanism of MEAW application, analyze and summarize its effects.
目的评价尖牙向后结扎应用于方丝弓矫治技术的临床疗效，并探讨其机制和使用方法。
Objective To evaluate the effect of canine laceback applied in edgewise appliance and to discuss the mechanism and application.
结论：使用直丝弓矫治技术时，应重视托槽表面粗糙、磨损对摩擦力的影响，注意支抗控制。
Conclusion: the attention would be played to the influence of the roughness and abrasion of the bracket slot area on friction and anchorage control in using sliding mechanics.
方法：对8例下颌磨牙颊向或舌向倾斜错位的患者，采用简易半固定舌弓配合方丝弓矫治技术在矫治初期进行矫治。
METHODS: Using a simple semi-fixed lingual arch combined with the edgewise technology to correct 8 cases with linguoclination or buccoclination of the mandibular molars.
方法：对8例下颌磨牙颊向或舌向倾斜错位的患者，采用简易半固定舌弓配合方丝弓矫治技术在矫治初期进行矫治。
METHODS: Using a simple semi-fixed lingual arch combined with the edgewise technology to correct 8 cases with linguoclination or buccoclination of the mandibular molars.
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