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目的:探讨采用改良平面导板结合直丝弓固定矫治前牙深覆的临床效果和意义。方法:选择直丝弓技术矫治21例患者的安氏Ⅱ类错。结果:治疗后与治疗前X线头影测量值比较差异有统计意义(P<0.05)。结论:对于水平生长型的病例,直丝弓技术配合上颌改良平面导板矫治深覆的方法值得推广,而对于高角型的深覆患者,应慎用前牙平面导板。
Objective: To investigate the clinical effect and significance of using an improved planar guide combined with straight arch fixation for the treatment of deep overburns of anterior teeth. Methods: Straight wire arch technique was used to treat Class Ⅱ malocclusion in 21 patients. Results: There was significant difference between X-ray and Cephalometric before treatment (P <0.05). Conclusions: For horizontal growth cases, the technique of straight wire arch technique combined with maxillary modified planar guide plate to treat deep overburden is worth popularizing. For the patients with deep overburden of high angle type, the anterior flat guide plate should be used with caution.