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目的介绍自攻型微螺钉种植体用于正畸支抗的临床过程,以及支抗对磨牙的控制作用,评价自攻型微螺钉种植体支抗的疗效。方法安氏Ⅱ1错合患者16例,年龄在13～25岁。上颌拔除双侧第一前磨牙,矫治设计上颌强支抗,在矫治器粘结之后植入自攻型微螺钉种植体。应用上颌后牙区自攻型微螺钉种植体作为支抗内收前牙,治疗前、后拍摄头颅定位侧位片,并测量切牙和磨牙的治疗变化。结果16例患者应用自攻型微螺钉种植支抗顺利完成正畸治疗,均建立了正常的前牙覆合覆盖关系,上颌第一磨牙在前、后向和垂直向未发生显著性移动,切牙在前、后向发生显著性移位,患者的上颌凸度明显改善。结论自攻型微螺钉种植体是一种稳固、舒适的支抗系统,达到支抗磨牙的稳定,有效治疗拥挤、前突畸形,该方法广泛用于正畸治疗中。
Objective To introduce the clinical process of self-tapping micro-screw implants for orthodontic anchorage and the control effect of support on molars to evaluate the curative effect of self-tapping micro-screw implants. Methods 16 patients with Angle Ⅱ 1 malocclusion, aged 13 to 25 years old. Maxillary extraction of bilateral first premolar, orthodontic design of maxillary strong support, implanted self-tapping micro-screw implants after orthodontic bonding. Application of self-tapping micro-screw implants in maxillary posterior teeth area as adduction anterior teeth, craniofacial lateral radiographs before and after treatment, and therapeutic changes of incisors and molars were measured. Results Twenty-six patients underwent orthodontic treatment with self-tapping micro-screw implanting support. The normal anterior tooth coverage was established. There was no significant movement in the anterior, posterior and vertical maxillary molars. Tooth in the anterior, posterior significant shift occurred, the patient’s maxillary convexity improved significantly. Conclusion Self-tapping micro-screw implants are a stable and comfortable support system which can support the stability of anti-molar and effectively treat congested and anterior deformity. This method is widely used in orthodontic treatment.