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目的探讨Twin-block矫治器在安氏Ⅱ类1分类错治疗中临床操作要点,并对治疗后患者牙、牙槽骨、上下颌骨及软组织的改变作出分析和评估。方法选取本院2010—2016年间安氏Ⅱ类1分类错患者20人,均处于生长发育期,应用Twin-block功能矫治器导下颌向近中、内收上颌前牙,并对其治疗前后X线头影测量值进行分析比较和统计学检验。结果 20例患者矫治结束后,下颌向前生长,前牙深覆盖和远中磨牙关系均得到很好的矫正。结论 Twin-block矫治器对生长发育期以下颌功能性后缩为主的安氏Ⅱ类1分类错有良好的治疗作用,可取得明显的牙颌及骨骼的改变,患者下颌前移,面型改善,为患者2期牙列的精细调整提供了良好的开端和基础。
Objective To investigate the clinical features of Twin-block appliance in the treatment of Class Ⅱ division 1 malocclusion and to analyze and evaluate the changes of the patient’s teeth, alveolar bone, maxilla, mandible and soft tissue after treatment. Methods Twenty patients with Class Ⅱ division 1 malocclusion in our hospital from 2010 to 2016 were selected. All of them were in the period of growth and development. Twin-block appliance was used to guide the mandibular anterior, medial and maxillary anterior teeth. Line cephalometric measurements were compared and statistical tests. Results After the treatment of 20 patients, the forward growth of mandible, anterior teeth deep coverage and distal molar relationship were well corrected. Conclusion The Twin-block appliance has a good therapeutic effect on the Class Ⅱ division 1 malocclusion with the functional recovery of the mandibular jaw during growth and development. The maxillary mandibular and skeletal changes can be obtained. The mandibular advancement, Improved, providing a good start and a foundation for fine adjustment of the patient’s dentition 2.