刘 红1 , 杨振华2, 段银钟2, 刘兰忠1 , 李建学1 , 宋卫东1
　　（1.兰州军区总医院口腔科　　甘肃省兰州市 730050； 2.第四军医大学口腔医学院正畸科）

　　[摘要]目的：临床应用改良固定反式双阻板矫治器（Twin-block appliance，TBA）联合前牵治疗Angle Ⅲ类骨性前牙反牙合 ，以期评价其临床应用效果及对软组织的影响。方法：矫治骨性前牙反牙合15例，对治疗前后临床表现及X线软组织测量进行分析，并与单纯反式TBA组进行比较。结果：联合组上下颌软组织的变化均十分明显，较快改善了侧貌外形。反式TBA组对下颌软组织的影响较大。结论：认为反式TBA联合前牵对上下颌软组织作用均较大，是矫治前牙反牙合的理想装置。
　　[关键词]反式双阻板矫治器；前牵引；Angle Ⅲ类错牙合 ；反牙合 ；软组织
　　[中图分类号]R783.5　　[文献标识码]A　　[文章编号]1008-6455(2005)04-0468-03

　　Clinical investigation of the modified fixed reverse Twin-block appliance combined　with maxillary protraction in treatment of anterior crossbite in soft tissue
　　LIU Hong1, YANG Zhen-hua2, DUAN Yin-zhong2, LIU Lan-zhong1, LI Jian-xue1, SONG Wei-dong1
　　(Department of Stomatology,Lanzhou General hospital,Lanzhou Command,PLA,Lanzhou 730050,Gansu Province,China)

　　Abstract： Objective To evaluate the curative effects of the modified fixed reverse TBA combine maxillary protraction on treatment of early Angle Ⅲ skeletal anterior crossbite. Methods　　The appliance was used on 15 growing subjects with early Angle Ⅲ skeletal malocclusion, compared with the modified fixed reverse TBA in clinical character and X-ray cephalometry before and after treatment.　　Results　　The maxillary and mandibular soft tissue changes could be achieved fast in combined treated group, and the profile had changed effectively.The main changes in the modified fixed reverse TBA treated group were reduced mandibular soft tissue protrusion. Conclusion　　All findings indicated that Angle Ⅲ skeletal anterior crossbite can be corrected successfully with reverse TBA combined maxillary protraction. The maxillary and mandibular soft tissue changes could be achieved fast in combined treated group, and the profile had changed effectively.
　　Key words： reverse Twin-block appliance; maxillary protraction; Angle Ⅲ malocclusion; crossbite; soft tissue

编辑：散步的鱼

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