摘要
目的研究拔牙与非拔牙矫正对成人骨性Ⅱ类错气道及周围结构的影响,并分析可能的原因。方法选择36例成人骨性Ⅱ类错正畸结束病例,拔牙组20例,非拔牙组16例。用正颌外科模拟预测系统(CASSOS)软件测量患者治疗前后X线头颅侧位片,并对数据进行配对t检验。结果拔牙组与非拔牙组的腭后气道(Phw1-psp)与舌后气道(Phw2-Tb)在正畸前后均无显著变化(P>0.05)。非拔牙组的前颌间距离(Ant.ln Mx.Ht)与颌间面积(ln Mx Area)有所增加,差异有统计学意义。结论成人骨性Ⅱ类错畸形的掩饰性治疗,不论是否减数,在下前牙不过分内收的情况下,气道在矢状向的变化并不显著。
Objective To investigate the effects of orthodontic treatment on the upper airway and surrounding structures in adult patients with skeletal class Ⅱ malocclusion,and to evaluate the relationship between changes in the craniofacial morphology,position of incisor and upper airway dimensions.Methods 36 adult patients with skeletal class Ⅱ malocclusion were selected,including 20 with teeth extracted and 16 with teeth not extracted.Cephalometric analysis was performed before and after treatment by CASSOS software.Results No statistical difference was found in Phw1-psp and Phw2-Tb in both non-extraction group and extraction group after treatment.Ant.ln Mx.Ht and ln Mx Area increased by 1.08 mm2 and 117.37 mm2 respectively in non-extraction group（P0.05）.Conclusions The upper airway dimensions can not be altered sagittally either by extraction or non-extraction orthodontic treatment in adult patients with skeletal class Ⅱ malocclusion,so far as the lower incisor is not retracted extremely.
出处
《口腔医学》
CAS
2012年第2期73-76,共4页
Stomatology
基金
上海市科学技术委员会2010年科研计划项目(10140904300)
关键词
上气道
正畸
头影测量
骨性Ⅱ类错
upper airway
orthodontics
cephalometry
skeletal class Ⅱ malocclusion
