摘要
目的初步探讨青春生长减速期安氏ⅡⅠ类错牙合患者减数治疗前后的颏唇部软硬组织变化。方法选择20例青春生长减速期安氏ⅡⅠ类错牙合患者,拔除上下颌四个第一前磨牙,用直丝弓矫治器治疗。分析比较治疗前后颏唇部软硬组织在X线头颅侧位片上的变化。结果治疗后上下切牙突度减小,面部垂直高度显著增加,软组织面凸角减小、颏沟倾角、颏部凹陷程度及软组织颏厚度增加。结论青春生长减速期安氏ⅡⅠ类错牙合患者矫治后软组织侧貌的改善是正畸治疗和生长发育相互作用的结果,矫治中还应注重垂直向上的控制。
Objective To investigate the soft and hard tissue＇s change of chin before and after treatment in classⅡdivisionⅠpatients after adolescence growth spurt.Methods Twenty classⅡⅠ patients after adolescence growth spurt were studied.The first maxillary and mandibular premolars were extracted and the patients were treated with fixed appliance.The cephalometric changes of the soft and hard tissue chin were statistically analyzed before and after treatment.Results After treatment,the upper and lower incisors＇ protrusion was reduced,the vertical facial height was significantly increased,the angle of facial convexity was reduced,the chin groove angle was increased,the chin groove was more depressed and the thickness of soft tissue chin was increased.Conclusion The profile of chin soft tissue develeped after treatment in classⅡdivisionⅠpatients after adolescence growth spurt.The changes may be resulted from the interaction between orthodontic treatment and development.
出处
《福建医科大学学报》
2011年第4期291-294,共4页
Journal of Fujian Medical University
关键词
错牙合
安氏Ⅱ类
青春期
正畸学
矫正
放射摄影术
牙科
头部
唇
malocclusion
Angle class Ⅱ
puberty
orthodontics
corrective
radiography
dental
radiography
head
lip
