摘要
目的:分析固定矫治技术配合分裂簧式改良斜面导板,矫治恒牙列后期伴上颌缩窄、下颌后缩的骨性安氏Ⅱ类Ⅰ分类错牙合患者矫治前后软组织侧貌变化。方法:选取30例恒牙列后期伴上颌缩窄、下颌后缩的骨性安氏Ⅱ类Ⅰ分类错牙合患者,采用标准方丝弓固定矫治技术配合分裂簧式改良斜面导板进行矫治,测量矫治前后代表软组织侧貌的各项指标并对其进行统计分析。结果:矫治后面角、鼻突度增大,颏部软组织增厚,H角、下唇突点-H线距离、鼻下点-H线、上唇凹深、颏唇沟深度减小,矫治前后差异具有统计学意义(P<0.05);鼻突角、上唇基部厚度治疗前后差异无统计学意义(P>0.05)。结论:运用标准方丝弓矫治技术,同时配合分裂簧式改良斜面导板,可有效减小恒牙列后期骨性安氏Ⅱ类Ⅰ分类错牙合患者侧面型突度,改善其软组织侧貌。
Objective To investigate the changes of soft tissue profile in late period of permanent teeth of skeletal class II division I malocclusion with maxillary transverse deficiency and mandibular retraction before and after orthodontic treatment using fix appliance and modified inclined bite-plate with split spring.Methods30patients with skeletal classⅡdivision I malocclusion with maxillary transverse deficiency and mandibular retraction had been chosen and treated by standard edgewise appliance technique combined with modified inclined bite-plate with split spring,the measurement items about soft tissue profile were measured and analyzed with statistical method.Results The facial angle,nasal prominence and thickness of soft tissue in Menton were increased,H angle,the distance between superior of lower lips and H line,Sn-H line,upper sulcus depth and Bs-LLPos were decreased after orthodontic treatment,the measurements were statistically different(P<0.05).No significant difference were found in the angle of nasal convexity and upper lip thickness.Conclusion AnglesⅡdivision I malocclusion Patients'soft tissue profile has been improved and facial convexity has been released by using standard edgewise appliance technique combined with modified inclined bite-plate with split spring.
作者
韦玲
潘莹
韦晓玲
WEI Ling;PAN Ying;WEI Xiao-ling(Department of Stomatology, the People's Hospital of Guangxi Hechi City, Hechi 547000,Guangxi,China)
出处
《中国美容医学》
CAS
2018年第2期110-112,142,共4页
Chinese Journal of Aesthetic Medicine
基金
广西河池市科技局科研项目[河科推1378-7]
关键词
安氏Ⅱ类错牙合
恒牙列后期
改良斜面导板
软组织侧貌
正畸治疗
class Ⅱ malocclusion
ate period of permanent teeth
modified inclined bite-plate
profile of soft tissue
orthodontic
