| 摘要: |
| 目的 了解拔牙矫治及相关肌功能训练在改善恒牙列Ⅱ类骨面型病例正畸后微笑美中的作用。方法20例恒牙期Ⅱ类骨面型病例,拔牙设计,直丝弓矫治技术配合相关微笑美肌功能训练,应用Adobe Photoshop CS7软件对矫治前后微笑相进行定点、测量(包括上前牙曲度、下唇曲度、颊廊、微笑宽度、微笑高度、上下前牙暴露量、微笑弧及上唇曲度形态等),SPSS17.0软件对矫治前后颅颌面结构及微笑相测量数据进行统计分析。结果 矫治后上前牙曲度增大,颊间隙比率和上切牙比率有所增加,下切牙暴露量减少,上述指标差异有统计学意义(P＜0.05)；矫治后理想笑弧和上唇曲度向上的例数明显增加,平坦笑弧和向下的上唇曲度例数明显减少,差异有统计学意义(P＜0.05)； 矫治后U1-SN角变化与上牙曲率变化呈负相关,SN-MP角变化与颊旁间隙比率变化呈负相关(P＜0.05)。结论 恒牙列Ⅱ类骨面型病例拔牙矫治并配合微笑美肌功能训练各项微笑美指标矫治后均有所改善,其中颊廊与面下1/3高度相关,笑弧与上前牙唇倾度高度相关。 |
| 关键词: Ⅱ类骨面型,拔牙矫治,微笑美,肌功能训练 |
| DOI： |
| 分类号: |
| 基金项目:广西医疗卫生适宜技术研究与开发课题[桂卫重S201315-01] |
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| Study of smile changes in permanent dentition patients with skeletal class Ⅱ malocclusion byextraction treatment |
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luhuiyuan
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The People's Hospital of GuangXi Zhuang Autonomous Region
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| Abstract: |
| ObjectiveThe aim was to study the influence on smile and the relevant factors with skeletal class Ⅱ malocclusion by extraction and myofunctionaltherapy. Methods SSelectStwenty permanent dentition patients of skeletal class Ⅱ malocclusion.All subjects had been treated with maxillary and mandibular straight-wire technique by extraction and use additional enhancements palatal measures. The frontal smile Photographs were measured with Adobe Photoshop CS7( including curvature of forward tooth, lower lip curvature, buccal corridor, smile width, smile height,, smiling arc and upper lip shape, etc.),All of measurements were analyzed by SPSS version 17.0.Results After treatment, curvature of upper incisor was increased,Buccal space ratio increased,Upper incisor ratio increased ,Exposure of lower incisors was decreased , These parameters showed statistically significant (P＜0.05).The number of ideal smile arc curvature and upward upper lip increased significantly,the difference was statistically significant (P＜0.05).There was a negative correlation between the change of ∠U1-SN and the change of the curvature change of upper incisor, There was a negative correlation between the change of ∠SN-MP and the change of buccal space ratio.ConclusionThe permanent dentition patients of skeletal class Ⅱ malocclusion was treated with smile myofunctional therapy, smile measurement were improved after treatment, smiling arc incline to coordinate, upper teeth exposure were increased,lower teeth exposed were decreased,buccal corridor and the symmetryof smile were increased, smile charm is worth to ascend. The changes of Smile arc werecorrelated with changes of upper incisors inclination. The changes of buccal corridor were correlated with changes of the vertical height. |
| Key words: keletal classⅡ malocclusion,Extraction,Smile,Myofunctional therapy |
