【摘要】 目的:通过头颅侧位片对重庆地区汉族人群唇部厚度进行测量分析,建立重庆地区唇部厚度分类标准,同时探索唇部软组织厚度对唇部回收的影响及不同唇厚度的切牙上唇回收比。方法:招募240名18~35岁重庆地区汉族成年人,其中男女各120名。每个样本拍摄头颅侧位片,测量唇部软组织厚度,并根据测量结果建立唇厚度分类标准,同时对男女唇厚度进行t检验。选取2009年1月至2012年12月就诊于重庆医科大学附属口腔医院的安氏II类I分类成年女性患者68例,术前术后均拍摄头颅侧位片,测量唇部软组织厚度并根据第一部分测量结果分为薄唇型、均衡型和厚唇型,求出各组切牙上唇回收比例。用Pearson相关分析法对唇厚度与切牙上唇回收比进行分析。结果:成年男性患者唇部厚度大于成年女性患者(P<0.01);安氏II类I分类成年女性患者切牙上唇回收比例在薄唇型为1.6:1,均衡型为2.2:1,厚唇型为2.9:1。结论:上唇软组织厚度存在性别差异;上唇软组织厚度对安氏II类I分类女性患者上唇回收有影响,上唇随切牙回收量与上唇软组织厚度呈负相关。更多还原

【Abstract】 Objective: To establish the Chinese Han national criteria for the thickness of upper lip in Chongqing and to investigate the eff ect of lip thickness on lip retraction in orthodontic treatment. Methods: A total of 240 adult patients(male=120, female=120) of Chinese Han nationality aged 18–35 years in Chongqing were treated with cephalograms and measured the thickness of upper lip. We established the Chinese Han national criteria for the thickness of upper lip in Chongqing according to the results. Sixty-eight female patients with Angle II 1 from Department of Orthodontics Stomatological Hospital of Chongqing Medical University were treated with maxillary premolars extraction, and pre- and post-treated with lateral cephalograms, then divided into 3 groups according to our criteria: a thin lips group, a normal lips group and a thick lips group. The ratio of the incisors retraction and the upper lip retraction were measured and calculated. The correlation between incisors retraction and the upper lip retraction was analyzed by the Pearson correlation method. Results: There was statistical significance in the thickness of upper lip between males and females(P<0.01). The ratio of maxillary inscior retraction to the upper lip soft tissue retraction was 1.6:1, 2.2:1 and 2.9:1 in the thin lips group, the normal lips group and the thick lips group, respectively. Conclusion: Gender differences exist in the thickness of upper lip. Upper lip retraction with the incisors was negatively correlated with the soft tissue thickness of the upper lip in females with Angle II 1.更多还原