【摘要】 目的了解广东成年女性安氏Ⅰ类开唇露齿患者拔除4个第1双尖牙矫正后软组织侧貌变化情况,评价该类患者矫正后软组织变化的意义。方法回顾性研究15例广东成年女性安氏Ⅰ类开唇露齿患者,用头颅侧位分析法分析拔牙矫正前后软组织X线片,再将同一测量值于矫正前后做配对t检验,了解有无显著性差异,分析判断矫正后唇组织变化的意义。结果在角度方面:鼻唇角、上下唇角、Z角增加;线距方面:上下唇长和上下唇厚加大,而上下唇审美平面距和上下唇突距皆缩小,且变化有统计学意义;面凸角、面角、上下唇基角和頦厚等变化无统计学意义。结论该类患者拔除4个第1双尖牙的矫正可以使患者面部严重不协调关系有明显改善;但唇厚较治疗前加大,唇间距仅部分缩小,上前牙仍有部分外露,患者仍然有开唇露齿的面像,其进一步好转依赖于患者唇肌功能的改善。更多还原

【Abstract】 Objective To find out the changes of the soft tissue profile in Guangdong women with Angle’s I teeth uncovered by lips after extraction of 4 first bicuspid teeth and to evaluate its significance. Methods Fifteen cases of adult Guangdong women with Angle’s I teeth uncovered by lips were enrolled in this retrospective study. The X-ray film of lateral cephalometry was used to analyze the soft tissue profile in pre- and post- corrective tooth extraction. The paired t-test was statistically applied for comparison between the changes of lip tissue in pre- and post- correction. Results The changes occurred obviously in the angles of nose vs. lip and upper vs. lower lips, angle Z, and the length, thickness, esthetical plane distance and convex distance of upper and lower lips, but not in the angles of face and facial convex, basic angle of upper vs. lower lips and chin thickness. Conclusilons The facial dislocation and figure of these women have been positively improved after extraction of 4 first bicuspid teeth in spite of the larger thickness of lips than before correction, the just partly shortened distance between lips and the upper and front teeth still exposed and uncovered by lips to some extent. Further improvement depends on functional exercise of lip muscles.更多还原