上颌尖尖牙埋伏阻生患者上颌切牙牙齿宽度改变的研究

目的:探讨中原地区人上颌切牙宽度与尖牙阻生是否存在内在的联系。方法:选择118名上颌尖牙埋伏阻生患者,分为68名唇侧阻生组和50名腭侧阻生组。选择70名年龄、性别相匹配,且上颌尖牙正常萌出的患者,作为对照组。测量这些患者的上颌切牙近远中宽度,并进行统计学分析。结果:尖牙阻生患者的左右侧中切牙及侧切牙的近远中宽度基本一致,无统计学差异。尖牙唇侧阻生患者的侧切牙宽度大于对照组,腭侧阻生患者的侧切牙宽度小于对照组,均有统计学差异。唇腭侧阻生患者的侧切牙宽度差异有显著性。

Objective：To investigate the rela- tionship between upper incisor width and maxillary canine impaction. Method ： 118 pa- tients with impaetion of maxillary canine were divided into two groups （bueeal and palatal）. 68patients were in buccal group and 50patients in palatal group. The control group comprised 70 age - matched crown di- ameters were measured and analysed statis- tically among the three groups. Results：The maxillary size of central incisor was almost normal in three groups. In the palatal group, the maxillary lateral incisor was significantly narrower than that of controls. By contrast, the lateral incisorin buecal group was signif- icantly larger than that of controls. Conclu- sion： The changes of maxillary ineiors showed significant associations with the maxillary canine impaction.