摘要
目的:通过三维扫描,测量、分析切牙乳突与上前牙的位置关系。方法:选取20～70岁年龄段的符合标准的上颌模型100例,采用2种方式分别进行分组:按年龄分为20～40岁、40～70岁2组,按性别分为男性组与女性组。通过三维扫描,将牙列模型转化为计算机点云数据并进行三维重建,利用图像处理软件建立参考平面,将三维牙模上的参照点投影至所建平面上,测量各投影点之间的关系,得到上中切牙唇面至切牙乳突后缘的距离(IP)、上尖牙牙尖连线与切牙乳突后缘的距离(ICP)、上尖牙牙尖连线与上中切牙唇面的距离(IIC)。所得数据利用SAS14.0软件包进行分析。结果:上中切牙唇面至切牙乳突后缘的距离平均值为9.3974 mm,标准差为1.6913。上尖牙连线至切牙乳突后缘的距离平均值为2.3936 mm,标准差为1.3193。上尖牙连线至上中切牙唇面的距离平均值为6.9806 mm,标准差为1.4321。以上3组数据按照年龄与性别分组,均无统计学差异。结论:本实验成功将三维扫描技术应用于牙科模型的测量分析,所得数据可为全口义齿人工上前牙的排列提供参考。年龄与性别对上前牙与切牙乳突的位置关系无影响。
PURPOUSE： To evaluate the three-dimensional relationship between the incisive papilla and maxillary anterior teeth. METHODS： One hundred maxillary dentition models were selected. They were divided into two groups according to age （20-40 years, 40-70 years） and gender （male,female）. The point cloud data of the models were obtained by three-dimensional scanning, and the three-dimensional models were reconstructed. Reference plane, reference points on the three-dimensional models were projected by using image processing software. The relationship between incisive papilla and maxillary anterior teeth were measured, including the distance between incisor and papilla（IP）, intercanine line and papilla （ICP）, as well as incisor and intercanine （IIC）. Student＇s t test was used for data analysis using SAS14.0 software package. RESULTS： The average IP distance was （9.3974±1.6913） ram. The average ICP distance was （2.3936±1.3193） mm. The average IIC distance was （6.9806±1.4321） ram. No difference was found for different age and gender （P〉 0.05）. CONCLUSIONS： Three-dimensional seanning technology is sueeessfully used in measurement and analysis of the dental model. The data can be used as a referenee for the arrangement of the anterior teeth of the complete denture. Age and gender have no significant effect on the relationship between incisive papilla and maxillary anterior teeth. Supported by Shanghai Undergraduate Innovation Projeet （IAP4160） and Shanghai Leading Academic Discipline Project （S30206, T0202）.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2013年第2期202-205,共4页
Shanghai Journal of Stomatology
基金
上海市大学生创新性实验项目(IAP4160)
上海市重点学科建设项目(S30206
T0202)~~
关键词
位置关系
切牙乳突
上前牙
三维测量
Positional relationship
Incisive papilla
Maxillary anterior teeth
Three-dimensional measurement
