Abstract: [Abstract]Objective:3D scanning young uighurs in XinJiang kashgar area normal tooth teenagers model,three dimensional measuring Bolton and Pont index,and to establish the region teenagers three-dimensional fang in the database.Method:select normal tooth model 191 (male 72, female 119),using the homemade lang cheng dl-100 in mouth scanner get three-dimensional digital model of three-dimensional reverse engineering software GEOMAGIC measure tooth crown width, width of dental arch,and the results analysis.Results:Bolton index to compare differences between men and women there is no statistical significance (P>0.05), between men's and women's jaw teeth quantity is highly related to the Pont index compared differences between men and women have statistical significance (P<0.05).Conclusion: Dentition index exists racial,regional, gender and other differences, should refer the standard of this region in the middle of the clinical application.

Key words: 3D scanning, digital model, Bolton index, Pont Index