[Measurement of normal occlusion models from healthy Yizu persons in Yunnan province].

ABSTRACT

PURPOSE: To investigate the size of tooth, dental arch, dental base bone and palate on normal permanent occlusion of Yizu persons in Yunnan province and characterize the morphology of tooth, dental arch and base bone of Yizu persons. METHODS: 186 normal dentognathic models of permanent dentition from healthy Yizu persons were obtained and measured. Group t test, correlation analysis and linear regression analysis were used for data analysis with SPSS12.0 software package, the data was also compared with that from different regions and nationalities. RESULTS: There were significant differences in tooth size, width of dental arch and basal bone between males and female, where those from males showed higher mean values. The size of tooth and dental dimensions from Yizu persons was bigger (P<0.05) than that from Chinese Han's persons in Yunnan province. CONCLUSIONS: The results of current investigation are of value to orthodontist on diagnosis, design and orthodontic treatment. The tooth size and dental dimensions are different between different race, region and sex.