Study on mesiodistal teeth size and the relationship between upper and lower teeth dimension of normal occlusion from Han Chinese in Xi'an
- VernacularTitle:西安地区正常牙冠宽度及上、下颌牙量相关性研究
- Author:
Xiaoyan LI
;
Jun CAO
- Publication Type:Journal Article
- Keywords:
Normal occlusion;
Mesiodistal tooth size;
Bolton ratios;
Tooth size discrepancy
- From:
Journal of Practical Stomatology
2001;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the mesiodistal teeth size and the relationship between upper and lower teeth dimension of normal occlusion from Han Chinese in Xi'an. Methods: 52 males and 55 females with normal occlusion were selected. The mesiodistal width of each tooth was measured using a vernier gauge caliper. Statistical analysis was performed. Results: For the 107 cases with normal occlusion, the mean and standard deviation of the teeth size were calculated. There were significant differences between males and females in maxillary incisors, canines, first molar and mandibular canines, premolars. The normal range was obtained for the anterior and overall tooth size ratio(anterior ratio:78.32?3.01 overall ratio:91.10?2.27); and the regression equation that was used to quantify the tooth size discrepancies was expressed according to the significant correlation between the upper and lower tooth (r anterior=0.754, rtotal=0.851). Conclusion: There is a relationship between upper and lower teeth dimension. Sex difference should be considered when tooth size was used in clinic.
