XXXX and proportions in a central mainland chinese population.

@entity1 @entity1347 @entity235
OBJECTIVES: To obtain maxillary anterior tooth dimension and proportion values for the Central Chinese population and to evaluate the existence of sexual dimorphism, any consistent relationships between the tooth ratios, and the presence of golden proportions. METHODS: Tooth dimensions and proportions of six @entity1347 were recorded on gypsum casts obtained from 147 subjects (82 @entity1 and 65 @entity1 ). Of these, 115 casts were digitally photographed in a standardised manner and apparent width values for six @entity1347 were recorded for golden proportion analysis. Existence of sexual dimorphism, any consistent width/height ratio and golden proportions were statistically analysed. One-sample t-test, two-sample t-test, and paired t-test were used to analyse the data. RESULTS: There were no significant differences between measurements on the right and left side. Sexual dimorphism existed for various tooth dimensions. There was no statistically significant difference for width/height ratios between the two genders for central incisor and lateral incisor. However, @entity235 showed a statistically significant difference. The golden proportion guideline was not applicable for this population. CONCLUSION: The @entity1347 dimensions were significantly greater for @entity1 than @entity1 ; however, the mean difference was small (< 0.2 mm) and may not be clinically significant. The golden proportion, or any recurring @entity1347 proportions, was not found for the population. There was a significant difference in width/height ratio of @entity235 between the genders, confirming its greatest gender-based morphological difference.
