| Objective:The purpose was to study the dental variations in Class I skeletal jaw base relationship by comparing attractive and non-attractive facial profiles. Method:From1,800patients through Xiangya Hospital database,205Class I skeletal jaw base relationship were screened out.205radiographs were analyzed with respect to E line and H line angle.50matched patients based on ANB, age and gender was finally selected.54dental indicators were measured from dental cast. Paired t-test and Wilcoxon Signed Ranked test were used for statistics analysis. Results: Significant mean difference in upper canine arch depth, upper premolar arch depth, lower canine arch depth, lower premolar arch depth and lower1st molar arch depth were on average smaller (p<0.05, p<0.05, p<0.01, p<0.01and p<0.01respectively) in attractive subjects than when compared with non attractive subjects. Conclusion:Non attractive group have a larger arch depth than attractive group indicating incisor inclination as a compensating factor accounting for the facial attractiveness. |