Esthetic is one of the prime goal of the orthodontic treatment. The upper incisor position is important because it is decisive in balanced smile.
This study was attemped to obtain the standards and equations on the esthetic upper incisor position.
Lateral cephalometric radiographs of 66. Korean young adult females who were candidates of Miss Korea Beauty Contest were traced, measured and statistically analyed
The results were as follows :
1. The mean and standard deviation of the measurement for upper incisor position were obtained in the Korean Beauty.
2. Among the measurements for the axis of upper incisor, 1 to Sn and 1 to FH were highly correlated with FHMP, ANB, FH-NPog, NAPog, Y-axis, but 1 to SN(Is-Pr) to present axial inclination of labial surface of upper incisor didn´t have any correlation with the measurements for dentofacial pattern.
3. Among the measurements for the vertical position of upper incisor, 1 to stom had low correlation with the measurements for dentofacial pattern and 1 to PP(mm) was highly correlated with the measurements for facial growth direction. .
4. Sixteen multiple regression equations were established to predict esthetic upper incisor position balancing with dentofacial pattern.
5. It doesn´t have much power of persuation to predict esthetic upper incisor position from the measurements for dentofacial pattern.
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