Average and ideal values for the Powell analysis in Japanese children

Abstract

We obtained average values for the Powell analysis of Japanese children using photographs of the profiles of 1,518 children between 6 and 17 years of age. We found no chronological changes in the nasofrontal angle, nasofacial angle, nasomental angle, mentocervical angle, nasolabial angle or subnasale-stomion/stomion-menton ratio. However, there were significant chronological changes in the base to dorsum ratio and nasion-subnasale/subnasale-menton ratio. By aesthetic evaluation of selected 276 profiles of adolescents between 16 and 17 years of age, we obtained ideal values for this group.