The purpose of this study is to evaluate the chronologic changes of the soft tissue profile in 6 to 11 years children.
The author analyzed 174 cephalometric roentgenograms of 13 boys and 16 girls taken from the ages of 6 to 11 to assess the growth changes of the soft tissue profile.
The results were obtained as follow:
1. Means, standard deviation and coefficient of variation of children were obtained.
2. Items which showed difference between males and females in longitudinal study were prn.
Sn. A', and Ls that were greater than females variation.
3. With age, thickness of the soft tissue were increased except Ls.
4. Nasolabial angle and facial convexity had no significant change with age and sex.