Korean J Orthod.  1999 Aug;29(4):435-444.

A longitudinal study on the interrelationship between the growth change of the gonial angle and IMPA

• Chung CS
• Ryu YK
• Sohn BW
• Kim YJ

Abstract

This study was undertaken to investigate the growth change of gonial angle and interrelationship between the growth change of gonial angle and IMPA in the longitudinal data from 7 years to 15 years. By analyzing the serial lateral cephalograms of 15 males and 18 females of 7 years old to 15 years old who had no abnomality in growth and development and no history of orthodontic treatment, the following conclusion were obtained. 1. Gonial angle gradually decreased with aging in 25 children and in 9 children increased or maintained. 2. There was a tendency that children who decreased gonial angle with aging showed gradual increase of IMPA and children who increased of maintained gonial angle with aging showed decrease of IMPA 3. There was a tendency that regardless of the change of gonial angle, interincisal angle decreased with aging.

Keyword

Gonial angle; IMPA; Interincisal angle; Gonial angle; IMPA; Interincisal angle

MeSH Terms

Adolescent
Aging
Child
Female
Growth and Development
Humans
Longitudinal Studies*
Male