A CASE REPORT OF SEVERE ANGLE'S CLASS III MALOCCLUSION

Sung,  Jae-Hyun

J Korean Dent Assoc > Volume 16(4); 1978 > Article

The Journal of The Korean Dental Association 1978;16(4):273-278.
Published online April 30, 1978.

심한 Angle씨 III급 부정교합의 치험예

성재현

경희대학교 치과대학 교정학교실

A CASE REPORT OF SEVERE ANGLE'S CLASS III MALOCCLUSION

Jae-Hyun Sung

Department of Orthodontics, School of Dentistry, Kyung Hee University

Abstract

A girl aged 16 years and I month, had a severe Angle's class III malocclusion, characterized by a retarded and constricted maxilla, anterior and posterior crossbite. This patient underwent extraction of two lower Ist premolar. After extraction, author placed multibanded system in lower dental arch to change the long axis of anterior teeth and delivered removable appliance with Coffin spring in the upper dental arch to expand dental arch. After 13 months, anterior & posterior crossbite was corrected and this patient's profile was improved. Superimposition of pretreatment and posttreatment cephalograms upon the SN line registered at S showed backward downward rotation of the mandible and retrusion of lower lip.