A CASE REPORT OF ANGLE'S CLASSⅢ MALOCCLUSION

Lee,  Hui-Jo; Seo,  Jeong-Hun

J Korean Dent Assoc > Volume 13(10); 1975 > Article

Journal of Korean Dental Association 1975;13(10):929-933.
Published online October 31, 1975.

Angle씨 Ⅲ급 부정교합의 치험례

이희조¹, 서정훈²

^¹서울대학교 치과대학
^²서울대학교 치과대학

A CASE REPORT OF ANGLE'S CLASSⅢ MALOCCLUSION

Hui-Jo Lee¹, Jeong-Hun Seo²

Abstract

A girl aged 15 years 6 months, had a class Ⅲ malocclusion characterized by severe maxillary anterior crowding and a retarded maxilla. Molar relationship was class Ⅲ on both sides, incisor overjet was - 2.9mm. and incisor overbite was 5.5mm. The patient underwent extraction of four first premolars and was trested with a multi-banded light force system. After 13 months, the patient gained a normal verbite-overjet relationship of anterior teeth and a class 1 molar relationship. Superimposition of pretreatment and posttreatment cephalograms upon the line SN registered at S showed backward downward rotation of the mandible.