The relationship between the transverse discrepancy of the jaws and asymmetric growth of the condyles in children

Lee,  Jina Linton

doi:2013.51.6.302

J Korean Dent Assoc > Volume 51(6); 2013 > Article

The Journal of The Korean Dental Association 2013;51(6):302-312.
DOI: https://doi.org/10.22974/jkda.2013.51.6.001 Published online June 30, 2013.

임상가를 위한 특집 1 - 성장기 아동에서 상하악 폭경 부조화와 하악과두의 비대칭 성장과의 관계

이지나

이지나 치과의원

The relationship between the transverse discrepancy of the jaws and asymmetric growth of the condyles in children

Jina Linton Lee

Abstract

It has been established that disk displacement of the temporomandibular joint(TMJ) can cause mandibular asymmetry in growing subjects. One of the causes of internal derangement of TMJ seems to be the result of poor positioning of the joint structure in unilateral cross bite, and the subsequent occlusal trauma transferred to the functioning unit of the mandible, the joint and disc. Transverse discrepancy of the maxillary and the mandibular posterior dentoalveolar units was often found in mandibular asymmetric subjects. Most of the asymmetry in growing subjects becomes worse with further growth if left untreated. However once sufficient posterior overjet is gained through orthodontic treatment, many cases have shown improvement in facial asymmetry. Furthermore, the position of condyles in computed tomogram(con-beam CT) changed from anatomically unfavorable position to more concentric position.

Key Words: Transeverse discrepancy;TMJ disc displacement;Facial Asymmetry;CT evaluation;