백서 하악골의 후방 이동이 과두에 미치는 영향에 관한 실험적 연구

• 영문명: An Experimental Study on the Effect of Posterior Displacement of the Mandible on the Temporomandibular Joint in Rats
• 발행기관: 대한치과교정학회
• 저자명: 박경진(Kyung-Jin Park)
• 간행물 정보: 『The Korean Journal of Orthodontics』제10권 제1호, 29~36쪽, 전체 8쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1980.12.31

영문 초록

Inclined plane, one of frequently used orthodontic appliances, may cause posterior displacement of mandible and injure the normal growth of temporomandibular joint. So author carried out the mandibular posterior displacement experimentally indyced by inserting inclined plane in the rat incisors in order to investigte the histological reactions occuring in the temporomandibular joint of experimental animals. Following results were obtained. 1. The posterior displacement of condyle resulted in the widening of anterior synovial space with anterior condylar hyperplasia and posterior condylar atrophy. In addition, tissue changes were more severe in young rats than in adult rats. 2. The tissue reactions were localized only to condylar head and there were no evidence of traumatic features in young rats. In adult rats, hemorrhage was an additional finding 1 week after experiment. 3. The remodelling processes were accmpanied by the increasing or reduction of fibrous layer and subsequent replacement by cartilage layer occured massively and abruptly in young rats, it occured slightly and slowly in adylt rats. 4. The remodelling process of injured condyle occured from 1 week to 4 weeks after experiment and completed between 8 weeks after experiment.