CAJ | 학술논문

目的通过MRI观察安氏Ⅲ类错(牙合)畸形患者翼外肌结构,探讨Ⅲ类错(牙合)畸形导致颞下颌关节紊乱病的潜在危险性.方法利用MRI对24例安氏Ⅲ类错(牙合)畸形患者(Ⅲ类错(牙合)组)和10名健康对照者(健康对照组)进行翼外肌成像研究.观察两组翼外肌病理结构及Ⅲ类错(牙合)组病理结构与颞下颌关节紊乱病体征的关系.结果Ⅲ类错(牙合)组翼外肌存在肌肉肥大、挛缩和萎缩等病理改变(36侧),并与健康对照组翼外肌病理改变(2侧)的差异有统计学意义(P＜0.01).安氏Ⅲ类错(牙合)畸形患者有翼外肌的病理改变,但多不伴颞下颌关节紊乱病的临床症状.结论安氏Ⅲ类错(牙合)畸形比正常(牙合)可更多地引起翼外肌的病理改变,有发生颞下颌关节紊乱病的潜在危险.
목적 통과MRI관찰안씨Ⅲ류착(아합)기형환자익외기결구,탐토Ⅲ류착(아합)기형도치섭하합관절문란병적잠재위험성.방법이용MRI대24례안씨Ⅲ류착(아합)기형환자(Ⅲ류착(아합)조)화10명건강대조자(건강대조조)진행익외기성상연구.관찰량조익외기병리결구급Ⅲ류착(아합)조병리결구여섭하합관절문란병체정적관계.결과Ⅲ류착(아합)조익외기존재기육비대、련축화위축등병리개변(36측),병여건강대조조익외기병리개변(2측)적차이유통계학의의(P＜0.01).안씨Ⅲ류착(아합)기형환자유익외기적병리개변,단다불반섭하합관절문란병적림상증상.결론안씨Ⅲ류착(아합)기형비정상(아합)가경다지인기익외기적병리개변,유발생섭하합관절문란병적잠재위험.
Objective To analyze the relationship between Class Ⅲ malocclusion and pathological changes in temporomandibular joint (TMJ) structures using magnetic resenonce imaging (MRI).Methods Twenty-four Class Ⅲ malocclusion adult patients and 10 normal control cases were included in the study.The characteristics of lateral pertygoid muscle ( LPM ) in the sample group and the control group were assessed.Results More pathological changes of LPM were found in Class Ⅲ malocclusion adult patients (36 TMJ).The changes included hypertrophy,atrophy and contracture.And there was no relation between the pathological changes of LPM and the symptom of temporomandibular disorders (TMD). Conclusions The frequency of pathological changes of LPM was greater in patients with Class Ⅲ malocclusion than in the control group.