颞下颌关节音的分形分析  

THE FRACTAL ANALYSIS OF TEMPOROMANDIBULAR JOINT SOUNDS

作　　者：刘振宅[1] 徐瑞[1] 张红梅[1] 李建涛[1] 张玉玮[2] 

机构地区：[1]天津医科大学生物医学工程系,天津300070 [2]天津医科大学口腔医学院,天津300070

出　　处：《南开大学学报（自然科学版）》2000年第2期111-115,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：颞下颌关节 ( TMJ)是人体最复杂的关节之一 ,有着复杂的生理功能 .颞下颌关节音 (颚开合时 TMJ产生的声音 )含有丰富的有关 TMJ状态的信息 .本文利用非线性动力学的混沌与分形理论对健康人和颞下颌关节内紊乱 ( TMJID)患者的颞下颌关节音信号进行了分析 .结果表明 ,颚开合时 TMJ产生的振动是一种复杂的混沌振动 ,由此产生的颞下颌关节音信号具有分形结构 ,其维数为分数 ,且健康人颞下颌关节音信号的相关维数值明显高于 TMJID患者 .Temporomandibular joint (TMJ) is one of the most complicated joints in human body. It performs complicated physiological function. Temporomandibular joint sounds (the sounds produced by TMJ when mandible open close) contain copious information concerned with states of TMJ. This paper analyzed the sound signal produced by TMJ of the normal and the temporomandibular joint internal derangement (TMJID) patient using theory of chaos and fractal in nonlinear dynamics. The results showed: the vibration produced by TMJ when mandible open close is a complicated chaotic vibration; temporomandibular joint sound signal produced has fractal framework; its correlation dimension is fraction; and the value of the correlation dimension of the TMJ sound signal of the normal is significantly higher than that of the TMJID patient.

关 键 词：颞下颌关节音 分维 分形 颞下颌关节疾病 TMJOA 

分 类 号：R782.6[医药卫生—口腔医学]