无症状颞下颌关节的关节杂音声电图研究

Electrosonographic analysis of sounds emanating from temporomandibular joint without symptom

目的探讨无症状颞下颌关节（TMJ）的关节杂音特点。方法利用K6-Ⅰ系统记录并分析42侧无症状的TMJ在下颌运动时的关节杂音，研究杂音声电图的波形、频率范围、峰值频率及振幅。结果42侧无症状的TMJ中有25侧在下颌运动时产生关节杂音，根据杂音的声电图波形、频率范围、峰值频率及振幅等，可将TMJ杂音分为4种类型。结论无临床症状的TMJ在下颌运动时可产生杂音，主要分为4种不同的类型。

Objective To study the characteristic of joint sounds from temporomandibular joint （TMJ） without symptom during mandible movemenL Methods Joint sounds of 42 asymptomatic TMJ were recorded and analyzed with K6-Ⅰ system during mandible movement, the waveform, frequency range, peak frequency and amplitude of joint sounds electrosonogram were studied. Results Joint sounds were recorded in 25 joints of the 42 joints, 4 kinds of joint sounds were found according to the waveform, frequency range, peak frequency and amplitude of the eleetrosonography. Conclusions Joint sounds can be recorded in asymptomatic TMJ during mandible movement, 4 kinds of joints sounds were found according to the eleetrosonographic characteristics.