一种检测颞下颌关节声音方法的初步研究。
A preliminary investigation of a method of detecting temporomandibular joint sounds.
作者信息
Yoshida H, Sano T, Kataoka R, Takahashi K, Michi K
机构信息
Department of Stomatology, Institute of Clinical Medicine, University of Tsukuba, Japan.
出版信息
J Orofac Pain. 1994 Winter;8(1):73-9.
This study established a method of detecting temporomandibular joint sounds based on signal-to-noise ratios. After comparing the temporomandibular joint signals obtained from three different sites over the skin, the articular eminence was found to be the best site for detecting temporomandibular joint sounds; this site provided the highest mean amplitude in the time domain waveform. However, using an electret condenser microphone at the intra-auditory meatus provided a broader, 20-decibel signal-to-noise bandwidth, which resulted in minimized artifacts. This method may be useful for recording temporomandibular joint sounds in the differential diagnosis of various temporomandibular joint conditions using spectral analysis.
本研究建立了一种基于信噪比检测颞下颌关节声音的方法。在比较从皮肤表面三个不同部位获得的颞下颌关节信号后，发现关节结节是检测颞下颌关节声音的最佳部位；该部位在时域波形中提供了最高的平均振幅。然而，在耳道内使用驻极体电容式麦克风可提供更宽的20分贝信噪比带宽，从而使伪影最小化。这种方法可能有助于在使用频谱分析对各种颞下颌关节疾病进行鉴别诊断时记录颞下颌关节声音。
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