A preliminary investigation of a method of detecting temporomandibular joint sounds.
A preliminary investigation of a method of detecting temporomandibular joint sounds.
复制标题
颞下颌关节声音检测方法的初步研究。
作者：
H. Yoshida;T. Sano;R. Kataoka;K. Takahashi;K. Michi
本研究建立了一种基于信噪比的颞下颌关节音检测方法。在比较从三个不同的网站在皮肤上的颞下颌关节信号，关节隆起被发现是最好的网站，用于检测颞下颌关节的声音，这个网站提供了最高的平均幅度在时域波形。然而，在内耳道处使用驻极体电容式麦克风提供了更宽的20分贝信噪比带宽，从而最大限度地减少了伪影。这种方法可能有助于记录颞下颌关节声音，以便使用频谱分析来鉴别诊断各种颞下颌关节疾病。
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.