Relationship between TMJ sounds and Stmatognathic functions
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概要
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The purpose of this study is to clarify the differential diagnosis of TMJ dysfunction by analyzing signal characteristics of TMJ sounds. These sounds were recorded using two small accelerometers fixed on the skin of zygomatic arches of the patients who had TMJ dysfunction. The power spectra, the band width and the energy (squared integral) of the each signal were calculated using signal processing method by the FFT (Fast Fourier Transform) analyzer. Based on the comparison between the audible and non-audible TMJ sounds on the graphs, it was found that they had unique distribution with clear separated clusters. The following conclusions were obtained; 1) the most accurate signals were recorded from the zygomatic arches. 2) It is possible to classify audible and non-audible TMJ sounds using the signal processing method. 3) the changes of jaw moving velocity were concerned with characteristics of TMJ souns. 4) the silent periods were recognized in the action potentials of masticate muscles in relation to TMJ sounds. This methed can be used to understand the disordered condition of TMJ since the symptom of the patients agreed with the findings drawn from the analyzed signal characteristics.
- 一般社団法人 日本顎関節学会の論文
一般社団法人 日本顎関節学会 | 論文
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