電磁界による下顎頭動態記録装置の開発 : 第1報装置の概要と特性について

概要

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It is very important for clinical diaguaosis to record attd analyze condylar movement in cranio-mandibular disorders. Recently, many devices have been developed for this purpose. These devices can measure precisely condylar movements, but are difficult to manipulate. We have developed a simple device which substitute a palpation of the posterior aspect of the TMJ. We modified the Cardiokymograph which use electro-magnetic field. The characteristics of this device are the use of a freqtuency-variable crystal-controlled osillator, and the application of the coil itself which is a part of the osillator as a probe. We tested many electrical characteristics of this device and assured the effectiveness, that is, sensitivity, derectivity, frequency response characteristic, transient response characteristic, and temperature response characteristic. We tried to insert a probe into the external auditory meatus, and record condylar movetnent as a positional change of the skin. It seems to suggest that our device can recoud a feature of condylar movement.
日本補綴歯科学会の論文
1990-04-01