The new treatment method for sleep associated bruxism by using electrical stimulation

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The purpose of this research is to develop a new treatment method for sleep associated bruxism by using electrical stimulation.1. We developed a new polysomnographic system for the measurement of bruxism using the multitelemeter system and the PCM data recorder.2. Sleep associated bruxism was detected by the polysomnograhic system which allows the simultaneous measurements of EMG,jaw movement, respiration, ECG,EOG and EEG.Experimental recordings were done for three nights in each subject. The data revealed that both grinding and clenching type bruxism events existed during sleep and each type of event was associated with the specific change of the sleep stage.4. Electrical stimulation for the treatment of bruxism was triggered by masseter muscle activity. The stimulation device was operated by battery. Appropriate stimulation signal intensity, frequency, time duration were studied, but we still need to improve the device for the fail-safe system.5. The result of this study exhibits the several physiological phenomena associated with bruxism during sleep. When the further studies are done, we will be able to develop the effective and harmless remedy for this sleep associated oral motor dysfunction-BRUXISM.