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  • Title: Sleep bruxism, an autonomic self-regulating response by triggering the trigeminal cardiac reflex.
    Author: Schames SE, Schames J, Schames M, Chagall-Gungur SS.
    Journal: J Calif Dent Assoc; 2012 Aug; 40(8):670-1, 674-6. PubMed ID: 22953526.
    Abstract:
    Sleep bruxism, an intensified manifestation of rhythmic masticatory muscle activity, characterized by tooth grinding or clenching during sleep, lacks a definitive physiological purpose. This paper posits that physiologically, sleep bruxism is an autonomic self-regulatory response to nighttime occurrences of tachycardia stemming from the brain experiencing microarousals during sleep. Sleep bruxism by triggering the trigeminal cardiac reflex leads to bradycardia. Rhythmic masticatory muscle activity-sleep bruxism, thereby, serves to slow the heart rate when brain microarousals cause tachycardia.
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