Definition of bruxism in US English:



  • Involuntary habitual grinding of the teeth, typically during sleep.

    • ‘Sleep bruxism is forceful grinding of the teeth during sleep and about which the subject is unaware.’
    • ‘He was a prolific author and actively contributed to the scientific literature on phobias, pain, habit control, anxiety management, healing, bruxism, and hypnotic techniques.’
    • ‘Patients with tension-type headache do not typically report any visual disturbance, constant generalized pain, fever, stiff neck, recent trauma, or bruxism.’
    • ‘Sally acknowledged a history of bruxism, and I suggested a referral to her dentist for fitting of a bite plate plus an anti-inflammatory medication.’
    • ‘Orthodontic problems and bruxism are more common than in the general population.’


1930s: from Greek brukhein ‘gnash the teeth’ + -ism.