Grinding and gnashing regarding the teeth. Bruxism is due to clenching associated with the teeth besides in chewing and it is related to forceful lateral or protrusive jaw motions. This results in the grinding or rubbing together of teeth. Bruxism can injure teeth and trigger regional pain in the lips or jaw and will subscribe to temporomandibular joint (TMJ) problem.
"grinding tooth instinctively," from Greek ebryxa, aorist cause of brykein "to gnash tooth."
The tendency for an animal to grit its teeth.
involuntarily or unconsciously clenching or grinding one's teeth, typically during sleep