Definition of Gnashing
Gnashing: Grinding the teeth. More formally called "bruxism."
Gnashing, or bruxism, is due to clenching of the teeth other than in chewing and is associated with forceful lateral or protrusive jaw movements. This results in grinding or rubbing the teeth together.
Gnashing usually occurs during sleep. It is sometimes so excessive that it damages the occlusal surfaces of the teeth, particularly the molar teeth, and may contribute to the temporomandibular joint (TMJ) syndrome.
The word "gnashing" comes from the Old Norse and likely is an example of onomatopoeia, an action named for the sound associated with it.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012
Medical Dictionary Definitions A - Z
Search Medical Dictionary
Mental Health Resources
- Could I Have Binge Eating Disorder?
- 10 Problem That Could Mean Adult ADHD
- Are We Close to a Cure for Cancer?
- Early Care for Your Premature Baby
- What to Eat When You Have Cancer
- When to Take More Pain Medication