clenching(redirected from clench)
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Etymology: ME, clenchen
the clamping and pressing of the jaws and teeth together in centric occlusion, frequently associated with acute nervous tension or physical effort, such as pushing or lifting a heavy object or performing a difficult task. See also bruxism.
1. Forcible, repeated contraction of the jaw muscles with the teeth in contact. This causes pulsating, bilateral contractions of the temporalis and pterygomasseteric muscles. It may be done consciously, subconsciously while awake, or during sleep. See: bruxism
2. Tightly closing the fist.
Nonfunctional tooth clamping in centric occlusion.