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The jaw elevator muscles develop the main forces used in mastication. The force generated during routine mastication of food such as carrots or meat is about 70 to 150 newtons (16 to 34 lbf ). The maximum masticatory force in some people may reach up to 500 to 700 newtons (110 to 160 lbf ).
Jaw claudication is pain in the jaw associated with chewing. It is a classic symptom of giant-cell arteritis, [1] [2] but can be confused with symptoms of temporomandibular joint disease, rheumatoid arthritis of the temporomandibular joint, myasthenia gravis, tumors of the parotid gland, or occlusion or stenosis of the external carotid artery.
Other parafunctional habits such as pen chewing, lip and cheek biting (which may manifest as morsicatio buccarum or linea alba), are also suggested to contribute to the development of TMD. [27] Other parafunctional activities might include jaw thrusting, excessive gum chewing, nail biting and eating very hard foods.
The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) [5] classifies the condition under "Other Specified Obsessive-Compulsive and Related Disorder" (300.3) as a body-focused repetitive behavior; the DSM-5 uses the more descriptive terms lip biting and cheek chewing (p. 263) instead of morsicatio buccarum.
Mastication (chewing) is a complex neuromuscular activity that can be controlled either by subconscious processes or by conscious processes. In individuals without bruxism or other parafunctional activities, during wakefulness the jaw is generally at rest and the teeth are not in contact, except while speaking, swallowing or chewing.
This constant motion may lead to jaw discomfort, muscle fatigue and contribute to jaw-related issues over time. Chewing gum can also affect your gastrointestinal system, causing you to swallow air ...
Chewing gum companies claim it allows them to tighten muscles. However, there’s little evidence to suggest it works. Experts say excessive chewing could actually make your jaw appear more square ...
Retrain oral, lingual, and facial muscles to facilitate correct resting posture of tongue, lips, and jaw; Establish mature swallowing patterns; Prevent relapses after orthodontic treatment; Improve the relationship between dental arches; reduce open bite and overjet; Maintain overall facial muscle tone needed for chewing, swallowing, and speech