Mastication


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Mastication

 

the mechanical processing of food in the oral cavity; consists of grinding and mixing the food with saliva. The process entails the biting off of food and mashing, crushing, and grinding it between the teeth. In animals, including man, mastication is accomplished by vertical, front-to-back, and lateral movements of the lower jaw in relation to the upper jaw, brought about by the contraction of the masticatory muscles. Movements of the tongue and cheeks, which shift the food around the oral cavity, are of auxiliary significance. Considerable pressure is exerted on the teeth during mastication.

Mastication is a complex coordinated action, regulated by a special nerve center in the medulla oblongata and also by the subcortical and cortical sections of the cerebral hemisphere. Damage to the masticatory apparatus, particularly anodontia or tooth disorders, interferes with the normal processing and assimilation of food and may cause disorders in the digestive tract.

References in periodicals archive ?
This cross-sectional survey, hence, aimed to assess the practice of local dental practitioners regarding the evaluation of muscles of mastication during TMJ evaluation.
Only the last four chews were considering, however, because the participant could direct the mastication in an attentive and controlled manner, as he or she was under evaluation and filming, according to the proposed protocol 7.
137 For mastication 21 10 For speech 01 5 Others 0 0 Total 40 30 Table 16 Are you Content with Male Female P value your Oral Prosthesis?
Because chapparal ecosystems are often found near California's urban areas, they are a major focus for fuel reduction efforts such as mastication treatments and controlled burns.
difficulty in opening the jaws and bilateral atrophy of muscles of mastication and its response to immunosuppressive treatment with corticosteroids, which is in agreement with earlier findings.
Surgical treatment is indicated when the excess tissue interferes with mastication, speech or more commonly for esthetic reasons.
All muscles of mastication of left side were also fibrosed (Figure-2).
La maladie se traduit par des lesions entraEnent une salivation intense et filante, des troubles de la mastication, des boiteries et des chutes de production laitiere.
Misalignment of the teeth in the upper and lower jaw; appearing unattractive and reducing efficiency of mastication (chewing), it may cause accumulaA[degrees]tion of debris between teeth.
The main purpose of mastication is to reduce the size of ingested food to produce a bolus that can be easily swallowed.
Normal mastication is characterized by unilateral cycles, with periodic food alternation on both sides of the dental arches, although fewer unilateral cycles have been observed with homogeneous soft foods.