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Physiology of Mastication

Posted on August 31st, 2009 by madhavi krishnan in Diet Logs

Cutting the food substances into small particles and grinding them into a soft bolus is known as Mastication. The incisors provide a strong cutting action, and the molars have a grinding action. Mastication is a first mechanical process to which the food is subjected. It is centrally regulated by the cortex and medulla in the brain. It involves a complex interplay of motor, sensory and secretory steps. It is partially voluntary and partially reflex.

Grinding of food during mastication continues in a somewhat rotary fashion, with the bolus usually being shifted occasionally from one side of the dental arch to the other.

When food is completely chewed, the jaw-closing muscles are inhibited to prevent the sudden banging of teeth. This terminates the chewing stroke.

Here are some good tips; take a reasonably sized bite only; chew with lips closed; don’t touch front teeth with tongue as you chew; allow complete grinding and sufficient salivary secretions for the formation of soft bolus.

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