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Chapter-18 Mastication, Deglutition and Phonation

BOOK TITLE: Manual for Dental Hygienist

Author
1. Awasthi Maj Gen PN
ISBN
9789352702282
DOI
10.5005/jp/books/14199_19
Edition
1/e
Publishing Year
2018
Pages
5
Author Affiliations
1. Armed Forces Medical College (AFMC), Pune, Maharashtra, India; Indian Army Dental Corps, Dental Council of India; Manav Rachna Dental College, Faridabad, Haryana, India, Armed Forces Medical College (AFMC), Pune, Maharashtra, India; Indian Army Dental Corps; Dental Council of India; Manav Rachna Dental College, Faridabad, Haryana, India
Chapter keywords
Mastication, deglutition, phonation, aphasia, anarthria, dysarthria, agnosia, swallowing, speech

Abstract

The chapter delves upon the concepts of mastication, deglutition and Phonation. Mastication is the process of cutting and breaking down the large food particles into small particles and grinding them into a soft bolus. It is mostly a reflex process. It is the result of a highly complex neuromuscular activity. The process of swallowing is defined as deglutition. The process of swallowing has been divided into three stages for better understanding; oral stage, pharyngeal stage, and esophageal stage. Phonation or speech is an expression of thought by production of articulate sounds bearing a definite meaning. It is brought about by coordinated activity of different parts of brain, particularly the motor, sensory and psychic areas. The disorders of speech are aphasia, anarthria or dysarthria, and agnosia.

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