New Animal Model for Studying Mastication in Oral Motor Disorders

To identify the basic parameters of oral behavior in mice, we recorded the three-dimensional jaw movement trajectories and masseter and digastric muscle activities in freely behaving mice eating foods of various textures. Results showed that: (1) there are characteristic jaw movement patterns for fo...

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Bibliographic Details
Published inJournal of dental research Vol. 82; no. 4; pp. 318 - 321
Main Authors Okayasu, I., Yamada, Y., Kohno, S., Yoshida, N.
Format Journal Article
LanguageEnglish
Published United States SAGE Publications 01.04.2003
SAGE PUBLICATIONS, INC
Subjects
Animals
Bite Force
Dentistry
Electromyography
Jaw - physiology
Male
Mastication
Mastication - physiology
Masticatory Muscles - physiology
Mice
Mice, Inbred C3H - physiology
Models, Animal
Motor Activity
Movement
freely behaving mouse
food texture
masticatory muscle activity
chewing rhythm
masticatory jaw movement
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Summary:To identify the basic parameters of oral behavior in mice, we recorded the three-dimensional jaw movement trajectories and masseter and digastric muscle activities in freely behaving mice eating foods of various textures. Results showed that: (1) there are characteristic jaw movement patterns for food intake and mastication; (2) the pattern in a chewing cycle may be divided into opening, closing, and protruding (power) strokes; and (3) food texture affects basic patterns of jaw movement, muscle activities, and chewing rhythms. The oral motor behavior of mice appears identical to those of other experimental animals, so mice are appropriate animal models for the study of mastication.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0022-0345
1544-0591
DOI:10.1177/154405910308200415