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- Title
Effects of a Liquid Diet on Temporomandibular Joint Mechano-receptors.
- Authors
Ishida, T.; Yabushita, T.; Soma, K.
- Abstract
Load during mastication is an important factor for the development and maintenance of mechano-receptor properties. The purpose of this study was to examine property changes in the rat TMJ mechano-receptors under conditions of liquid diet feeding and low articular load during the growth period. The hypothesis was that alterations in mastication of liquid diet might increase TMJ mechano-receptor sensitivity. Sixty-six two-week-old male Wistar rats were divided into two groups: a control group that was fed on whole pellets, and an experimental group that was fed a liquid diet. Electrophysiological recordings from the TMJ units were obtained from the trigeminal ganglion when the rats were 5, 7, and 9 weeks old. In the experimental group, TMJ mechano-receptor sensitivity increased, because the firing threshold gradually decreased and the maximum instantaneous frequency gradually increased. In conclusion, functional properties of TMJ mechano-receptors under low articular loading conditions cannot mature normally within the growth period.
- Subjects
TEMPOROMANDIBULAR joint; MECHANICAL loads; MASTICATION; LIQUID diet; MECHANORECEPTORS; DENTITION
- Publication
Journal of Dental Research, 2009, Vol 88, Issue 2, p187
- ISSN
0022-0345
- Publication type
Article
- DOI
10.1177/0022034508328626