Microstructure of Pharyngeal Tooth Enameloid in the Parrotfish Scarus rivulatus (Pisces:Scaridae)

Carr, A., Kemp, A. R., Tibbetts, I. R., Truss, R. W. and Drennan, J. (2006) Microstructure of Pharyngeal Tooth Enameloid in the Parrotfish Scarus rivulatus (Pisces:Scaridae). Journal of Microscopy, 221 1: 8-16. doi:10.1111/j.1365-2818.2006.01526.x


Author Carr, A.
Kemp, A. R.
Tibbetts, I. R.
Truss, R. W.
Drennan, J.
Title Microstructure of Pharyngeal Tooth Enameloid in the Parrotfish Scarus rivulatus (Pisces:Scaridae)
Journal name Journal of Microscopy   Check publisher's open access policy
ISSN 0022-2720
Publication date 2006-01-01
Sub-type Article (original research)
DOI 10.1111/j.1365-2818.2006.01526.x
Volume 221
Issue 1
Start page 8
End page 16
Total pages 9
Editor Sue Hewitt
Place of publication Oxford, England
Publisher Royal Microscopical Society
Language eng
Subject C1
270503 Animal Anatomy and Histology
780105 Biological sciences
630300 Fish
279900 Other Biological Sciences
Abstract The microstructure of parrotfish pharyngeal teeth was examined using scanning electron microscopy to infer possible mechanical properties of the dentition with respect to their function. Parrotfish tooth enameloid is formed from fluorapatite crystals grouped into bundles. In the upper and lower pharyngeal jaw, the majority of the crystal bundles are orientated either perpendicularly or vertically to the enameloid surface. The only exception is in the trailing apical enameloid in which the majority of bundles are orientated perpendicularly or horizontally to the trailing surface. A distinct transition occurs through the middle of the apex between the leading and trailing enameloid in teeth of the lower pharyngeal jaw. This transition appears less distinct in the teeth of the upper pharyngeal jaw. Enameloid microstructure indicates that shear forces predominate at the apex of the teeth. In the remainder of the enameloid, the microstructure indicates that wear is predominant, and the shear forces are of less importance.
Keyword Microscopy
Biological Apatite
Biomaterial
Enameloid
Microstructure
Parrotfish Dentition
Family Scaridae
Jaw Apparatus
Microwear
Fishes
Reef
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 18:02:11 EST