Structure, ultrastructure et analyses physico-chimiques des tissus durs dentaires des vipéridés

Authors

  • A.L Kattie
  • M Cottrel
  • M.T Le Cabellec
  • L.M Kerebel

Keywords:

Viperidae, fangs, enameloid, dentine, structure, ultrastructure, physico-chemical analyses

Abstract

The present study, using classical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, infra-red spectroscopy, has shown the dental hard tissues of the fangs of Viperidae (poisonous serpents with terrestrial or semi-aquatic habits) to be constituted of:

a calcified outer layer, 0.4 µm thick, made of very small needle-like crystals, randomly distributed. The calcified outer layer contains organic invaginations inducing pores at the surface and many collagen fibres uncompletely mineralized, which may suggest enameloid.

a calcified inner layer, in the wall of the poison canal. The calcified inner layer, 0.6 µm thick, is constituted of very small crystals, which are parallel to each other and perpendicular to the calcified outer layer. It might be the inner layer of enameloid.

an orthodentine, whose tubules present a special lateral branching system resembling a fish-bone. The TEM data, which show the dentine to be constituted of very small ill-defined crystals and uncompletely mineralized collagen fibres are corroborated by chemical analyses which reveal a poorly mineralized apatite with high carbonate content.

Downloads

Published

2020-04-17

Issue

Vol. 32 No. 4 (1989)

Section

Original Research Articles

License

I hereby certify that the authors of the above manuscript have all:

1. Conceived, planned, and performed the work leading to the report, or interpreted the evidence presented, or both;

2. Written the report or reviewed successive versions and shared in their revisions; and

3. Approved the final version.

Further, I certify that:

1. This work has not been published elsewhere and is not under revision in another journal;

2. Humane procedures have been followed in the treatment of experimental animals (if applicable);

3. Investigations in humans was done in accordance with the ethical standards of the responsible committee on human experimentation or with the Helsinki Declaration (if applicable).

4. This paper has been carefully read by a native English speaker who is familiar with the field of work (this applies to authors who are not fluent in English); and

5. The copyright of the article is transferred from the authors to the Bulletin du Groupement International pour la Recherche Scientifique en Stomatologie et Odontologie upon acceptance of the manuscript.