Morphological studies on the teeth of an edible frog (Rana nigromaculata nigromaculata).
Open Access
- 1 January 1986
- journal article
- Published by Japanese Association for Oral Biology in Japanese Journal of Oral Biology
- Vol. 28 (1) , 102-108
- https://doi.org/10.2330/joralbiosci1965.28.102
Abstract
Teeth of the adult Rana nigromaculata nigromaculata are found on the premaxilla, maxilla and vomer of the upper jaw. The crowns have a lingual and labial cusp.The enamel which covers the crown extends cervically until it reaches the enamel-pedicel junction. The ultrastrctural organization of the enamel in the cusps where the enamel matrices are oriented at right angles to the tooth surface, differs from that in the e amel-pedicel junction region where the matrices are oriented at irregular angles. The dentine consists of three layers, an outmost layer near the enamel-dentine junction, a peripheral layer, and a layer near to the pulp. These layers contain dental tubules and mineral and organic matrices.The pulp has a small number of odontoblasts, a cell-free and cell-rich zone and fibroblasts.Keywords
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