Age-related changes in the tooth-bone interface area of acrodont dentition in the chameleon

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378041%3A_____%2F16%3A00468143" target="_blank" >RIV/68378041:_____/16:00468143 - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/16:00468143 RIV/00216224:14310/16:00093776 RIV/62157124:16170/16:43874098 RIV/00216305:26620/16:PU121434 RIV/00843989:_____/16:E0105540

Result on the web

<a href="http://dx.doi.org/10.1111/joa.12490" target="_blank" >http://dx.doi.org/10.1111/joa.12490</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/joa.12490" target="_blank" >10.1111/joa.12490</a>

Result language

angličtina

Original language name

Age-related changes in the tooth-bone interface area of acrodont dentition in the chameleon

Original language description

Chameleon teeth develop as individual structures at a distance from the developing jaw bone during the pre-hatching period and also partially during the post-hatching period.However, in the adult, all teeth are fused together and tightly attached to the jaw bone by mineralized attachment tissue to form one functional unit.Tooth to bone as well as tooth to tooth attachments are so firm that if injury to the oral cavity occurs, several neighbouring teeth and pieces of jaw can be broken off. We analysed age-related changes in chameleon acrodont dentition, where ankylosis represents a physiological condition, whereas in mammals, ankylosis only occurs in a pathological context. The changes in hard-tissue morphology and mineral composition leading to this fusion were analysed. For this purpose, the lower jaws of chameleons were investigated using X-ray micro-computed tomography, laser-induced breakdown spectroscopy and microprobe analysis. For a long time, the dental pulp cavity remained connected with neighbouring teeth and also to the underlying bone marrow cavity.Then, a progressive filling of the dental pulp cavity by a mineralized matrix occurred, and a complex network of non-mineralized channels remained. The size of these unmineralized channels progressively decreased until they completely disappeared, and the dental pulp cavity was filled by a mineralized matrix over time.Moreover, the distribution of calcium, phosphorus and magnesium showed distinct patterns in the different regions of the tooth-bone interface, with a significant progression of mineralization in dentin as well as in the supporting bone. In conclusion, tooth-bone fusion in chameleons results from an enhanced production of mineralized tissue during post-hatching development.Uncovering the developmental processes underlying these outcomes and performing comparative studies is necessary to better understand physiological ankylosis; for that purpose, the chameleon can serve as a useful model species.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EA - Morphology and cytology

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Anatomy

ISSN

0021-8782

e-ISSN

—

Volume of the periodical

229

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

356-368

UT code for WoS article

000383724300002

EID of the result in the Scopus database

2-s2.0-84982933436