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

J 2016

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

DOSEDĚLOVÁ, Hana, Kateřina ŠTĚPÁNKOVÁ, Tomáš ZIKMUND, Herve LESOT, Jozef KAISER et. al.

Basic information

Original name

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

Authors

DOSEDĚLOVÁ, Hana (203 Czech Republic), Kateřina ŠTĚPÁNKOVÁ (203 Czech Republic, belonging to the institution), Tomáš ZIKMUND (203 Czech Republic), Herve LESOT (250 France), Jozef KAISER (203 Czech Republic), Karel NOVOTNÝ (203 Czech Republic, belonging to the institution), Jan ŠTEMBÍREK (203 Czech Republic), Zdeněk KNOTEK (203 Czech Republic), Oldřich ZAHRADNÍČEK (203 Czech Republic) and marcela BUCHTOVÁ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of Anatomy, John Wiley & Sons, 2016, 0021-8782

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.182

RIV identification code

RIV/00216224:14310/16:00093776

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1111/joa.12490

UT WoS

000383724300002

Keywords in English

acrodont dentition; laser-induced breakdown spectroscopy; micro-computed tomography; reptiles

Abstract

V originále

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.

Links

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

DOSEDĚLOVÁ, Hana, Kateřina ŠTĚPÁNKOVÁ, Tomáš ZIKMUND, Herve LESOT, Jozef KAISER, Karel NOVOTNÝ, Jan ŠTEMBÍREK, Zdeněk KNOTEK, Oldřich ZAHRADNÍČEK and marcela BUCHTOVÁ. Age-related changes in the tooth–bone interface area of acrodont dentition in the chameleon. Journal of Anatomy. John Wiley & Sons, 2016, vol. 229, No 3, p. 356-368. ISSN 0021-8782. Available from: https://dx.doi.org/10.1111/joa.12490.

@article{1374291,
   author = {Dosedělová, Hana and Štěpánková, Kateřina and Zikmund, Tomáš and Lesot, Herve and Kaiser, Jozef and Novotný, Karel and Štembírek, Jan and Knotek, Zdeněk and Zahradníček, Oldřich and Buchtová, marcela},
   article_number = {3},
   doi = {http://dx.doi.org/10.1111/joa.12490},
   keywords = {acrodont dentition; laser-induced breakdown spectroscopy; micro-computed tomography; reptiles},
   language = {eng},
   issn = {0021-8782},
   journal = {Journal of Anatomy},
   title = {Age-related changes in the tooth–bone interface area of acrodont dentition in the chameleon},
   url = {http://onlinelibrary.wiley.com/doi/10.1111/joa.12490/pdf},
   volume = {229},
   year = {2016}
}

TY  - JOUR
ID  - 1374291
AU  - Dosedělová, Hana - Štěpánková, Kateřina - Zikmund, Tomáš - Lesot, Herve - Kaiser, Jozef - Novotný, Karel - Štembírek, Jan - Knotek, Zdeněk - Zahradníček, Oldřich - Buchtová, marcela
PY  - 2016
TI  - Age-related changes in the tooth–bone interface area of acrodont dentition in the chameleon
JF  - Journal of Anatomy
VL  - 229
IS  - 3
SP  - 356-368
EP  - 356-368
PB  - John Wiley & Sons
SN  - 00218782
KW  - acrodont dentition
KW  - laser-induced breakdown spectroscopy
KW  - micro-computed tomography
KW  - reptiles
UR  - http://onlinelibrary.wiley.com/doi/10.1111/joa.12490/pdf
N2  - 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.
ER  -

DOSEDĚLOVÁ, Hana, Kateřina ŠTĚPÁNKOVÁ, Tomáš ZIKMUND, Herve LESOT, Jozef KAISER, Karel NOVOTNÝ, Jan ŠTEMBÍREK, Zdeněk KNOTEK, Oldřich ZAHRADNÍČEK and marcela BUCHTOVÁ. Age-related changes in the tooth–bone interface area of acrodont dentition in the chameleon. \textit{Journal of Anatomy}. John Wiley \&{} Sons, 2016, vol.~229, No~3, p.~356-368. ISSN~0021-8782. Available from: https://dx.doi.org/10.1111/joa.12490.

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