Cementum structure in Beluga whale teeth

Stock, S. R.; Finney, L. A.; Telser, A.; Maxey, E.; Vogt, S.; Okasinski, J. S.

doi:10.1016/j.actbio.2016.11.015

Cementum structure in Beluga whale teeth

Journal Article · Wed Nov 09 00:00:00 EST 2016 · Acta Biomaterialia

DOI:https://doi.org/10.1016/j.actbio.2016.11.015· OSTI ID:1417301

Stock, S. R. ^[1]; Finney, L. A. ^[2]; Telser, A. ^[1]; Maxey, E. ^[2]; Vogt, S. ^[2]; Okasinski, J. S. ^[2]

Northwestern University, Chicago, IL (United States). Dept. of Cell and Molecular Biology, Feinberg School of Medicine
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

We report that a large fraction of the volume of Beluga whale (Delphinapterus leucas) teeth consists of cementum, a mineralized tissue which grows throughout the life of the animal and to which the periodontal ligaments attach. Annular growth bands or growth layer groups (GLGs) form within Beluga cementum, and this study investigates GLG structure using X-ray fluorescence mapping and X-ray diffraction mapping with microbeams of synchrotron radiation. The Ca and Zn fluorescent intensities and carbonated hydroxyapatite (cAp) diffracted intensities rise and fall together and match the light-dark bands visible in transmitted light micrographs. Within the bands of maximum Ca and Zn intensity, the ratio of Zn to Ca is slightly higher than in the minima bands. Further, the GLG cAp, Ca and Zn modulation is preserved throughout the cementum for durations >25 year.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1417301

Alternate ID(s):: OSTI ID: 1415539

Journal Information:: Acta Biomaterialia, Journal Name: Acta Biomaterialia Journal Issue: C Vol. 48; ISSN 1742-7061

Publisher:: Acta Materialia, Inc.Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Incremental distribution of strontium and zinc in great ape and fossil hominin cementum using synchrotron X-ray fluorescence mapping Dean, Christopher; Le Cabec, Adeline; Spiers, Kathryn Journal of The Royal Society Interface, Vol. 15, Issue 138 https://doi.org/10.1098/rsif.2017.0626	journal	January 2018
Incremental distribution of strontium and zinc in great ape and fossil hominin cementum using synchrotron X-ray fluorescence mapping Dean, Christopher; Le Cabec, Adeline; Spiers, Kathryn Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-00341	text	January 2018

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Related Subjects

36 MATERIALS SCIENCE
59 BASIC BIOLOGICAL SCIENCES
Ca
Zn
cementum
dentin
growth layer groups (GLGs)
odontocete
synchrotron radiation
x-ray diffraction
x-ray fluorescence

Cementum structure in Beluga whale teeth

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References (25)

Cited By (2)

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