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The Difference of Structural State and Deformation Behavior between Teenage and Mature Human Dentin
Joint Authors
Panfilov, Peter
Zaytsev, Dmitry
Antonova, Olga V.
Alpatova, Victoria
Kiselnikova, Larissa P.
Source
International Journal of Biomaterials
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-02-16
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Objective.
The cause of considerable elasticity and plasticity of human dentin is discussed in the relationship with its microstructure.
Methods.
Structural state of teenage and mature human dentin is examined by using XRD and TEM techniques, and their deformation behavior under compression is studied as well.
Result.
XRD study has shown that crystallographic type of calcium hydroxyapatite in human dentin (calcium hydrogen phosphate hydroxide Ca9HPO4(PO4)5OH; Space Group P63/m (176); a = 9,441 A; c = 6,881 A; c / a = 0,729; Crystallite (Scherrer) 200 A) is the same for these age groups.
In both cases, dentin matrix is X-ray amorphous.
According to TEM examination, there are amorphous and ultrafine grain phases in teenage and mature dentin.
Mature dentin is stronger on about 20% than teenage dentin, while teenage dentin is more elastic on about 20% but is less plastic on about 15% than mature dentin.
Conclusion.
The amorphous phase is dominant in teenage dentin, whereas the ultrafine grain phase becomes dominant in mature dentin.
Mechanical properties of human dentin under compression depend on its structural state, too.
American Psychological Association (APA)
Panfilov, Peter& Zaytsev, Dmitry& Antonova, Olga V.& Alpatova, Victoria& Kiselnikova, Larissa P.. 2016. The Difference of Structural State and Deformation Behavior between Teenage and Mature Human Dentin. International Journal of Biomaterials،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1105464
Modern Language Association (MLA)
Panfilov, Peter…[et al.]. The Difference of Structural State and Deformation Behavior between Teenage and Mature Human Dentin. International Journal of Biomaterials No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1105464
American Medical Association (AMA)
Panfilov, Peter& Zaytsev, Dmitry& Antonova, Olga V.& Alpatova, Victoria& Kiselnikova, Larissa P.. The Difference of Structural State and Deformation Behavior between Teenage and Mature Human Dentin. International Journal of Biomaterials. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1105464
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1105464