Fracture mechanism of coronal teenage dentin

The structure of coronal teenage dentin and the development of cracks in it are studied on microand nanolevels. The material is found to fail according to a ductile mechanism on a microlelvel and according to a ductile–brittle mechanism on a nanoscale. This behavior is similar to the failure of a po...

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Bibliographic Details
Published in:Russian metallurgy Metally 2017-10, Vol.2017 (10), p.879-883
Main Authors: Panfilov, P. E., Kabanova, A. V., Borodin, I. N., Guo, J., Zang, Z.
Format: Article
Language:English
Subjects:
Applied Problems of Strength and Plasticity
Chemistry and Materials Science
Crack propagation
Deformation mechanisms
Dentin
Ductile-brittle transition
Elastic deformation
Fracture mechanics
Materials Science
Metallic Materials
Polyethylene films
Rubber
Viscoelasticity
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Summary:The structure of coronal teenage dentin and the development of cracks in it are studied on microand nanolevels. The material is found to fail according to a ductile mechanism on a microlelvel and according to a ductile–brittle mechanism on a nanoscale. This behavior is similar to the failure of a polyethylene film and rubber, when significant elastic and irreversible deformation precedes crack growth. The viscoelastic behavior can be considered as the reaction of dentin to an applied mechanical load.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029517100172