Izvestiya of Saratov University.

Mathematics. Mechanics. Informatics

ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)

For citation:

Sadyrin E. V., Nikolaev A. L., Evsyukov A. P., Nizhnik D. A., Vasiliev A. S. Characterization of properties for modern dental materials and bordering tissues. Part 1. Mechanical properties. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2025, vol. 25, iss. 4, pp. 555-565. DOI: 10.18500/1816-9791-2025-25-4-555-565, EDN: SRTEFP

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Published online: 
28.11.2025
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Language: 
English
Heading: 
Mechanics
Article type: 
Article
UDC: 
531.7
DOI: 
10.18500/1816-9791-2025-25-4-555-565
EDN: 
SRTEFP

Characterization of properties for modern dental materials and bordering tissues. Part 1. Mechanical properties

Autors: 
Sadyrin Evgeniy V., Don State Technical University
Nikolaev Andrey L., Don State Technical University
Evsyukov Alexander P., Don State Technical University
Nizhnik Daria A., Don State Technical University
Vasiliev Andrey S. , Don State Technical University
Abstract: 

In the present paper, an ex vivo nanoindentation study of the mechanical properties of fillings made of composite resin and glass ionomer cement, as well as infiltrated enamel and tissues in their vicinity, was carried out, followed by a comparison of the results with the properties of the sound tissues. For a more in-depth interpretation of the obtained experimental data, optical images of the sample surface structure were obtained. Composite fillings have been shown to be superior to glass ionomer ones due to greater similarity in mechanical properties to the sound enamel and fewer internal structure artifacts. The possibility of the polymerization stress appearing in dentine adjacent to the filling was demonstrated. Pathologically altered demineralized enamel treated with polymer infiltrant, despite a slight decrease in the values of properties compared to sound tissue, turned out to be generally close to it both in terms of the mechanical characteristics, which indicates the high potential for the use of polymer infiltration in dental practice for the treatment of early caries.

Key words: 
tooth
enamel
dentine
composite resin
glass ionomer cement
polymer infiltrant
filling
nanoindentation
Acknowledgments: 
This work was supported by the grant of the Russian Science Foundation (project No. 25-29-00829, https://rscf.ru/en/project/25-29-00829/). The authors thank S. Yu. Maksyukov for assistance in performing ex vivo sealing of the samples. Nanoindentation was carried out using the equipment of the Resource Center for Collective Use of the Scientific and Educational Center for Functional Gradient Materials of Don State Technical University (RCCP DSTU).
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Received: 
19.02.2025
Accepted: 
18.06.2025
Published: 
28.11.2025
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