Mathematical tools for recovery of the load on the fissure according to the micro-CT results.

Autor: Zelentsov VB; Laboratory for Mechanics of Biomaterials, Don State Technical University, Rostov-on-Don, 344000, Russia., Sadyrin EV; Laboratory for Mechanics of Biomaterials, Don State Technical University, Rostov-on-Don, 344000, Russia. Electronic address: e.sadyrin@sci.donstu.ru., Mitrin BI; Laboratory for Mechanics of Biomaterials, Don State Technical University, Rostov-on-Don, 344000, Russia., Swain MV; Laboratory for Mechanics of Biomaterials, Don State Technical University, Rostov-on-Don, 344000, Russia; Biomaterials and Bioengineering Department, Faculty of Dentistry, The University of Sydney, Camperdown, Sydney NSW, 2006, Australia.
Jazyk: angličtina
Zdroj: Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2023 Feb; Vol. 138, pp. 105625. Date of Electronic Publication: 2022 Dec 21.
DOI: 10.1016/j.jmbbm.2022.105625
Abstrakt: In the present paper X-ray microtomographic research of a molar tooth was conducted. The study revealed regions with a reduced mineral density in the vicinity of the fissure tip. The basic assumption investigated is that corrosion induced enamel mineral density decrease is enhanced by high tensile stresses generated by mechanical load on the occlusal surface of the tooth during crushing of food. Magnitude and location of tensile stress concentration occurs at the fissure tip and may be determined by solving the problem of the stress-strain state of the tooth crown enamel with a wedge-shaped notch. The study of stresses in the vicinity of fissure tip make it possible to construct the boundaries of enhanced enamel virtual fracture. Comparison of the sizes and locations of areas with a reduced enamel mineral density with the sizes and locations of areas of virtual enamel fracture made it possible to establish their approximate congruence. This circumstance made it possible to recreate by mathematical means the nature and magnitude of the force load on the lateral surface of the fissure. Degree of influence of the main parameters of the fissure on the geometrical characteristics of the virtual fracture, such as its area and diameters, were determined.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: