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Numerical and Experimental Study of Dental Fiber Post Adhesive Bond Strength

Natalia T. Gavryushina 1, Anna S. Bobrovskaia 2, and Olga O. Baryshnikova 1
1. Bauman Moscow State Technical University, Moscow, Russi
2. A.I. Evdokimov Moscow State University of Medicine and Dentistry, 127473, Moscow, Russia

Abstract—A numerical and experimental study of the new method for determining the adhesive bond strength of fiber posts, called by the authors the "torque-out" test, is considered. In contrast to the known methods of testing the push-out test and the pull-out test, in which a tensile or compressive load is applied to the sample, the load is produced by the torque. Samples for determining the adhesive strength of a particular post-cement combination can be made in a clinical setting without using of special equipment. Testing of samples is carried out on a compact installation developed by the authors, designed to evaluate the adhesive strength of a joint in clinical conditions according to the magnitude of the limiting torque. The numerical study of the adhesive strength of the connection of fiber posts and luting cements and the comparison of the stress-strain state arising in the samples during the push-out and torque-out tests is performed using mathematical modeling such as the finite element method. 

Index Terms—fiber post, adhesive bond strength, finite element method, torque-out test

Cite: Natalia T. Gavryushina, Anna S. Bobrovskaia, and Olga O. Baryshnikova, "Numerical and Experimental Study of Dental Fiber Post Adhesive Bond Strength," International Journal of Mechanical Engineering and Robotics Research, Vol. 10, No. 3, pp. 157-162, March 2021. DOI: 10.18178/ijmerr.10.3.157-162

​Copyright © 2021 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.