DOI:

10.37988/1811-153X_2025_1_72

Numerical study of the stress-strain state of surgical templates

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Authors

  • D.S. Sarkisov 1, postgraduate at the Institute of Digital Dentistry
    ORCID: 0000-0002-2005-0473
  • A.G. Stepanov 1, Doctor of Science in Medicine, professor of the Institute of Digital Dentistry
    ORCID: 0000-0002-6543-0998
  • M.V. Dzhalalova 2, PhD in Physics and Mathematics, senior researcher of the Institute of Mechanics
    ORCID: 0009-0004-8866-2937
  • S.V. Apresyan 1, Doctor of Science in Medicine, professor, director of the Institute of Digital Dentistry
    ORCID: 0000-0002-3281-707X
  • O.P. Korolkova 2, researcher at the Institute of Mechanics
    ORCID: 0000-0001-5559-6014
  • 1 RUDN University, 117198, Moscow, Russia
  • 2 Lomonosov Moscow State University, 119991, Moscow, Russia

Abstract

The paper considers the designs of surgical templates for dental implantation in the absence of two teeth (included defect). Virtual models of 2 template variants were selected: a universal template modeled by software in automatic mode (option 1) and a template modified in manual mode (option 2). In calculations in all variants, the force exerted on the template when drilling at the specified application points was 30 N. The numerical studies used the physico-mechanical values of materials used in the technology of additive manufacturing of navigational surgical templates after sterilization. The problem was solved in a linear elastic formulation by the finite element method. Comparison of the numerical calculations for displacements and stresses for different designs of templates (option 1 and option 2) from the materials FormLabs Dental SG Resin (Formlabs, USA) and HARZLabs Yellow Clear PRO (Russia) showed a clear advantage of option 2 (reinforced template), and the stresses values turned out to be the same for both versions of templates made from foreign and domestic materials; the difference in displacements was 7—8%.

Key words:

surgical template, numerical study, dental implantation, mathematical modeling, finite element method

For Citation

[1]
Sarkisov D.S., Stepanov A.G., Dzhalalova M.V., Apresyan S.V., Korolkova O.P. Numerical study of the stress-strain state of surgical templates. Clinical Dentistry (Russia).  2025; 28 (1): 72—77. DOI: 10.37988/1811-153X_2025_1_72

References

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Received

July 22, 2024

Accepted

February 28, 2025

Published on

April 7, 2025