Algorithm for Designing a Removable Complete Denture (RCD) Based on the FEM Analysis of Its Service Life
Grachev D.I. Ruzuddinov N.S. Arutyunov A.S. Akhmedov G.D. Dubova L.V. Kharakh Y.N. Panin S.V. Arutyunov S.D.
October 2022MDPI
Materials
2022#15Issue 20
(1) Background: The paper addresses the computer simulation and prediction of the service life of the base of removable complete dentures (RCDs) under typical loads caused by biting and chewing food. For this purpose, the finite element method (FEM) was used. It is assumed that various blocks of teeth, such as incisors, canines, premolars and molars, are subjected to cyclic impacts during a human life. (2) Methods: Both symmetric and asymmetric mastication (two- and one-sided loads, respectively) cases were considered. The load level was assumed to be 100 N, which corresponds to the average muscular compression force of typical human jaws. (3) Results: The FEM analysis of the stress–strain state evolution for RCDs under cyclic loads was carried out. Maps of equivalent lines were drawn for the denture base in terms of its durability. A multi-axial criterion was implemented to determine the number of cycles prior to failure by the mechanism of a normal opening mode crack. The FEM-based assessment of the service life of RCDs enabled us to establish the critical stress concentration areas, thereby allowing for further planning for the correction of an occlusal scheme or teeth inclinations. As a result, the service life of RCDs under cyclic loading can be improved. (4) Conclusions: An algorithm for designing RCDs in the case of edentulism based on the FEM simulation using commercial software as part of the procedure is proposed.
artificial , clinical reasoning , dental restoration failure , dental stress analysis , denture bases , denture design , edentulous , finite element analysis , jaw , prosthodontics , removable complete denture (RCD) , tooth
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Digital Dentistry Department, Moscow State University of Medicine and Dentistry, A.I. Yevdokimov, Moscow, 127473, Russian Federation
Department of Clinical Specialties, Al Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Propaedeutics of Prosthetics Technologies in Dentistry Department, Moscow State University of Medicine and Dentistry, A.I. Yevdokimov, Moscow, 127473, Russian Federation
Moscow State University of Medicine and Dentistry, Moscow, 127473, Russian Federation
Orthopedic Dentistry Department, Moscow State University of Medicine and Dentistry, A.I. Yevdokimov, Moscow, 127473, Russian Federation
Laboratory of Mechanics of Polymer Composite Materials, Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Tomsk, 634055, Russian Federation
Digital Dentistry Department
Department of Clinical Specialties
Propaedeutics of Prosthetics Technologies in Dentistry Department
Moscow State University of Medicine and Dentistry
Orthopedic Dentistry Department
Laboratory of Mechanics of Polymer Composite Materials
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