Algorithm for Designing a Removable Complete Denture (RCD) Based on the FEM Analysis of Its Service Life

Abstract

(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.

Treatment Complications of Head and Neck Cancers and Rehabilitation Measures: A Narrative Review

“…They are also quicker to construct than hard acrylic dentures, with the trial fitting often being used as part of the final denture. In conclusion, flexible dentures are a highly desirable option due to their many advantages over traditional hard acrylic dentures [51][52][53][54][55][56][57].…”

Dental Material Selection for the Additive Manufacturing of Removable Complete Dentures (RCD)

“…Material selection is a relevant issue that is solved in various branches of science and technology, inter alia dental treatment (for example, manufacturing RCD). In this case, components are calculated according to the strength criterion (by the finite element method [ 1 ], as an example) and assigned margin factors. Therefore, reference data (primarily, manufacturers’ data sheets) should be taken into account.…”

Ranking Technologies of Additive Manufacturing of Removable Complete Dentures by the Results of Their Mechanical Testing

“…However, in addition to the technological aspects of manufacturing RCDs, it is important to evaluate their effectiveness as a dental structure in terms of deformation behavior under applying point loads. In this formulation, an important role is assigned to methods of computer simulation of deformation processes, including those under cyclic loading [6]. Nevertheless, conducting full-scale experiments is relevant to verify models as well as to design dental structures.…”