A Finite Element Analysis Study of Edentulous Model with Complete Denture to Simulate Masticatory Movement

• Published in: Bioengineering (Basel) Vol. 11; no. 4; p. 336
• Main Authors: Lee, Jeong-Hyeon, Seo, Jeong-Hee, Park, Shin-Wook, Kim, Won-Gi, Jung, Tae-Gon, Lee, Sung-Jae
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.04.2024
• Subjects: Alveolar bone; Analysis; Biomechanical engineering; Biomechanics; CAD; Cancellous bone; Care and treatment; complete denture; Computed tomography; Computer aided design; Computer simulation; Cortical bone; Dental materials; Dentures; Diagnosis; Edentulism; Edentulous; Finite element analysis; Finite element method; Food; Health aspects; Masseter muscle; Mastication; masticatory movement; Mechanical loading; Mechanical tests; Mouth; Prostheses; Software; Teeth; Three dimensional models; Three dimensional motion; South Korea; United States > US; masticatory movement; complete denture; edentulous; finite element analysis
• ISSN: 2306-5354; 2306-5354
• DOI: 10.3390/bioengineering11040336

The purposes of this study are to establish and validate a finite element (FE) model using finite element analysis methods and to identify optimal loading conditions to simulate masticatory movement. A three-dimensional FE model of the maxillary and mandibular cortical bone, cancellous bone, and gingiva was constructed based on edentulous cone-beam-computed tomography data. Dental computer-aided design software was used to design the denture base and artificial teeth to produce a complete denture. Mesh convergence was performed to derive the optimal mesh size, and validation was conducted through comparison with mechanical test results. The mandible was rotated step-by-step to induce movements similar to actual mastication. Results showed that there was less than a 6% difference between the mechanical test and the alveolar bone-complete denture. It opened 10° as set in the first stage, confirming that the mouth closed 7° in the second stage. Occlusal contact occurred between the upper and lower artificial teeth as the mouth closed the remaining angle of 3° in the third stage while activating the masseter muscle. These results indicate that the FE model and masticatory loading conditions developed in this study can be applied to analyze biomechanical effects according to the wearing of dentures with various design elements applied.