View : 217 Download: 0
An investigation into structural behaviors of skulls chewing food in different occlusal relationships using FEM
- An investigation into structural behaviors of skulls chewing food in different occlusal relationships using FEM
- Lee Y.-K.; Chun Y.-S.
- Ewha Authors
- 전윤식; 김희선
- SCOPUS Author ID
- 전윤식; 김희선
- Issue Date
- Journal Title
- Clinical and Experimental Dental Research
- Clinical and Experimental Dental Research vol. 6, no. 3, pp. 277 - 285
- chewing simulation; FEA (finite element analysis); occlusal relationship; skull; structural behavior
- Document Type
Show the fulltext
- Objectives: This study aims to investigate the effect of different occlusal relationships on skull structural and mechanical behaviors through simulation of chewing food. Methods: Finite element (FE) skull models of occlusion for Class I, end-on Class II, and full-cusp Class II were generated. End-on Class II and full-cusp Class II were chosen as mild and severe Class II occlusions, respectively. A simplified food bolus was introduced between the upper and lower dentition of the right molars. Chewing food was simulated in the skulls by moving the mandible. An experiment was conducted to measure strains at selective locations and compared them to the analytical results for validation. Results: In the early stages of mandibular movement, masticatory forces predicted from the skull models without food were lower than the skull models with food but increased drastically after occluding teeth full enough. As a result, the relationship between masticatory force and mandible movement shows that there is no significant difference between the skull models with food and without food in the range of human masticatory force, approximately 250 N. In all the cases of skulls including a food bolus, stress was similarly propagated from the mandible to the maxilla and concentrated in the same regions, including the mandibular notch and alveolar bone around the lower molars. Conclusion: It is predicted that there is no significant difference of bite force–mandible movement relationships and stress distributions of skull and teeth, between end-on Class II and full-cusp Class II models. When simulating chewing activities on candy and carrot, it is also found that there is no difference of masticatory performance between Class II occlusions, from structural as well as mechanical perspectives. © 2020 The Authors. Clinical and Experimental Dental Research published by John Wiley & Sons Ltd.
- Appears in Collections:
- 의과대학 > 의학과 > Journal papers
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.