Patient-specific finite element analysis of viscoelastic masticatory mucosa
- 1Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
- 2Oral Prosthetic Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University, Tokyo, Japan
- Noriyuki Wakabayashi, Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8549, Japan. Email: wakabayashi.rpro{at}tmd.ac.jp
Abstract
The purpose of this study was to analyze the stress and strain inside of the oral mucosa in partially-edentulous patients. The patient-specific finite element models of the mucosa and the bone were constructed using the CT images and in-vivo surface measurement during a continuous load. The mean initial shear modulus of 8.3 × 10–5 (GPa) and the mean relaxation time of 503 (s) were determined as the viscoelastic properties of the mucosa. The increase of the highest maximum compressive strain during the continuous loading was observed in all the patients, however; the intensity of strain was not in accordance with the thickness of the mucosa. It is suggested that the variations of the morphology and the initial modulus of the mucosa should be considered in the mathematical approaches to detect the mechanical responses of the oral mucosa.
Article Notes
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Declaration of conflicting interests The authors confirm that they have no conflict of interest with respect to the manuscript content or funding.
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Funding This research received no specific grant from any funding agency in the commercial sectors.
- © The Author(s) 2013
