Journal article

Publication year: 2021

Pages: 894-902

Journal: Dental Materials Journal

Volume number: 40

Issue number: 4

ISSN: 0287-4547

Open access status: Gold

DOI Link: https://doi.org/10.4012/dmj.2020-231

Publisher: Japanese Society for Dental Materials and Devices

Abstract: 
Material characteristics can change significantly with increasing chewing velocity. As these in-vitro examinations are very time-consuming and cost-intensive, the application of finite element analysis (FEA) offers a suitable alternative for predicting the material behavior of complex specimen geometries under clinically relevant loads. Although FEA is applied within numerous dental investigations, there are only few studies available in which a nonlinear FEA is validated with real experiments. Therefore, the aim of the present study was to predict the mechanical behavior of a clinically close three-unit temporary bridge composed of polymethyl methacrylate (PMMA) in the left upper jaw with nonlinear FEA and to verify the prediction through validation experiments. In conclusion, simplifying assumptions of linear elastic material properties for polymeric materials should be avoided in FEA studies, because rate dependencies, stress relaxation and plastic flow are not considered. Additionally, precise preliminary investigations for material characterization are necessary.

Harvard Citation style: Schrader, P., Kolling, S., Schlenz, M., Wostmann, B. and Schmidt, A. (2021) Finite element simulation of fixed dental prostheses made from PMMA -Part II: Material modeling and nonlinear finite element analysis, Dental Materials Journal, 40(4), pp. 894-902. https://doi.org/10.4012/dmj.2020-231

APA Citation style: Schrader, P., Kolling, S., Schlenz, M., Wostmann, B., & Schmidt, A. (2021). Finite element simulation of fixed dental prostheses made from PMMA -Part II: Material modeling and nonlinear finite element analysis. Dental Materials Journal. 40(4), 894-902. https://doi.org/10.4012/dmj.2020-231