The case study of masticatory force with food from full skull and partial model

Abstract

The aim of this paper was to investigate structural and mechanical behavior of mastication of skull with food. Full skull model was performed by rotational displacement control whereas the partial model was performed by linear displacement control in each case of (a) No food and (b) Food. FE models of full skull model and partial model were generated based on CT images. Material properties for teeth, PDL, cortical bone, and cancellous bone were applied to the corresponding parts. Based on the analyses of full skull model, von Mises stress distributions and max. strain distribution were obtained and compared to experimental data for validation of modeling approaches. The stress distribution by occlusal force was propagated to the body of mandible for (a) No food and (b) Food. It was also propagated to the maxilla, nasal bone, frontal bone, zygomatic bone, and temporal bone. The tendency of stress and strain distribution from teeth to maxilla and mandible could be identified to be compared with different experiment. The suggested FE procedure could be used to evaluate structural and mechanical behavior of skull with the full skull model and partial model effectively. © 2017, Korean Society for Precision Engineering and Springer-Verlag GmbH Germany.