Author： Fang Y. Lagravère M. O. Carey J. P. R. Major P. W. Toogood R. R.
Publisher： Taylor & Francis Ltd
ISSN： 1025-5842
Source： Computer Methods in Biomechanics and Biomedical Engineering, Vol.10, Iss.2, 2007-04, pp. : 137-149
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Abstract
Objective: Develop a finite element (FE) model of a skull to perform biomechanical studies of maxillary expansion using bone anchors (BA). Materials and methods: A skull model was developed and assigned material properties based on Hounsfield unit (HU) values of cone-beam computerized tomography (CBCT) images. A 3 mm diameter cylindrical BA was modelled and inserted in the palatal bone. A 4 mm transverse displacement was applied on the anchor. An evaluation on the effect on local stresses of BA implantation inclination angle was performed. Results: Proper displacement results and strain-stress trends for the expansion process were present. Stress distribution patterns were similar as reported in the literature. No significant difference between BA inclination angles was found. Conclusion: This work leads to a better understanding and prediction of craniofacial and maxillary bone remodelling during ME with BA treatments and is a first step towards the development of patient specific treatments.
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