TY - JOUR T1 - Maxillary expansion treatment using bone anchors: development and validation of a 3D finite element model. AU - Fang,Y, AU - Lagravère,M O, AU - Carey,J P R, AU - Major,P W, AU - Toogood,R R, PY - 2008/7/25/pubmed PY - 2008/8/23/medline PY - 2008/7/25/entrez SP - 137 EP - 49 JF - Computer methods in biomechanics and biomedical engineering JO - Comput Methods Biomech Biomed Engin VL - 10 IS - 2 N2 - 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. SN - 1025-5842 UR - https://www.unboundmedicine.com/medline/citation/18651280/Maxillary_expansion_treatment_using_bone_anchors:_development_and_validation_of_a_3D_finite_element_model_ DB - PRIME DP - Unbound Medicine ER -