Validation of Bi-Material FEM Alveolar Bone Model
The purpose of this study was to verify the stresses induced by dental restoration on bi-material FEM alveolar bone model. Implanting induced stresses over the alveolar bone are studied during the past decades. With the improving computing technology, computer simulations with FEM( Finite Element Method) software are employed on investigating the stresses after the cure. An important issue about FEM calculations is the discretelized model. Single material bone model were adopt in the early stage studies. Due to the nature of human bone structure, the assumption of homogenous material over the bone is not an adequate one nowadays. Bi-material bone structure has become the mainstream of the numerical studies these years. The bones are modeled with a cancellous core surrounded by a dense cortical layer. Forces, stresses, deformations and strains are calculated by performing FEA on those digital bone models. However, the reliability of bi-material bones digital models is not verified. We built a bi-material prototype and an identical digital implanted bone model. Same boundary conditions and loads are applied on both models. The induced strains measured by strain gage agree with the computer calculated results well.
C. T. Liao et al., "Validation of Bi-Material FEM Alveolar Bone Model", Advanced Materials Research, Vol. 739, pp. 388-393, 2013