The effectiveness of element downsizing on a three‐dimensional finite element model of bone trabeculae in implant biomechanics

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Abstract
More validity of finite element analysis in implant biomechanics requires element downsizing. However, excess downsizing needs computer memory and calculation time. To investigate the effectiveness of element downsizing on the construction of a three-dimensional finite element bone trabeculae model, with different element sizes (600, 300, 150 and 75 μm) models were constructed and stress induced by vertical 10 N loading was analysed. The difference in von Mises stress values between the models with 600 and 300 μm element sizes was larger than that between 300 and 150 μm. On the other hand, no clear difference of stress values was detected among the models with 300, 150 and 75 μm element sizes. Downsizing of elements from 600 to 300 μm is suggested to be effective in the construction of a three-dimensional finite element bone trabeculae model for possible saving of computer memory and calculation time in the laboratory.