Keywords
HAp
bone injert
scaffolding simulation
biomechanics
human bone
resistence
compression
elastic modulus
cubic model geometría ósea
HAp
injerto óseo
simulación de andamios
biomecánica
hueso humano
resistencia
compresión
módulo elástico
modelo cúbico
How to Cite
Abstract
The relationship between the strength of the material and the geometry of bone scaffolds ensures that the scaffold pores remain intact while bone cells develop through them. In this study, mechanical simulations of two geometries of bone scaffolds are presented using the mechanical properties of Hydroxyapatite (HAp) mixed with lactic acid. First, compression tests were performed on the HAp to determine its mechanical properties. Then, two geometries of bone scaffolds were modeled based on the porosity and size suitable for cell regeneration as reported in the literature, and the mechanical properties values were used for FEM simulations. The elastic modulus of 253.4 MPa, yield stress of 7.53 MPa, and Poisson's ratio of 0.33 were found. The porosities calculated for the cubic and cylindrical CAD models are 43.83% and 50.51%, respectively. It was found that the cubic model supported a force of 21 N in versus the cylindrical model, which supported a force of 19 N; these forces were applied in the simulations not to exceed the maximum permissible stress of 4.5 MPa of the HAp.
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