About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Next Generation Biomaterials
|
Presentation Title |
Impact of Wall Thickness and Pores Size Variation on Hydroxyapatite Based Triply Periodic Minimal Surfaces |
Author(s) |
Islam Bouakaz, David Grossin, Gregory Nolens |
On-Site Speaker (Planned) |
Islam Bouakaz |
Abstract Scope |
Triply Periodic Minimal Surfaces(TPMS) are three dimensional mathematical structures that presents a continuous tortuosity which can help cell proliferation in bone substitutes. the mechanical properties of lattice structures are impacted by the properties of the material, relative density and structure of the lattice. In order to compare different structure types and to understand the effect of pores size and wall thickness change on the mechanical and biological properties, 3 different Hydroxyapatite based TPMS were printed using a Digital Light Processing 3D printer (VAT Photopolymerization). Pore sizes and wall thicknesses were varied for each TPMS. as the printed parts were thermally debinded and sintered, the compression tests were conducted according to the ISO 13175 standard for calcium phosphate porous bone substitutes. bending strength and Young's modulus were determined using a 3-point bending test. cell proliferation in the selected structure was tested using a dynamic in vitro tests. |