Load-Bearing Behavior of a Simulated Craniofacial Structure Fabricated From a Hydroxyapatite Cement and Bioresorbable Fiber-Mesh
A S. Von Gonten, James F. Kelly, Joseph M. Antonucci
lcium phosphate cements (CPC) have proven successful in the repair of small, non-stress bearing skeletal defects. These cements do not have sufficient tensile strength or fracture toughness to allow their use in stress-bearing applications. It was hypothesized that a bioresorbable fiber mesh would improve the load-bearing behavior of shell structures fabricated of CPC. This study used a biaxial flexure fixture to compare the work-to-fracture values of discs made of: (1) CPC; (2) CPC reinforced with a bioresorbable two-dimensionally oriented poly (glactin) fiber-mesh; and (3) poly (methyl methacrylate) PMMA) that were immersed in a serum-like solution for 0-23 days. CPC-mesh and PMMA discs wereindistinguishable at 0, 1 and 7 days, based on work-to-fracture data. CPC and CPC-mesh discs wewe indistinguishable at day 28, because of fiber hydrolysis. The knitted fiber-mesh was effective in improving load-bearing behavior of a calcium phosphate cement for potential structural repair of bone defects.
Von Gonten, A.
, Kelly, J.
and Antonucci, J.
Load-Bearing Behavior of a Simulated Craniofacial Structure Fabricated From a Hydroxyapatite Cement and Bioresorbable Fiber-Mesh, Journal of Materials Science
(Accessed December 7, 2023)