Load-bearing behavior of a simulated craniofacial structure fabricated from a hydroxyapatite cement and bioresorbable fiber-mesh

  • A. S. Von Gonten
  • J. R. Kelly
  • J. M. Antonucci
Article

DOI: 10.1023/A:1008992900829

Cite this article as:
Von Gonten, A.S., Kelly, J.R. & Antonucci, J.M. Journal of Materials Science: Materials in Medicine (2000) 11: 95. doi:10.1023/A:1008992900829

Abstract

Calcium 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 0–28 days. CPC-mesh and PMMA discs were indistinguishable at 0, 1 and 7 days, based on work-to-fracture data. CPC and CPC-mesh discs were 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.

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • A. S. Von Gonten
    • 1
  • J. R. Kelly
    • 2
  • J. M. Antonucci
    • 3
  1. 1.Department of ProsthodonticsNaval Dental SchoolBethesdaUSA
  2. 2.Dental and Medical Materials GroupNational Institute of Standards and TechnologyGaithersburgUSA
  3. 3.Dental and Medical Materials GroupNational Institute of Standards and TechnologyGaithersburgUSA