The degradation behavior of calcium-rich hydroxyapatite foams in vitro.

J Biomed Mater Res A

Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

Published: June 2021

AI Article Synopsis

  • Hydroxyapatite (HA) is a special material that helps in healing, but it doesn't break down quickly enough for some medical uses.
  • In this study, scientists looked at how modified HA foams, mixed with calcium nitrate to create calcium carbonate, break down over time.
  • The new foam released more calcium ions and was safe for human cells, making it a good option for helping grow bone cells in the lab or for use in bone treatments.

Article Abstract

Hydroxyapatite (HA) is a well-known regenerative biomaterial. However, the slow degradation rate of HA is still an obstacle in clinical applications. In this study, we concentrated on investigating the degradation behavior of the calcium-rich HA foams, which had a demonstrated effect on blood differentiation in previous studies. The HA foams were processed by an emulsion method and were infiltrated with calcium nitrate to create a calcium carbonate second phase, heterogeneously distributed on and under the surface of the foam. During the 28-day solubility test, the calcium carbonate phase contributed to enhanced Ca ion release into the saline compared to phase pure HA foams. Both types of foams were biocompatible as demonstrated by human endothelial cell culture on their surface. The release of calcium ions, the degradation behavior, and the endothelial cell differentiation behavior suggest this biphasic ceramic is a candidate for bone marrow in vitro culture and a possible bone substitute material.

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Source
http://dx.doi.org/10.1002/jbm.a.37077DOI Listing

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