Effect of wollastonite ceramics and bioactive glass on the formation of a bonelike apatite layer on a cobalt base alloy

Journal of Biomedical Materials Research. Part a
D A CortésM A López

Abstract

A biomimetic method was used to promote a bioactive surface on a cobalt base alloy (ASTM F-75). The metallic substrates were alkali treated and some of the samples were subsequently heat treated. The treated samples were immersed in simulated body fluid (SBF) on granular particles of either bioactive glass or wollastonite. For comparative purposes, no bioactive system was used in some tests. Three different methods were used for the immersion of the samples in SBF: 1) 21 days in SBF, 2) 21 days in 1.5 SBF, and 3) 7 days in SBF followed by 14 days in 1.5 SBF (re-immersion method). A bonelike apatite layer was formed on all the samples placed on wollastonite and bioactive glass particles. The morphology of the apatite layer formed by using the re-immersion method and wollastonite closely resembled the existing bioactive systems. No apatite layer was observed on the samples treated without bioactive material and soaked for 21 days in SBF or 1.5 SBF, apart from the substrates treated by using the re-immersion method. The heat treatment delayed the apatite formation in all the cases studied.

References

Sep 14, 2000·Journal of Biomedical Materials Research·D ShiX Wen
Aug 16, 2001·Journal of Biomedical Materials Research·L SunA Kucuk
Jan 5, 2002·Journal of Biomedical Materials Research·C DuP Layrolle
May 15, 2002·Journal of Biomedical Materials Research·P SepulvedaL L Hench

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Citations

Dec 18, 2012·Journal of Materials Science. Materials in Medicine·Charlie R CampionKarin A Hing
Dec 15, 2015·Materials Science & Engineering. C, Materials for Biological Applications·M AndreiI Demetrescu
Oct 27, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Leonardo M B FerreiraClóvis Augusto Ribeiro

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