Fabrication of three different types of porous carbonate-substituted apatite ceramics for artificial bone

Toshimitsu Tanaka, Tomohiko Yoshioka, Toshiyuki Ikoma, Tomoya Kuwayama, Tatsuhiko Higaki, Junzo Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The purposes of this study were to fabricate porous carbonate-substituted apatite (CAp) ceramics and characterize important properties such as compressive strengths and dissolution rates for an artificial bone. Porous A-type CAp (A-CAp) with uniaxial pores was fabricated by sintering porous hydroxyapatite green bodies at 1000°C in carbon dioxide gas atmosphere. B-type CAp (B-CAp) nanocrystals prepared by a wet method were mixed with an organic binder, freeze-dried and heated at 800°C in air, and AB-type CAp (AB-CAp) was fabricated by heating B-CAp porous bodies including the organic binder at 1100°C in carbon dioxide gas atmosphere. From the morphological observations with a scanning electron microscope, the porous A-CAp had uniaxially oriented pores of 104±33 μm in diameter, while the porous B-CAp and AB-CAp had large pores of 143±48 μm and 181±46 μm in diameter, of which pores were interconnected with small pores of 31±11 μm and 45±17 μm in diameter. The dissolution rates of CAps were apparently larger than that of HAp; the calcium concentrations increased in the order of AB-CAp > B-CAp > A-CAp > HAp. This is mainly attributed to carbonate content although it could be partialy depended on the different porous structures and diameters.

Original languageEnglish
Title of host publicationBioceramics 24
PublisherTrans Tech Publications Ltd
Pages143-146
Number of pages4
Edition1
ISBN (Print)9783037855171
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012 - Fukuoka, Japan
Duration: Oct 21 2012Oct 24 2012

Publication series

NameKey Engineering Materials
Number1
Volume529-530
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012
CountryJapan
CityFukuoka
Period10/21/1210/24/12

Keywords

  • Carbonate-substituted apatite
  • Dissolution test
  • Porous structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Fabrication of three different types of porous carbonate-substituted apatite ceramics for artificial bone'. Together they form a unique fingerprint.

Cite this