Transformation of apatite cement to B-Type carbonate apatite using different atmosphere

Arief Cahyanto, Kanji Tsuru, Kunio Ishikawa

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

13 Citations (Scopus)

Abstract

Apatite cement (AC) is a breakthrough in biomaterials for the reconstruction of the bone defect. However, the replacement of AC to bone up to the present time is still controversial for researchers. Several researchers have reported that AC was replaced by bone while others claimed replacement was limited. The aim of this study is to investigate the transformation mechanism of AC to B-Type carbonate apatite (CO3Ap) using different atmosphere. An in vitro study mimicking the body environment was employed in order to examine the effect of setting atmosphere on the composition of set AC. An equimolar of tetracalcium phosphate (TTCP; Ca4 (PO4)2O) and dicalcium phosphate anhydrous (DCPA; CaHPO4) mixed with distilled water was enabled to harden at 37°C and 100% of relative humidity under presence of 5% CO2, 100% CO2, and 100% N2 atmospheres. XRD and FT-IR analyses revealed that in the presence of 100% CO2 and 5% CO2, Btype CO3Ap could be determined and only small amounts of TTCP remained unreacted. On the contrary, in the presence of 100% N2, the CO3-2 bands could not be detected and larger amount of TTCP remained unreacted compared to 5% CO2 and 100% CO2 atmospheres. SEM morphology showed that the microstructure of AC was entangled and locked to each other. In addition, the small needle like crystals appeared in the surface of 100% N2, similar to hydroxyapatite. We concluded that the CO3 -2 ions incorporated in AC during setting reaction may be one of the essential factors for CO3Ap formation.

Original languageEnglish
Title of host publicationBioceramics 27
EditorsIka Dewi Ana, Kuwat Triyana
PublisherTrans Tech Publications Ltd
Pages9-13
Number of pages5
ISBN (Print)9783035710403
DOIs
Publication statusPublished - Jan 1 2016
Event27th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, 2015 - Bali, Indonesia
Duration: Oct 27 2015Oct 29 2015

Publication series

NameKey Engineering Materials
Volume696
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other27th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, 2015
CountryIndonesia
CityBali
Period10/27/1510/29/15

All Science Journal Classification (ASJC) codes

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

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