Fabrication of carbonate apatite blocks from set gypsum based on dissolutionprecipitation reaction in phosphate-carbonate mixed solution

Shunsuke Nomura, Kanji Tsuru, Michito Maruta, Shigeki Matsuya, Ichiro Takahashi, Kunio Ishikawa

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Carbonate apatite (CO3Ap), fabricated by dissolution-precipitation reaction based on an appropriate precursor, is expected to be replaced by bone according to bone remodeling cycle. One of the precursor candidates is gypsum because it shows self-setting ability, which then enables it to be shaped and molded. The aim of this study, therefore, was to fabricate CO3Ap blocks from set gypsum. Set gypsum was immersed in a mixed solution of 0.4 mol/L disodium hydrogen phosphate (Na2HPO4) and 0.4 mol/L sodium hydrogen carbonate (NaHCO3) at 80-200°C for 6-48 h. Powder X-ray diffraction patterns and Fourier transform infrared spectra showed that CO3Ap block was fabricated by dissolution-precipitation reaction in Na2HPO4-NaHCO3 solution using set gypsum in 48 h when the temperature was 100°C or higher. Conversion rate to CO3Ap increased with treatment temperature. CO3Ap block containing a larger amount of carbonate was obtained when treated at lower temperature.

Original languageEnglish
Pages (from-to)166-172
Number of pages7
Journaldental materials journal
Volume33
Issue number2
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)

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