Structure and biomineralization of calcium silicate glasses containing fluoride ions

Eiji Fuji, Koji Kawabata, Hideyuki Yoshimatsu, Satoshi Hayakawa, Kanji Tsuru, Akiyoshi Osaka

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The in vitro bioactivity, in terms of apatite-forming ability, of calcium silicate glasses containing 10 mol% fluoride ions in the NaF-CaO-SiO2 system was examined by soaking in Kokubo's simulated body fluid (SBF) at 36.5°C for 7 d. The surface structure of the glasses was examined by thin-film X-ray diffraction (TF-XRD) and Fourier transform infrared reflection spectroscopy (FT-IR) in order to confirm the apatite deposition. The structure of the calcium silicate glasses was examined by 29Si magic angle spinning-nuclear resonance spectroscopy (MAS-NMR) and X-ray photoelectron spectroscopy (XPS). Three calcium silicate glasses containing 10 mol% fluoride ions had different apatite-forming abilities. In the case of CaO/SiO2=1, the apatite-forming ability of 10NaF·45CaO·45SiO2 was lower than that of 50CaO·50SiO2. This indicated that the addition of fluoride ions suppressed the apatite-forming ability, irrespective of the structural similarity of the silicate network based on the ratio of CaO/SiO2 between the glasses.

Original languageEnglish
Pages (from-to)762-766
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume111
Issue number1298
DOIs
Publication statusPublished - Oct 2003

Keywords

  • Apatite
  • Bioactivity
  • Calcium silicate glass
  • Fluoride ions
  • Nuclear magnetic resonance

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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