The effects of single application of pastes containing ion-releasing particles on enamel demineralization

Masahiro Iijima, Kyotaro Kawaguchi, Naohiko Kawamura, Shuichi Ito, Takashi Saito, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We investigated single application of pastes containing a surface reaction-type pre-reacted glass-ionomer (S-PRG) filler on enamel demineralization. Human enamel blocks were polished using pastes containing S-PRG filler (0, 5, and 30%) and immersed in demineralizing solution for 5 days with daily change of solutions. The pH measurement and nanoindentation testing was carried out during the immersion period, and the enamel surfaces were examined using scanning electron microscopy and atomic force microscopy. A non-fluoride paste and a hydroxyapatite-containing paste were used for comparison. The specimens polished with the S-PRG filler-containing paste exhibited acid-neutralizing properties, which became stronger with an increasing S-PRG filler content. Following immersion in the demineralizing solution, specimens polished with the S-PRG filler-containing paste exhibited significantly greater hardness and elastic modulus values than those polished with the other pastes and exhibited a smoother surface than did the other specimens. Pastes containing S-PRG filler inhibits the demineralization of enamel.

Original languageEnglish
Pages (from-to)461-468
Number of pages8
JournalDental materials journal
Volume36
Issue number4
DOIs
Publication statusPublished - 2017

Keywords

  • Enamel demineralization buffering
  • Nanoindentation
  • Professional cleaning tooth polishing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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