Effects of immersion in solution of an experimental toothpaste containing S-PRG filler on like-remineralizing ability of etched enamel

Masahiro Iijima, Shuichi Ito, Susumu Nakagaki, Naohisa Kohda, Takeshi Muguruma, Takashi Saito, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This study investigated the like-remineralizing ability of experimental toothpaste containing surface reaction-type pre-reacted glassionomer (S-PRG) filler on etched enamel. Human enamel blocks were etched with 35% phosphoric acid and immersed in 5-mL distilled water, fourfold diluted solution of NaF-containing toothpaste, or S-PRG filler-containing experimental toothpaste. Nanoindentation testing was carried out during immersion and the enamel surfaces were observed by scanning electron microscopy. Elemental analysis of the ions in each solution was performed using inductively coupled plasma atomic emission spectroscopy and fluoride electrode. After 1 month of immersion, the hardness and elastic modulus of the specimen immersed in S-PRG filler-containing toothpaste showed significantly greater values than those of the specimen immersed in NaF-containing toothpaste. Considerable amounts of Al, B, Na, Si, Sr, F ions were detected in the solution of S-PRG filler-containing toothpaste. Experimental S-PRG filler-containing toothpaste may enhance the like-remineralizing ability of etched enamel surfaces due to its ion-releasing ability.

Original languageEnglish
Pages (from-to)430-436
Number of pages7
JournalDental materials journal
Volume33
Issue number3
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Enamel
  • Ion-releasing
  • Nanoindentation
  • Remineralization
  • S-PRG

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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