Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate

H. Murata, Kunio Ishikawa, S. Tenshin, S. Horiuchi, M. Nakanishi, K. Asaoka, T. Kawata, T. T. Yamamoto

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Diamine silver fluoride [AgF: (NH3)2AgF] is a unique fluoride solution used clinically in Japan for primary teeth. AgF has been shown to reduce dental caries and dentine hypersensitivity. However, AgF also stains teeth black due to sulfide precipitation and thus is unacceptable for permanent teeth. In the present study, the potential value of ammonium hexafluorosilicate [SiF: (NH4)2SiF6], which has a formula similar to that of AgF but contains no Ag, was studied with respect to its ability to fluoridate apatite. Hydroxyapatite [HAP: Ca10(PO4)6(OH)2] powder was treated with several topical fluoride solutions, i.e. neutral sodium fluoride, acidulated phosphate fluoride (APF) along with AgF and SiF. Following treatment, the HAP powders were analyzed for their fluorine content, crystal -linity changes, and solubility in acidic solution. The highest level of fluoridated HAP [FAP: Ca10(PO4)6(OH)xF2––x] was observed in HAP powder treated with SiF, even though more total fluorine in the form of FAP and CaF2 was observed in HAP powder samples treated with APF. Presumably as a consequence of this higher level of FAP formation after SiF treatment, the highest level of crystallinity along with the lowest solubility in acidic solution were observed in HAP powder treated with SiF solution. We concluded, therefore, that SiF may have potential value for use as a topical fluoride solution.

Original languageEnglish
Pages (from-to)465-470
Number of pages6
JournalCaries Research
Volume30
Issue number6
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

Fingerprint

Fluoridation
Durapatite
Powders
Acidulated Phosphate Fluoride
Topical Fluorides
Fluorine
Solubility
Tooth
Dentin Sensitivity
Apatites
Sodium Fluoride
Deciduous Tooth
Dental Caries
Sulfides
Fluorides
hexafluorosilicate
Japan
Coloring Agents

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Murata, H., Ishikawa, K., Tenshin, S., Horiuchi, S., Nakanishi, M., Asaoka, K., ... Yamamoto, T. T. (1996). Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate. Caries Research, 30(6), 465-470. https://doi.org/10.1159/000262361

Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate. / Murata, H.; Ishikawa, Kunio; Tenshin, S.; Horiuchi, S.; Nakanishi, M.; Asaoka, K.; Kawata, T.; Yamamoto, T. T.

In: Caries Research, Vol. 30, No. 6, 01.01.1996, p. 465-470.

Research output: Contribution to journalArticle

Murata, H, Ishikawa, K, Tenshin, S, Horiuchi, S, Nakanishi, M, Asaoka, K, Kawata, T & Yamamoto, TT 1996, 'Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate', Caries Research, vol. 30, no. 6, pp. 465-470. https://doi.org/10.1159/000262361
Murata H, Ishikawa K, Tenshin S, Horiuchi S, Nakanishi M, Asaoka K et al. Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate. Caries Research. 1996 Jan 1;30(6):465-470. https://doi.org/10.1159/000262361
Murata, H. ; Ishikawa, Kunio ; Tenshin, S. ; Horiuchi, S. ; Nakanishi, M. ; Asaoka, K. ; Kawata, T. ; Yamamoto, T. T. / Fluoridation of hydroxyapatite powder by ammonium hexafluorosilicate. In: Caries Research. 1996 ; Vol. 30, No. 6. pp. 465-470.
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