Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH

Abstract This study investigated the interaction of borate ions released from surface pre-reacted glass ionomer (S-PRG) fillers with the biological apatites of enamel and dentin using solid-state (SS) magic-angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopy analysis. We further evaluat...

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Autores principales:	Noriko Hiraishi, Mahmoud Sayed, Robert Hill, Junji Tagami, Fumiaki Hayashi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fa466218c2c54cd184be6b097ee7a798
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spelling	oai:doaj.org-article:fa466218c2c54cd184be6b097ee7a7982021-12-02T17:06:25ZInteractions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH10.1038/s41598-021-95279-x2045-2322https://doaj.org/article/fa466218c2c54cd184be6b097ee7a7982021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95279-xhttps://doaj.org/toc/2045-2322Abstract This study investigated the interaction of borate ions released from surface pre-reacted glass ionomer (S-PRG) fillers with the biological apatites of enamel and dentin using solid-state (SS) magic-angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopy analysis. We further evaluated the effect of borate ions on the pH change. Bovine enamel and dentin powder were submerged in S-PRG eluate (with borate ion concentration of 100 mM) for 3 h, then washed with deionized water (DW). The dried enamel and dentin specimens were used for 11B SS-NMR and Fourier transform infrared spectroscopy (FT-IR) analysis. Enamel and dentin blocks were treated with three solutions: DW (control), S-PRG eluent and borate solution (100 mM). The treated samples were submerged in the demineralization solution and the pH was measured using a pH meter daily for 6 days. The surfaces of the enamel and dentin blocks were then observed using field emission scanning electron microscopy (FE-SEM). SS-NMR analysis revealed the presence of adsorbed borate ions in the enamel and dentin samples in a tetra-coordinated form. The pH results demonstrated an increase in pH values in the S-PRG and borate groups. SEM images showed that the surfaces of the control group were demineralized, whereas the surfaces of the S-PRG and borate groups were intact. These results concluded that borate ions could be adsorbed to enamel and dentin in the tetra-coordinated form. Borate ions possess a buffer capacity which may help to protect the tooth structure against acid attacks and promote remineralization.Noriko HiraishiMahmoud SayedRobert HillJunji TagamiFumiaki HayashiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Noriko Hiraishi Mahmoud Sayed Robert Hill Junji Tagami Fumiaki Hayashi Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
description	Abstract This study investigated the interaction of borate ions released from surface pre-reacted glass ionomer (S-PRG) fillers with the biological apatites of enamel and dentin using solid-state (SS) magic-angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopy analysis. We further evaluated the effect of borate ions on the pH change. Bovine enamel and dentin powder were submerged in S-PRG eluate (with borate ion concentration of 100 mM) for 3 h, then washed with deionized water (DW). The dried enamel and dentin specimens were used for 11B SS-NMR and Fourier transform infrared spectroscopy (FT-IR) analysis. Enamel and dentin blocks were treated with three solutions: DW (control), S-PRG eluent and borate solution (100 mM). The treated samples were submerged in the demineralization solution and the pH was measured using a pH meter daily for 6 days. The surfaces of the enamel and dentin blocks were then observed using field emission scanning electron microscopy (FE-SEM). SS-NMR analysis revealed the presence of adsorbed borate ions in the enamel and dentin samples in a tetra-coordinated form. The pH results demonstrated an increase in pH values in the S-PRG and borate groups. SEM images showed that the surfaces of the control group were demineralized, whereas the surfaces of the S-PRG and borate groups were intact. These results concluded that borate ions could be adsorbed to enamel and dentin in the tetra-coordinated form. Borate ions possess a buffer capacity which may help to protect the tooth structure against acid attacks and promote remineralization.
format	article
author	Noriko Hiraishi Mahmoud Sayed Robert Hill Junji Tagami Fumiaki Hayashi
author_facet	Noriko Hiraishi Mahmoud Sayed Robert Hill Junji Tagami Fumiaki Hayashi
author_sort	Noriko Hiraishi
title	Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
title_short	Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
title_full	Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
title_fullStr	Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
title_full_unstemmed	Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH
title_sort	interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on ph
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fa466218c2c54cd184be6b097ee7a798
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Interactions of boron released from surface pre-reacted glass ionomer with enamel/dentin and its effect on pH

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