Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
Original Papers
Detection of ions released from S-PRG fillers and their modulation effect
Yoshihiro FUJIMOTOMika IWASARyosuke MURAYAMAMasashi MIYAZAKIAkihiro NAGAFUJIToshiyuki NAKATSUKA
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Keywords: Giomer, Ion release, pH
JOURNALS FREE ACCESS

2010 Volume 29 Issue 4 Pages 392-397

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Abstract

The purpose of this study was to analyze the ions released from a surface pre-reacted glass ionomer (S-PRG) filler in distilled water or lactic acid solution. S-PRG filler was mixed with either solution at 1000:1, 100:1, 10:1, and 1:1 ratios by weight. By means of inductively coupled plasma atomic emission spectroscopy and a fluoride electrode, elements released from S-PRG filler were identified to be Al, B, Na, Si, Sr, and F. To investigate the effect of solution pH on ion release, the pH values of the solutions before mixing and after 24 hours’ mixing with S-PRG were measured. After 24 hours’ mixing, the pH values of solutions at all ratios became more neutral or weakly alkaline regardless of their initial pH levels before mixing. In conclusion, results showed that S-PRG filler released several types of ions, and that ion release was influenced by the mixing ratio of the solution rather than the initial pH of the solution.

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© 2010 The Japanese Society for Dental Materials and Devices
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