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Article

Protective Effects of GIC and S-PRG Filler Restoratives on Demineralization of Bovine Enamel in Lactic Acid Solution

1
Section of Fixed Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka 814-0193, Japan
2
Oral Medicine Research Center, Fukuoka Dental College, Fukuoka 814-0193, Japan
3
Division of Biomaterials and Bioengineering, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(9), 2140; https://doi.org/10.3390/ma13092140
Received: 5 April 2020 / Revised: 27 April 2020 / Accepted: 30 April 2020 / Published: 6 May 2020
(This article belongs to the Collection Dental Biomaterials)
This study was aimed at investigating the protective effects of glass ionomer cement (GIC) and surface pre-reacted glass ionomer (S-PRG) fillers used as dental restorative materials on demineralization of bovine enamel. GlasIonomer FX ULTRA (FXU), Fuji IX GP Extra (FIXE), CAREDYNE RESTORE (CDR) were used as GICs. PRG Barrier Coat (BC) was used as the S-PRG filler. They were incubated in a lactic acid solution (pH = 4.0) for six days at a temperature of 37 °C. The mineral was etched from the enamel surface, and a large number of Ca and P ions were detected in solution. The Al, F, Na, Sr, and Sr ions were released in GICs and S-RPG fillers. The Zn ion was released only in CDR and the B ion was released only in BC. The presence of apparent enamel prism peripheries was observed after six days of treatment for the group containing only enamel blocks. pH values for the FXU, FIXE, CDR, BC, and enamel block groups after six days were 6.5, 6.6, 6.7, 5.9, and 5.1, respectively. Therefore, the observed pH neutralization effect suppressed progression of caries due to the release of several ions from the restoratives. View Full-Text
Keywords: pH neutralization; ion release; enamel demineralization; glass ionomer cement; surface pre-reacted glass ionomer filler pH neutralization; ion release; enamel demineralization; glass ionomer cement; surface pre-reacted glass ionomer filler
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MDPI and ACS Style

Kaga, N.; Nagano-Takebe, F.; Nezu, T.; Matsuura, T.; Endo, K.; Kaga, M. Protective Effects of GIC and S-PRG Filler Restoratives on Demineralization of Bovine Enamel in Lactic Acid Solution. Materials 2020, 13, 2140. https://doi.org/10.3390/ma13092140

AMA Style

Kaga N, Nagano-Takebe F, Nezu T, Matsuura T, Endo K, Kaga M. Protective Effects of GIC and S-PRG Filler Restoratives on Demineralization of Bovine Enamel in Lactic Acid Solution. Materials. 2020; 13(9):2140. https://doi.org/10.3390/ma13092140

Chicago/Turabian Style

Kaga, Naoyuki, Futami Nagano-Takebe, Takashi Nezu, Takashi Matsuura, Kazuhiko Endo, and Masayuki Kaga. 2020. "Protective Effects of GIC and S-PRG Filler Restoratives on Demineralization of Bovine Enamel in Lactic Acid Solution" Materials 13, no. 9: 2140. https://doi.org/10.3390/ma13092140

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