Fluoride Release/Uptake of Glass-ionomer Cements and Polyacid-modified Composite Resins

概要

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The aim of this study was to investigate the fluoride release and fluoride recharge behaviors of two conventional glassionomer cements (GICs) and two polyacid-modified composite resins (PMCRs) after exposure to mouthwash and toothpaste. Fluoride released from the materials was measured at 1^<st>, 2^<nd>, 3^<rd>, 4^<th>, 7^<th>, 14^<th>, 21^<st>, and 28^<th> days. At 28^<th> day, the specimens were divided into three groups. Specimens in the control group were stored in deionized water. For the other two groups, the specimens were exposed to 0.05% NaF solution and fluoridated toothpaste for one month. After refluoridation, fluoride amount was measured at 30^<th>, 31^<st>, 32^<nd>, 36^<th>, 44^<th>, 52^<nd>, and 60^<th> days. All materials released fluoride. The highest amount of fluoride was obtained during the first 24 hours, and there was a statistically significant difference between the amounts of fluoride released from GICs and PMCRs (p<0.0001). After exposure to mouthwash and fluoridated toothpaste, all materials were recharged and continued releasing fluoride. While the amount of fluoride release from the materials increased after reflouridation, the increase was higher in GICs.
日本歯科理工学会の論文