Oral Health Prev Dent. 2020 Dec 14;18(4):1047-1053. doi: 10.3290/j.ohpd.b871065.
Three commercial restorative glass-ionomer cements (GICs) were modified with 5% and 10 wt/wt% nanodiamond (ND) particles incorporated into the powder of the GICs. The aim of the study was to assess the percentage of surface fluoride increase on different materials, following 2% neutral sodium fluoride gel application (2% NSF). Materials and Methods: The commercial GICs were: FN, Fuji IX GP (GC); KU, Ketac Universal (3M Oral Care); and RSC: Riva Self Cure (SDI). Grade 1 (Plasmachem) nanodiamond was used. Six specimens of each material were prepared using precise powder:liquid ratios. After a 10-min setting time, the GICs were polished. The specimens were randomly divided into two groups: control (group A) and test (group B). The samples were blot dried and group B received the 2% NSF gel for 2 min. The excess was wiped off with gauze and both groups were analyzed with SEM-EDS. Results: Data analysis revealed that all the GICs and their respective ND modifications had a statistically significant surface fluoride percentage increase (p < 0.0001) on the GICs in group B. The addition of ND10% w/w to FN (p < 0.001) and RSC (p = 0.029) resulted in statistically significant increase of surface fluoride percentage. KU remained consistent with no statistically significant increase noted between ND-modified KU and KU in group A or B. Conclusion: The ability of GICs to absorb the 2% NSF gel immediately after finishing of the restoration statistically significantly increases the fluoride percentage of the surface layer.
三种市售的修复性玻璃离子水门汀（GIC）用 5%和 10wt/wt%纳米金刚石（ND）颗粒进行改性，将 ND 颗粒加入到 GIC 的粉末中。本研究的目的是评估不同材料在应用 2%中性氟化钠凝胶（2% NSF）后表面氟化物增加的百分比。
商业 GIC 分别为：FN，富士 IX GP（GC）；KU，Ketac Universal（3M 口腔护理）；和 RSC：Riva Self Cure（SDI）。使用一级（Plasmachem）纳米金刚石。使用精确的粉末：液体比例制备每种材料的 6 个样本。设置时间为 10 分钟后，对 GIC 进行抛光。将样本随机分为两组：对照组（A 组）和实验组（B 组）。样本用纱布吸干，B 组接受 2% NSF 凝胶 2 分钟。用纱布擦拭掉多余的凝胶，然后用 SEM-EDS 对两组进行分析。
数据分析显示，所有 GIC 及其各自的 ND 改性均使 B 组 GIC 的表面氟化物百分比有统计学意义的增加（p<0.0001）。在 FN（p<0.001）和 RSC（p=0.029）中添加 ND10%w/w 导致表面氟化物百分比有统计学意义的增加。KU 保持一致，在 A 组或 B 组中，ND 改性 KU 和 KU 之间没有观察到表面氟化物百分比有统计学意义的增加。
GIC 在完成修复后立即吸收 2% NSF 凝胶的能力，使表面层的氟化物百分比有统计学意义的增加。
