| รหัสดีโอไอ | 10.14457/TU.the.2022.1474 |
|---|---|
| Title | Effect of protective surface coating on hardness, fluoride releasing and recharging ability of recent uncoated high viscosity glass ionomer cement |
| Creator | Chayanee Dulsamphan |
| Contributor | Nantawan Krajangta, Advisor |
| Publisher | Thammasat University |
| Publication Year | 2022 |
| Keyword | Fluoride release, Fluoride recharge, Protective surface coating, High viscosity glass ionomer cement, Vickers hardness |
| Abstract | This study aimed to compare the Vickers hardness and amount of released and recharged fluoride ion of glass ionomer cements between various surface coating procedures at different time-points. The 270 cylindrical samples (6x2 mm) were preparedand randomly divided into three types of GICs: KetacTM Universal AplicapTM, KetacTM MolarAplicapTM and KetacTM Fil Plus AplicapTM. Each GIC was equally divided into three coating procedures (n=15/group): uncoated, coated with KetacTM Glaze and coated with G-Coat Plus. The average of the Vickers hardness was measured at 24 hours, 7 days and 30 days after incubation of specimens at 37°C in deionized water. The measurement of fluoride release and recharge were measured at 24 hours, 1, 2, 3 and 4 weeks using 1.23%APF gelas a recharging agent. A two-way ANOVA followed by post-hoc Tamhane multiple comparison test and a one-way repeated measures ANOVA were performed (p=0.05). The Vickers hardness was statistically significantly increased in both KetacTM Glaze coated and G-Coat Plus coated groups compared to uncoated group at all time-points (p<0.001). GCoat Plus coating significantly increased hardness more than KetacTM Glaze coating in KetacTM Universal AplicapTM at 30 days (p<0.001). Conversely, the coating significantlydecreased fluoride release and recharge (p<0.001), particularly in G-Coat Plus coating. In conclusion, the application of coating agents especially nanofilled resin coating improves the surface hardness, however, decreased fluoride releasing and recharging capacity of KetacTM Universal AplicapTM. |
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