T. Munhoz, Ursula Tavares Nunes, Luciane Monte Alto Seabra, R. Monte-Alto
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引用次数: 4
摘要
目的:比较玻璃离子水泥(GIC)、复合材料(CO)、化学材料(CR)和光固化树脂(LR)裂缝密封胶的力学性能、氟释放度、颜色稳定性和铺展特性。材料和方法:制备圆柱体，通过直径拉伸强度测试(在37°C蒸馏水中保存24小时)和氟释放(24小时、3天、7天和15天)来测定机械性能;去离子水)。制备盘状标本，测定颜色稳定性(在色素溶液中放置1周;37°C;CIE L * a * b *;ΔE)。提出了一种简化的扩散试验方法来预测被试材料的粘度特性。资料分析采用单因素方差分析加t检验(p<0.05)。结果:结果显示材料之间在所有测试性能方面存在差异。CO的耐药性显著高于其他材料(p<0.05)， CR与LR间无显著差异。GICs的氟释放量显著高于其他材料(p<0.05)。CO本文章由计算机程序翻译，如有差异，请以英文原文为准。
Characterization of Mechanical Properties, Fluoride Release and Colour Stability of Dental Sealants
Objective: To compare the mechanical properties, fluoride release, colour stability and spreading characteristics of glass ionomer cement (GIC), compomer (CO), chemical (CR) and light-cured resin based (LR) fissure sealants. Material and Methods: Cylinders were prepared to determine mechanical properties by diametral tensile strength tests (stored for 24h in distilled water at 37°C) and fluoride release (24 hours, 3, 7 and 15 days; deionised water). Disk shaped specimens were prepared to determine colour stability (1 week in pigmenting solution; 37°C; CIE L*a*b*; ΔE). A simplified method of a spreading test was proposed to predict viscosity characteristics of the tested materials. Data were analysed using one-way ANOVA followed by T-test (p<0.05). Results: Results showed differences between materials regarding all tested properties. CO was statistically more resistant than the other materials (p<0.05), but no difference was observed between CR and LR. The fluoride release of GICs was significantly higher than the other materials (p<0.05). CO showed lower ΔE than the other materials in the following order: CO
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