绿蜂胶对玻璃离子水门汀物理力学性能的影响。
Effect of green propolis addition to physical mechanical properties of glass ionomer cements.
机构信息
University of North Paraná, Londrina, PR, Brazil.
出版信息
J Appl Oral Sci. 2011 Apr;19(2):100-5. doi: 10.1590/s1678-77572011000200004.
OBJECTIVE
This study investigated the mechanical properties of glass ionomer cements (GICs) combined with propolis as a natural antimicrobial substance.
MATERIAL AND METHODS
Typified green propolis, as an ethanolic extract (EEP) or in the lyophilized form (powder), was incorporated to specimens of Ketac Fil Plus, ChemFlex and Ketac Molar Easymix GICs. For each test, 8 specimens of each material were prepared. For water sorption and solubility tests, specimens were subjected to dehydration, hydration and redehydration cycles until a constant mass was obtained for each step. Measurements were recorded using a digital balance of 10-4 g precision. For the diametral tensile strength test, specimens were tested in a universal test machine at 0.5 mm/min crosshead speed after 24 h storage in deionized water. Data were evaluated by one-way ANOVA and Tukey's tests (p<0.05).
RESULTS
The addition of propolis to GIC clearly increased water sorption compared to pure material. Solubility was material-dependent and was not clearly evident. For the diametral tensile strength test, association with propolis altered negatively only Chemflex.
CONCLUSION
It may be concluded that incorporation of propolis to GICs alters some properties in a material-dependent condition.
目的
本研究旨在探讨玻璃离子水门汀（GIC）与作为天然抗菌物质的蜂胶结合后的力学性能。
材料与方法
典型的绿蜂胶以乙醇提取物（EEP）或冻干形式（粉末）加入到 Ketac Fil Plus、ChemFlex 和 Ketac Molar Easymix GIC 的试件中。每种材料各制备 8 个试件。对于水吸附和溶解度测试，试件经过脱水、水化和再水化循环，直到每个步骤获得恒定质量。使用精度为 10-4 g 的数字天平记录测量值。对于直径拉伸强度测试，将试件在万能试验机中以 0.5 mm/min 的十字头速度测试，在去离子水中储存 24 小时后进行。数据通过单向方差分析和 Tukey 检验（p<0.05）进行评估。
结果
与纯材料相比，蜂胶的加入明显增加了 GIC 的水吸附。溶解度取决于材料，且不明显。对于直径拉伸强度测试，仅 ChemFlex 与蜂胶联合使用时会产生负面影响。
结论
可以得出结论，蜂胶的加入会改变 GIC 材料的某些性能，具体取决于材料。
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