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首页> 外文期刊>The Journal of Prosthetic Dentistry >In vitro comparison of fluoride release of six direct core materials.
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In vitro comparison of fluoride release of six direct core materials.

机译：六种直接核心材料的氟化物释放的体外比较。

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STATEMENT OF PROBLEM: Fluoride has been shown to deter caries and has been incorporated into core build-up materials. However, there is considerable variation in the formulation and release of fluoride from core build-up materials. PURPOSE: This in vitro study compared the fluoride released by 6 commercially available fluoride-releasing core materials over time. METHODS AND MATERIAL: Ten specimen disks (9 for Corestore) of each of the 6 core materials were fabricated, finished, measured, and immersed in deionized water in individual polystyrene jars. The jars were stored in a humidor at 37 degrees C between test periods. At the same time each day for 7 consecutive days, then at days 14, 22, 28, 59, and 89, the fluoride release was measured from each specimen disk in parts per million by testing the storage medium. The data were analyzed using 1-way ANOVA and Tukey-Kramer multiple comparison tests (P <.05). RESULTS: Five of the 6 core build-up materials tested showed an initial high concentration of fluoride release during the first day and gradually tapered over the study period. Fuji II LC consistently released more fluoride than any other material throughout the 89-day testing period. CONCLUSION: Fuji II LC released the most fluoride and was significantly different from the other materials tested. The maximum amount of fluoride was released by 5 of the 6 materials during the first 24 hours and gradually tapered over the 89-day testing period.
机译：问题陈述：氟化物已显示出抑制龋齿的作用，并已被掺入核心堆积材料中。但是，氟化物的配方和从堆芯材料中释放的氟化物存在很大差异。目的：这项体外研究比较了6种市售氟化物释放核心材料随时间释放的氟化物。方法和材料：分别制作，精加工，测量并浸入去离子水中的六种聚苯乙烯瓶中的10种样品盘（对于9种芯材料，分别为9个）。在测试期间之间，将广口瓶存储在37摄氏度的雪茄箱中。在连续7天每天的同一时间，然后在第14、22、28、59和89天，通过测试存储介质，测量了每个样品盘中氟化物的释放量（百万分之几）。使用1向ANOVA和Tukey-Kramer多重比较测试分析数据（P <.05）。结果：测试的6种堆芯材料中有5种在第一天就显示出最初的高浓度氟化物释放，并在研究期间逐渐变细。在89天的测试期内，Fuji II LC始终释放出比其他任何材料都要多的氟化物。结论：Fuji II LC释放的氟化物最多，并且与其他测试材料明显不同。在最初的24小时内，六种材料中的五种释放出最大量的氟化物，并在89天的测试期内逐渐变细。

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