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首页> 外文期刊>The Journal of Prosthetic Dentistry >Film thicknesses of recently introduced luting cements.
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Film thicknesses of recently introduced luting cements.

机译：最近推出的胶结水泥的膜厚。

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STATEMENT OF PROBLEM: A luting cement must maintain a minimum film thickness over a sufficient period of time to allow seating of indirect restorations. The performance of newer luting cements in this regard has not been evaluated. PURPOSE: The purpose of this study was to compare the film thicknesses of 6 luting cements, 2 resin-modified glass ionomer (FujiCEM and RelyX Luting Plus), 2 composite resin (Panavia 21 and RelyX ARC), and 2 self-adhesive resin (Maxcem and RelyX Unicem) cements, over 3 minutes. MATERIAL AND METHODS: The film thickness (microm) of each cement (n=7) was determined at room temperature at 1, 2, and 3 minutes after the start of mixing, according to the testing method set forth in ISO Standard 9917. Means of all cements were compared at the 2-minute interval, and means at the 1- and 3-minute intervals for each were compared to the mean for the same cement at 2 minutes, using 1-way analyses of variance (ANOVA) and Tukey-Kramer multiple comparison tests (alpha=.05). RESULTS: Except for 1 resin-modified material at 3 minutes, a point beyond its specified working time, all materials produced film thicknesses under 30 microm at 3 minutes and under 26 microm at 2 minutes. CONCLUSIONS: All of the materials tested meet the ISO standard of 25-microm maximum film thickness for up to 2 minutes after mixing.
机译：问题陈述：胶凝水泥必须在足够长的时间内保持最小的膜厚度，以允许间接修复体就位。在这方面，新型胶结水泥的性能尚未得到评估。目的：本研究的目的是比较6种胶凝水泥，2种树脂改性的玻璃离聚物（FujiCEM和RelyX Luting Plus），2种复合树脂（Panavia 21和RelyX ARC）和2种自粘树脂（ Maxcem和RelyX Unicem）水泥，持续3分钟。材料和方法：按照ISO标准9917规定的测试方法，在开始混合后的1分钟，2分钟和3分钟时，在室温下确定每种水泥（n = 7）的膜厚度（微米）。使用2方差（ANOVA）和Tukey，以2分钟为间隔比较所有水泥中的水泥，并以1分钟和3分钟为间隔将平均值与2分钟时相同水泥的平均值进行比较-Kramer多重比较测试（alpha = .05）。结果：除了一种树脂改性材料在3分钟后（超出其指定的工作时间）外，所有材料在3分钟时产生的膜厚均在30微米以下，在2分钟时产生的膜厚则在26微米以下。结论：混合后最多2分钟，所有测试的材料均符合ISO标准的最大膜厚度为25微米的规定。

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