Effect of phosphate-bonded investments on titanium reaction layer and crown fit.
Effect of phosphate-bonded investments on titanium reaction layer and crown fit.
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磷酸盐粘合包埋材料对钛反应层和牙冠贴合的影响。
DOI：
10.1590/s1806-83242010000200004
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发表时间：
2010
影响因子：
2.5
通讯作者：
G. Adabo
中科院分区：
文献类型：
--
作者：
S. S. Rocha;Fabiane Nogueira;A. R. F. Pieralini;R. Ribeiro;G. Adabo
本研究分析了反应层，并测量了在以下条件下（液体浓度/铸造温度）制备的铸造钛应用于不同磷酸盐结合模的边缘冠配合度：Rema Exakt (RE) -100%/ 237℃，75%/287℃，Castorit Super C (CS)-100%/70℃，75%/141℃和Rematitan Plus (RP)- 100%/430℃（钛铸件专用，作为对照组）。采用维氏硬度检验对反应层进行研究，采用双因素方差分析和Tukey’s HSD检验（α = 0.05）进行分析。对固定在模具上的牙冠拍摄数码照片，使用图像分析系统和单因素方差分析测量不匹配度，并采用Tukey检验（alpha = 0.05）。硬度从表面（601.17 VHN）下降到150微米（204.03 VHN）。CS 75%/141°C组的硬度高于其他组，表明表面污染程度较高，但在深度超过150°C的测量中，各组之间没有差异。CS -100%/ 70℃的铸件的边缘不匹配程度最低，其次是RE -100%/237℃。常规熔模CS（100%）和RE（100%）的边缘不匹配程度优于RP，但CS（75%）的表面污染程度更高。
This study analyzed the reaction layer and measured the marginal crown fit of cast titanium applied to different phosphate-bonded investments, prepared under the following conditions (liquid concentration/casting temperature): Rema Exakt (RE) - 100%/237 degrees C, 75%/287 degrees C, Castorit Super C (CS)-100%/70 degrees C, 75%/141 degrees C and Rematitan Plus (RP)- 100%/430 degrees C (special to titanium cast, as the control group). The reaction layer was studied using the Vickers hardness test, and analyzed by two way ANOVA and Tukey's HSD tests (alpha = 0.05). Digital photographs were taken of the crowns seated on the die, the misfit was measured using an image analysis system and One-way ANOVA, and Tukey's test was applied (alpha = 0.05). The hardness decreased from the surface (601.17 VHN) to 150 microm (204.03 VHN). The group CS 75%/141 degrees C presented higher hardness than the other groups, revealing higher surface contamination, but there were no differences among the groups at measurements deeper than 150 mum. The castings made with CS - 100%/70 degrees C presented the lowest levels of marginal misfit, followed by RE -100%/237 degrees C. The conventional investments CS (100%) and RE (100%) showed better marginal fit than RP, but the CS (75%) had higher surface contamination.
影响因子：
4.8
作者：
Grigoriou, V;Shapiro, IM;Adams, CS
通讯作者：
Adams, CS