The dimensional accuracy of 12 impression material and die stone combinations.
The dimensional accuracy of 12 impression material and die stone combinations.
复制标题
12 种印模材料和模具石组合的尺寸精度。
DOI：
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发表时间：
1991
影响因子：
2.3
通讯作者：
R. Macsween
中科院分区：
文献类型：
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作者：
R. Price;J. Gerrow;E. Sutow;R. Macsween
本研究确定了使用四种压模材料和三种IV型模石组合制成的模具的尺寸精度。为磨牙全铸造冠准备了金属模具，并使用12种不同的压模材料和模石组合制作了10个石头复制品。用移动显微镜在三个方向上测量了金属和石头模具上参考点之间的距离。方差分析和邓肯MR比较(P小于等于。05)表明所有的石头模具都比金属模具大。虽然一些压模材料/模石组合之间存在显著差异，但所有的模石之间的距离都在9微米以内。没有一种压模材料/模石组合在三个测量方向上始终产生最小或最大的模具。
This study determined the dimensional accuracy of dies made using a combination of four impression materials and three Type IV die stones. A metal die was prepared for a molar complete cast crown, and 10 stone replicas were made using 12 different combinations of impression materials and die stones. The distances between reference points on the metal and stone dies were measured in three directions with a traveling microscope. Analysis of variance and Duncan's MR comparisons (P less than or equal to .05) showed that all of the stone dies were larger than the metal die. Although there were significant differences between some of the impression material/die stone combinations, all of the stone dies were measured to be within 9 microns of each other. No one impression material/die stone combination consistently produced the smallest or largest die in the three measured directions.