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A Simple and Inexpensive Method for Determining Cold Sensitivity and Adaptation in Mice
Published on: March 17, 2015
[Effect of investment on adaptation of the PFM coping]
1Department of Microbiology, Hubei Medical College, Wuhan.
Abstract:
The purpose of this study is to investigate the influence of two investing methods, one time investment and two-time investment, to the adaptability of the PFM coping, using CW-PA base alloy and its phosphate investment. The result shows that the expansion of the investment is influenced by the investing methods (P less than 0.05). One-time investment has a larger expansion than two-time one for the cause of that it is without limit of the gypsum investment. It can compensate the Ni-Cr-Nb base alloy's contraction more fully, therefore a better fit of the PFM coping can be got.
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