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  • The effect of gypsum products and separating materials on the typography of denture base materials.

The effect of gypsum products and separating materials on the typography of denture base materials.

The Journal of prosthetic dentistry (1980-09-01)
D N Firtell, J F Walsh, J M Elahi
摘要

The typography of polymethyl methacrylate processed against various gypsum products coated with various separating materials was studied under an SEM. Tinfoil and two commercial tin foil substitutes were used as separating material during processing, and the surfaces of the resulting acrylic resin forms were studied for topographical differences. Tinfoil and alpha 2 hemihydrates produced the smoothest surfaces. As a practical solution, a good quality tinfoil substitute and alpha 1 hemihydrate could be used when processing polymethyl methacrylate resin.

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锡, foil, 150x150mm, thickness 0.20mm, as rolled, 98.8%
锡, foil, 0.5m coil, thickness 0.009mm, 97.4%
锡, foil, 100x100mm, thickness 0.125mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.125mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 0.15mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.15mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 0.1mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.1mm, as rolled, 99.95%
锡, foil, 100x100mm, thickness 0.20mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.25mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.25mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 0.5mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 0.5mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 0.65mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 0.75mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 1.0mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 1.0mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 1.0mm, as rolled, 99.999%
锡, foil, 100x100mm, thickness 1.5mm, as rolled, 99.99+%
锡, foil, 100x100mm, thickness 2.0mm, as rolled, 98.8%
锡, foil, 100x100mm, thickness 2.0mm, as rolled, 99.99+%
锡, foil, 150x150mm, thickness 0.125mm, as rolled, 98.8%
锡, foil, 150x150mm, thickness 0.125mm, as rolled, 99.99+%
锡, foil, 150x150mm, thickness 0.15mm, as rolled, 98.8%
锡, foil, 150x150mm, thickness 0.1mm, as rolled, 98.8%
锡, foil, 150x150mm, thickness 0.1mm, as rolled, 99.95%
锡, foil, 150x150mm, thickness 0.25mm, as rolled, 98.8%
锡, foil, 150x150mm, thickness 0.25mm, as rolled, 99.99+%
锡, foil, 150x150mm, thickness 0.5mm, as rolled, 98.8%
锡, foil, 150x150mm, thickness 0.5mm, as rolled, 99.99+%

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