Results 141 to 150 of about 1,955,165 (188)
Modeling the surface contamination of dental titanium investment castings
Dental Materials, 2005 The objective of this study was to develop a computational tool for assisting the design of titanium dental castings with minimal defects and to compare computational simulations with casting experiments.Modeling. An in-house cellular-automata solidification and finite-difference diffusion program was coupled with a commercial casting program and ...
Peter D. Lee, R C Atwood, P D Lee
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An improved dental casting investment
European Journal of Oral Sciences, 1980Abstract –In the present investigation a gypsum‐bonded investment is presented with negligible setting expansion and a thermal expansion of 1. 7%. This investment can and should be used without a steel casting ring. In combination with an earlier described die‐spacing technique the new investment facilitates the production of gold inlays and crowns ...
W Finger, K D Jørgensen
exaly +3 more sources
Permeability and porosity of dental casting investments
Journal of Prosthetic Dentistry, 1975Permeability of various gypsum- and phosphate-bonded investments was measured during conventional burn-out procedures. Porosity determinations were made on specimens cooled to room temperature after burn-out. As a group, the gypsum-bonded investments were found to be more permeable than the phosphate-bonded investments. Two phosphate-bonded investments
K F Leinfelder +2 more
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The permeability of dental casting investments
Journal of Dentistry, 1974Gas permeation through investment materials is important in obtaining sound castings by centrifugal or gas-pressure techniques. The equations governing permeation are presented, followed by measurements of the permeability to air of casting investments, comparing different types of material, powder : liquid ratios, and bake-out temperatures.
openaire +2 more sources
The Behavior and Measurement of Hygroscopic Expansion of Dental Casting Investment
Journal of Dental Research, 1954Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/67033/2/10.1177_00220345540330041201 ...
Asgarzadeh, K. +2 more
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The hygroscopic setting. Expansion of a dental casting investment
Journal of Prosthetic Dentistry, 1953F A Peyton
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Thermal Behavior of the Gypsum Binder in Dental Casting Investments
Journal of Dental Research, 1986This study examined the thermal behavior of cast gypsum specimens, with and without additives, by means of simultaneous differential thermal analysis-thermogravimetry (DTA-TG) and dilatometry. Specimens were prepared from wet-calcined hemihydrates (Hydrocal and Den-site). The additives studied were boric acid (H
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The Mechanism of Hygroscopic Expansion in Dental Casting Investments
Journal of Dental Research, 1955H W, LYON, G, DICKSON, I C, SCHOONOVER
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