PMID: 6987385Apr 1, 1980Paper

Evaluation of three variables affecting the casting of base metal alloys

The Journal of Prosthetic Dentistry
T A WightR W Gaugler

Abstract

All the vented samples with sprue widths of 2 mm or more were defect free, whereas the corresponding unvented samples had extensive voids and porosity in all but one casting. All castings with a sprue width of 1 mm were defective regardless of whether or not vents were used. The thickness of the investment above the pattern had no effect on casting results.

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Dental Alloys
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