An Investigation into the Effects of Sprue Attachment Design on Porosity and Castability

Abstract

Many variables are involved in the process of fabricating a dense dental casting which accurately duplicates the wax pattern. The type of sprue design that is utilized has been shown to play a important role in the casing process. The literature is filed with conflicting results and conclusions regarding proper sprue attachment design. The objective of this investigation was to evaluate the effects of four different sprue attachment designs (Gradual Constriction, Abrupt Constriction, Flared, and Straight) on the porosity and castability of three different dental casting alloys: Firmailay, a Type II gold alloy; Jel-5, a palladium-silver alloy; and Rexillium III, a base-metal alloy.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1990
Accession Number
ADA227698

Entities

People

  • John A. Levon

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Biomedical
  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Analysis Of Variance
  • Back Pressure
  • Chemistry
  • Chromium Alloys
  • Dental Materials
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Physical Properties
  • Solid Solutions
  • Statistical Analysis

Fields of Study

  • Materials science

Readers

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  • Metallurgy
  • Systems Analysis and Design