Comparative Tensile Strengths of Non-Precious Dental Alloy Solders.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
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The dental profession is ever increasingly faced with the reality of materials cost, especially precious metal alloys. In recent years, much emphasis has been placed on alternative materials. This heightened attention has resulted in the formulation, improvement and wide spread usage of what is referred to as the base or non-precious alloys. Most of these are chromium-nickel alloys with various other metals added in small varying percentages depending on the manufacturer. The purpose of this study was to investigate the ultimate tensile strengths of six commercially available non-precious dental alloys and their solders. The alloys and solders tested were Biobond, Ceramalloy, Cospan, Litecast B, Microbond and Unibond. Uniform tensile specimens were cast using each alloy. these specimens were then positioned on an aligning device at a gap distance of .33 mm. They were invested and soldered with the high fusing solders supplied for pre-porcelain soldering, using a gasoxygen torch. Two alloys, Microbond and Biobond, were also tested in the post-porcelain solder mode. All procedures were performed according to the manufacturers recommendations. Author
- Medicine and Medical Research