title: Grindability of dental cast Ti-Ag and Ti-Cu alloys.
abstract: Experimental Ti-Ag alloys (5, 10, and 20 mass% Ag) and Ti-Cu alloys (2, 5, and 10 mass% Cu) were cast into magnesia molds using a dental casting machine, and their grindability was investigated. At the lowest grinding speed (500 m min(-1)), there were no statistical differences among the grindability values of the titanium and titanium alloys. The grindability of the alloys increased as the grinding speed increased. At the highest grinding speed (1500 m x min(-1)), the grindability of the 20% Ag, 5% Cu, and 10% Cu alloys was significantly higher than that of titanium. It was found that alloying with silver or copper improved the grindability of titanium, particularly at a high speed. It appeared that the decrease in elongation caused by the precipitation of small amounts of intermetallic compounds primarily contributed to the favorable grindability of the experimental alloys.
authors.affiliation: Division of Dental Biomaterials, Graduate School of Dentistry, Tohoku University, 4-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Kikuchi
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Takahashi
authors.forename: Toru
authors.initials: T
authors.lastname: Okabe
authors.forename: Osamu
authors.initials: O
authors.lastname: Okuno
mesh_terms: D003300:Copper / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D003734:Dental Casting Investment / Q000737:chemistry*; D003735:Dental Casting Technique; D003754:Dental High-Speed Equipment; D004548:Elasticity; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium / Q000737:chemistry*
chemical_list: D003722:Dental Alloys; D003734:Dental Casting Investment; D012834:Silver; D003300:Copper; D014025:Titanium