Grindability of dental magnetic alloys.
In this study, the grindability of cast magnetic alloys (Fe-Pt-Nb magnetic alloy and magnetic stainless steel) was evaluated and compared with that of conventional dental casting alloys (Ag-Pd-Au alloy, Type 4 gold alloy, and cobalt-chromium alloy). Grindability was evaluated in terms of grinding rate (i.e., volume of metal removed per minute) and grinding ratio (i.e., volume ratio of metal removed compared to wheel material lost). Solution treated Fe-Pt-Nb magnetic alloy had a significantly higher grinding rate than the aged one at a grinding speed of 750-1500 m x min(-1). At 500 m x min(-1), there were no significant differences in grinding rate between solution treated and aged Fe-Pt-Nb magnetic alloys. At a lower speed of 500 m x min(-1) or 750 m x min(-1), it was found that the grinding rates of aged Fe-Pt-Nb magnetic alloy and stainless steel were higher than those of conventional casting alloys.
Hayashi
Eisei
E
Division of Fixed Prosthodontics, Graduate School of Dentistry, Tohoku University, 4-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan. eisei@mail.tains.tohoku.ac.jp
Kikuchi
Masafumi
M
Okuno
Osamu
O
Kimura
Kohei
K
D000704:Analysis of Variance; D002858:Chromium Alloys; D003722:Dental Alloys / Q000737:chemistry; D003775:Dental Polishing; D006047:Gold Alloys; D006244:Hardness; D007501:Iron; D008280:Magnetics; D008422:Materials Testing; D008669:Metallurgy; D008855:Microscopy, Electron, Scanning; D009556:Niobium; D010984:Platinum; D013193:Stainless Steel; D013499:Surface Properties
C477623:AuPdAg alloy; D002858:Chromium Alloys; D003722:Dental Alloys; C503680:Fe-Pt-Nb alloy; D006047:Gold Alloys; D009556:Niobium; D013193:Stainless Steel; D010984:Platinum; D007501:Iron