@article{oai:ir.kagoshima-u.ac.jp:00008687,
 author = {菊地, 聖史 and KIKUCHI, Masafumi},
 journal = {鹿児島大学歯学部紀要},
 month = {Mar},
 note = {Dental prostheses are usually made by a casting process. Most currently available dental alloys are therefore developed to facilitate dental casting. Cutting and grinding of dental materials have been regarded as finishing processes rather than forming methods. Current CAD/CAM technology is a considerable advancement over conventional dental casting, and machining has become one of the important forming methods. However, few dental alloys have been developed for good machinability (ease of cutting or grinding). Titanium is widely known as an excellent biomaterial because of its superior biocompatibility and corrosion
resistance, but it remains one of the most difficult dental materials to process. Some dental applications demand materials with high strength as well as improved machinability. To this end, in this study, experimental titanium alloys were developed for dental CAD/CAM systems. The alloying elements chosen were copper, silver, and gold from β-eutectoid elements and zirconium, niobium, and hafnium from β-isomorphous elements. Among the experimental binary titanium alloys tested, certain Ti-Ag alloys were found to provide
both better machinability and higher strength compared to unalloyed titanium. The improved machinability could be attributed to the finely dispersed brittle second phase that reduces elongation. The Ti-Ag alloys
showed both corrosion resistance comparable to unalloyed titanium and anti-biofilm characteristics with no bactericidal activity. The spontaneous formation of calcium phosphate on the alloys in simulated body fluid was also confirmed. Ti-Ag alloys are thus good candidates for use as machinable dental biomaterials.},
 pages = {41--51},
 title = {歯科CAD/CAM システムに適したチタン合金の開発},
 volume = {34},
 year = {2014}
}