Cobalt-chromium-titanium alloy for removable partial dentures.
Pure elemental titanium was alloyed with cobalt and chromium in dilutions of 4%, 5%, and 6% to evaluate the suitability of the resulting alloy for removable partial denture frameworks. The physical properties of the Co-Cr-Ti alloy were compared to the properties of a commercial pure titanium and Vitallium. Clasp replicas were cast in Co-Cr-Ti and Vitallium and subjected to cyclic deflection. Representative specimens from the fatigue failure tests were then evaluated using scanning electron microscopy and analyzed for elemental content. The 5% titanium dilution of cobalt-chromium proved to have the best physical properties and was used for comparison with the pure titanium and Vitallium. The Co-Cr-5% Ti had significantly better physical properties than pure titanium and a greater flexure fatigue limit than the Vitallium alloy.
Iwama
C Y
CY
Don and Sybil Harrington Foundation, Los Angeles, California, USA.
Preston
J D
JD
D002858:Chromium Alloys / Q000737:chemistry; D003035:Cobalt; D016734:Dental Clasps; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis; D003779:Denture Design; D003832:Denture, Partial, Removable; D004548:Elasticity; D006801:Humans; D018583:Pliability; D013718:Tensile Strength; D014025:Titanium; D014800:Vitallium
D002858:Chromium Alloys; D014800:Vitallium; D003035:Cobalt; D014025:Titanium