2011•Journal of Dental Rehabilitation and Applied ScienceRequires access
The Effect of Titanium on the Castability of Cobalt-Chrome Alloy
Su-Kyoung Ryu, Hee-Jeong Chung, Mong-Sook Vang, Hong-So Yang, Hyun‐Pil Lim, Kwi‐Dug Yun, Sang‐Won Park
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Abstract
Purpose of this experiment is to evaluate the effect of titanium on the castability when the titanium is added to the Co-Cr alloy. Raw materials Cobalt, Chrome, Molybdenum, Silicon, Manganase, Carbon, Nitrogen, Titanium were weighted and prepared. Biosil F (Degudent, Germany) was the control group. To the experimental group, different weight percent of titanium was added from 1 wt% to 4 wt%. The wax pattern is 30 X 40 ㎝ in size, rectangular in shape and has total of 160 grids. Centrifugal machine (Neutrodyne Easy Ti: Manfredy) was used for casting. For evaluation of the castability, the number of complete grids was counted by visual inspection and X-ray inspection. The test showed similar castability with the control group in the titanium addition of 1 wt% to 3 wt%. The titanium addition of 4 wt% showed poor result. With titanium lower than 4 wt%, the experiment metals showed proper castability with high expectation of successful clinical use.