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The Effect of Titanium on the Castability of Cobalt-Chrome Alloy  

Ryu, Su-Kyoung (Department of Prosthodontics, Graduate school, Chonnam National University)
Chung, Hee-Jeong (Department of Prosthodontics, Graduate school, Chonnam National University)
Vang, Mong-Sook (Department of Prosthodontics, Graduate school, Chonnam National University)
Yang, Hong-So (Department of Prosthodontics, Graduate school, Chonnam National University)
Lim, Hyun-Pil (Department of Prosthodontics, Graduate school, Chonnam National University)
Yun, Kwi-Dug (Department of Prosthodontics, Graduate school, Chonnam National University)
Park, Sang-Won (Department of Prosthodontics, Graduate school, Chonnam National University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.27, no.1, 2011 , pp. 73-79 More about this Journal
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 $30{\times}40$ cm 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.
Keywords
castability; cobalt-chrome alloy; grid; partial denture; titanium;
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