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Comparison of castability and surface roughness of commercially pure titanium and cobalt-chromium denture frameworks
1Zesaeng Dental Hospital, Daejin University, Seoul, Korea. jkscdknu@unitel.co.kr
Statement Of Problem:
Titanium is a biocompatible material, but it is not widely used in clinical dentistry for conventional removable denture frameworks. Little research exists on its applicability.
Purpose:
This study compared the casting accuracy and roughness of titanium and cobalt-chromium denture frameworks.
Material And Methods:
Twenty Kennedy Class II, Division 1 removable partial denture frameworks were fabricated with commercially pure titanium (n = 10) and a cobalt-chromium alloy (n = 10). The casting accuracy of each framework was determined by visual, radiographic, and microscopic methods. The roughness of each polished framework surface was analyzed with atomic force microscopy.
Results:
The clinical fit, porosities, and microporosities of both types of metal frameworks were qualitatively similar. The surface roughness of polished pure titanium and cobalt-chromium frameworks was 104.43 +/- 69.24 nm and 133.91 +/- 40.92 nm, respectively. This difference was not statistically significant (P >.05).
Conclusion:
The clinical fit, porosity, and surface roughness of the titanium and cobalt-chromium frameworks fabricated for this study were comparable.