Comparison of castability and surface roughness of commercially pure titanium and cobalt-chromium denture frameworks.
J Prosthet Dent 2001;
86:93-8. [PMID:
11458267 DOI:
10.1067/mpr.2001.116168]
[Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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.
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