AI Article Synopsis
- The study investigates how the melting temperatures of cobalt-chromium (Co-Cr) alloys affect the fit of implant cylinders.
- Two groups of Co-Cr cylinders were created: one with high melting temperatures (HMT) and one with low melting temperatures (LMT), alongside a control group.
- Results show that HMT cylinders had a significantly worse marginal fit compared to LMT and control cylinders, though no differences in dimensional stability were found.
Article Abstract
Purpose: To evaluate the influence of cobalt-chromium (Co-Cr) casting alloys' melting temperatures on the cast-to Co-Cr implant cylinders' marginal fit.
Materials And Methods: Co-Cr alloys with different melting ranges were cast into 20 Co-Cr cylinders: 10 in a high-melting temperature (HMT) group and 10 in a low-melting temperature (LMT) group. Ten cylinders were used as received as a control group. Cylinders' marginal misfit and dimensional stability were evaluated using scanning electron microscopy (×500).
Results And Conclusion: HMT cylinders showed significant differences in marginal misfit (2.48 ± 1.07 μm) compared to LMT (1.53 ± 0.37 μm) and control (1.27 ± 0.57 μm) cylinders, but there were no differences in dimensional stability. HMT Co-Cr alloys produce implant-supported prostheses with poor marginal fit.
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| http://dx.doi.org/10.11607/ijp.5720 | DOI Listing |
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