Analysis of the Marginal Fit and Dimensional Stability of Cast-to Cobalt-Chromium Implant Cylinders Cast from Different Alloys.
| Autor: | Fulginiti RL, Grossi ML, Ozkomur A, Rodrigues Neto DJ, Shinkai RSA, Teixeira ER |
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| Jazyk: | angličtina |
| Zdroj: | The International journal of prosthodontics [Int J Prosthodont] 2018 Jul/Aug; Vol. 31 (4), pp. 367-369. |
| DOI: | 10.11607/ijp.5720 |
| Abstrakt: | 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 2 ) compared to LMT (1.53 ± 0.37 μm 2 ) and control (1.27 ± 0.57 μm 2 ) cylinders, but there were no differences in dimensional stability. HMT Co-Cr alloys produce implant-supported prostheses with poor marginal fit. |
| Databáze: | MEDLINE |
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