| Autor: |
Loney, Robert W., Price, Richard B. T., Murphy, Darcy G. |
| Předmět: |
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| Zdroj: |
International Journal of Prosthodontics; May/Jun2000, Vol. 13 Issue 3, p209-213, 5p, 4 Black and White Photographs, 4 Charts |
| Abstrakt: |
Purpose: Surface roughness can affect microbial colonization of long-term denture liners, alloys, and denture acrylic. The purpose of the present study was to examine the effect of finishing and polishing procedures on surface roughness of 4 temporary resilient denture liners (tissue conditioners). Materials and Methods: Mean surface roughness was measured for 4 materials (Lynal, Visco-gel, Coe-Soft, and Functional Impression Tissue Toner [FITT]) finished in 4 ways: unfinished (control); polished; reduced, unpolished; and reduced, polished. Samples were allowed to polymerize at 37°C for 24 hours, and the surface roughness was measured using a Mitutoyo Surftest 212. Results: Mean surface roughness ranged from 1.8 ± 0.8 µm for polished Lynal to 7.8 ± 1.1 µm for reduced, unpolished FITT. All polished samples were smoother than unpolished samples (including controls), whether or not the samples were reduced with a bur. Conclusion: Polished samples of tissue conditioning material had lower mean surface roughness measurements than control or reduced, unpolished samples at the 95% level of confidence. There was no difference in mean surface roughness measurements of control samples and unpolished samples reduced with a bur at the 95% level of confidence. Mean surface roughness differed significantly between the materials tested. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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