The Effect of a Polishing Protocol on the Surface Roughness of Zirconium Oxide
| Autor: | Evelina Gineviciute, Valda Valantiejiene, Tomas Linkevicius, Laura Linkeviciene, Rolandas Andrijauskas, Jonas Alkimavicius |
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| Rok vydání: | 2020 |
| Předmět: |
Zirconium
Materials science Surface Properties Abrasive Analytical chemistry Polishing chemistry.chemical_element Diamond 030206 dentistry General Medicine Surface finish engineering.material Dental Polishing 03 medical and health sciences 0302 clinical medicine chemistry Materials Testing Microscopy Electron Scanning Surface roughness engineering Cubic zirconia Profilometer Oral Surgery |
| Zdroj: | The International Journal of Prosthodontics. 33:217-223 |
| ISSN: | 0893-2174 |
| DOI: | 10.11607/ijp.6686 |
| Popis: | Purpose To evaluate the surface roughness values of zirconium oxide samples that were gradually polished using a commercially available polishing system and polishing paste. Materials and methods A total of 50 rectangular specimens of predetermined size (10 × 10 × 3 mm) were sintered from zirconium oxide. Samples were randomly assigned to one of five groups (n = 10 each): control, coarse (Co), fine (F), super fine (SF), or polishing paste (PP). In the control group, no polishing was done; in the Co group, a coarse polisher was used; and the specimens in the remaining three groups underwent additional processing with a fine rubber abrasive. For SF and PP samples, subsequent treatment with a super fine polisher was applied. Finally, for the PP group, a goat-hair brush with diamond polishing paste was used. An optical profilometer was used to evaluate roughness average (Ra) in micrometers (μm). ANOVA and Games-Howell post hoc tests were utilized to detect differences between groups. The significance level was set to α = .05. Results Surface roughness gradually decreased with further polishing throughout the groups: control Ra = 0.525 ± 0.099 μm; Co Ra = 0.252 ± 0.038 μm; F Ra = 0.196 ± 0.035 μm; SF Ra = 0.114 ± 0.031 μm; and PP Ra = 0.054 ± 0.020 μm. Statistically significant differences were detected among all groups (P Conclusion A surface roughness of 0.054 μm can be achieved if a full zirconia polishing protocol is used. Zirconium oxide can be polished to various surface roughnesses using commercially available polishing products. |
| Databáze: | OpenAIRE |
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