Influence different polishing systems on roughness and colour stability of chairside CAD/CAM blocks with laminate veneer thickness
| Autor: | Rafat Sasany, Göknil Ergün Kunt, Mehmet Faruk Koca |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Applied Biomaterials & Functional Materials, Vol 20 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2280-8000 22808000 |
| DOI: | 10.1177/22808000221086493 |
| Popis: | Objective: The aim of this study was to evaluate the effect of different polishing systems on the colour stability of different laminate veneer blocks for chair-side CAD-CAM after ultraviolet (UV) ageing. Methods: About 240 sample (13 × 13 × 0.7) were prepared from four different CAD-CAM blocks IPS e.max CAD (IP), IPS Empress CAD (IE), Mark II (M) and Lava Ultimate (LU)) with A1 shade. Each group was divided into five subgroups ( n = 12) according to the control (C) and four different polishing system: Sof-Lex (S), Edenta (E), Identoflex (I) and Zircon Brite (Z). Surface roughnesses (Ra) were measured by a profilometer before and after polishing. The baseline colour values were recorded according to the CIELab system. The colour coordinates (L*, a* and b*) of the samples were measured before and after UV ageing, and colour differences (ΔE 00 ) were calculated by using the CIEDE2000 colour difference formula. A two-way ANOVA and Tukey test methods were used to analyse the data (α = 0.05). Results: A significant interaction was observed between CAD-CAM blocks and polishing system ( p |
| Databáze: | Directory of Open Access Journals |
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