| Autor: |
Gülce Çakmak, Mustafa Borga Donmez, Canan Akay, Sevda Atalay, Marcella Silva de Paula, Martin Schimmel, Burak Yilmaz |
| Přispěvatelé: |
İstinye Üniversitesi, Diş Hekimliği Fakültesi, Klinik Bilimler Bölümü, Mustafa Borga Dönmez / 0000-0002-3094-7487, Dönmez, Mustafa Borga, Mustafa Borga Dönmez / AGY-6155-2022 |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Çakmak, Gülce; Donmez, Mustafa Borga; Akay, Canan; Atalay, Sevda; Silva de Paula, Marcella; Schimmel, Martin; Yilmaz, Burak (2022). Effect of simulated brushing and disinfection on the surface roughness and color stability of CAD-CAM denture base materials. Journal of the mechanical behavior of biomedical materials, 134, p. 105390. Elsevier 10.1016/j.jmbbm.2022.105390 |
| Popis: |
PURPOSE To evaluate the effect of simulated brushing and chemical disinfection on the surface roughness and color stability of CAD-CAM denture base materials and to compare with those of a heat-cured denture base material. MATERIAL AND METHODS Disk-shaped specimens (Ø 10mm × 2 mm) were prepared from 3 CAD-CAM denture base resins (AvaDent, Ava; Merz M-PM, Merz; Polident d.o.o, Poli) and a heat-cured polymethylmethacrylate resin (Promolux, Conv) (n = 30). After polishing, baseline surface roughness (Ra) and color coordinates were measured. The measurements were repeated after 20000 cycles of simulated brushing, and the specimens were divided into 3 groups according to disinfection protocol (distilled water, 1% sodium hypochlorite (NaOCl), and effervescent tablet) (n = 10). After 9 cleaning cycles over a period of 20 days, Ra and color coordinates were remeasured. Color differences (ΔE00) were calculated by using CIEDE2000 formula. One-way analysis of variance (ANOVA) and pairwise t-tests were used to analyze Ra and ΔE00 data, while repeated measures ANOVA test was used to compare baseline, after brush, and after disinfection Ra values (α = 0.05). RESULTS Brushing did not affect the Ra values of tested materials (P ≥ .08). Both before and after brushing, Merz and Conv had higher Ra values than Poli and Ava (P < .001). Among disinfectants, effervescent tablet led to the lowest Ra for Merz (P = .003) and the highest Ra for Poli (P ≤ .039). Only NaOCl resulted in significant differences among the Ra of materials (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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