| Autor: |
Gülce Çakmak, Mustafa Borga Donmez, Sevda Atalay, Marcella Silva de Paula, Manrique Fonseca, 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, Mustafa Borga Dönmez / 57202022054 |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Popis: |
STATEMENT OF PROBLEM Denture bases machined from prepolymerized materials have become popular. However, information on the effect of simulated brushing and coffee thermocycling (CTC) on their surface roughness and stainability is lacking. PURPOSE The purpose of this in vitro study was to compare the effect of simulated brushing and CTC on the surface roughness (Ra) and stainability of computer-aided design and computer-aided manufacturing (CAD-CAM) denture base materials and a heat-polymerized denture base material. MATERIAL AND METHODS Forty disk-shaped specimens were prepared from 3 CAD-CAM denture base resins (AvaDent, AV; Merz M-PM, M-PM; and Polident d.o.o, Poli) and a heat-polymerized polymethylmethacrylate resin (Promolux, CV) (n=10). Ra values of the specimens were measured by using a noncontact profilometer after conventional polishing. The color coordinates were also measured over a gray background with a spectrophotometer. Specimens were then consecutively subjected to simulated brushing for 20 000 cycles, CTC for 5000 cycles, and another 10 000 brushing cycles. Ra and color coordinates were measured after each interval. Color differences (ΔE00) were calculated by using the CIEDE2000 formula, and the data were analyzed by using 2-way analysis of variance and Tukey honestly significant difference tests (α=0.05). RESULTS The time interval had a significant effect on Ra (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
