Flexural Strength and Vickers Microhardness of Graphene-Doped SnO2 Thin-Film-Coated Polymethylmethacrylate after Thermocycling

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dc.authoridAbou-Ayash, Samir/0000-0003-1047-5571
dc.authoridDonmez, Mustafa Borga/0000-0002-3094-7487
dc.authoridAKAY, CANAN/0000-0003-2781-8710
dc.authoridCakmak, Gulce/0000-0003-1751-9207
dc.authorwosidAbou-Ayash, Samir/HTM-2215-2023
dc.authorwosidCakmak, Gulce/GRE-6472-2022
dc.authorwosidDonmez, Mustafa Borga/AGY-6155-2022
dc.authorwosidAKAY, CANAN/F-8368-2015
dc.contributor.authorAkay, Canan
dc.contributor.authorCakmak, Gulce
dc.contributor.authorDonmez, Mustafa Borga
dc.contributor.authorAbou-Ayash, Samir
dc.contributor.authorMumcu, Emre
dc.contributor.authorPat, Suat
dc.contributor.authorYilmaz, Burak
dc.date.accessioned2024-05-19T14:41:59Z
dc.date.available2024-05-19T14:41:59Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractRemovable dental prostheses are commonly fabricated using polymethylmethacrylate, a material that does not have favorable mechanical properties and needs reinforcement with particles such as graphene. The aim of this study was to evaluate the flexural strength (FS) and Vickers microhardness of a heat-polymerized polymethylmethacrylate coated with graphene-doped stannic oxide (SnO2) thin films using a thermionic vacuum arc method after thermocycling. Forty bar-shaped specimens (65 x 10 x 3 mm) were fabricated using a heat-polymerized denture base resin and divided into four groups according to the graphene-doped SnO2 thin film surface coating performed: No-coat (uncoated), Coat-15 s (coating duration of 15 s), Coat-20 s (coating duration of 20 s), and Coat-30 s (coating duration of 30 s) (n = 10). The thermionic vacuum arc method was used to coat both surfaces of the specimens of each test group with varying durations, and surface coating was verified using Fourier Transform Infrared Spectroscopy. Specimens were subjected to 10,000 cycles of thermocycling. Atomic force microscopy was used to evaluate the surfaces of all specimens before and after thermocycling. Microhardness values were measured five times and averaged. Then, each specimen was subjected to a three-point bending test, and FS values were calculated. Data were analyzed using one-way analysis of variance and Bonferroni tests (& alpha; = 0.05). Differences among test groups were nonsignificant when FS data were considered (p = 0.605). However, significant differences were observed among test groups when Vickers microhardness data were considered (p < 0.001). Coat-30 s had the highest hardness (p & LE; 0.003), while the difference among remaining groups were nonsignificant (p & GE; 0.166). Graphene-doped SnO2 thin film surface coatings did not significantly affect the FS of tested heat-polymerized denture base resin but increased the Vickers microhardness when the coating duration was 30 s.en_US
dc.identifier.doi10.3390/coatings13061106
dc.identifier.issn2079-6412
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-85163879827en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org10.3390/coatings13061106
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5186
dc.identifier.volume13en_US
dc.identifier.wosWOS:001014206100001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofCoatingsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectGrapheneen_US
dc.subjectFlexural Strengthen_US
dc.subjectMicrohardnessen_US
dc.subjectThermionic Vacuumen_US
dc.titleFlexural Strength and Vickers Microhardness of Graphene-Doped SnO2 Thin-Film-Coated Polymethylmethacrylate after Thermocyclingen_US
dc.typeArticleen_US

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