Effect of coffee thermocycling on the surface roughness and stainability of nanographene-reinforced polymethyl methacrylate used for fixed definitive prostheses

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dc.authoridDonmez, Mustafa Borga/0000-0002-3094-7487
dc.authoridCakmak, Gulce/0000-0003-1751-9207
dc.authoridSchimmel, Martin/0000-0001-9700-5534
dc.authorwosidDonmez, Mustafa Borga/AGY-6155-2022
dc.authorwosidCakmak, Gulce/GRE-6472-2022
dc.authorwosidSchimmel, Martin/F-5694-2011
dc.contributor.authorCakmak, Gulce
dc.contributor.authorHerren, Kira Vera
dc.contributor.authorDonmez, Mustafa Borga
dc.contributor.authorKahveci, Cigern
dc.contributor.authorSchimmel, Martin
dc.contributor.authorYilmaz, Burak
dc.date.accessioned2024-05-19T14:50:32Z
dc.date.available2024-05-19T14:50:32Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractStatement of problem. A nanographene-reinforced polymethyl methacrylate (PMMA) has been introduced for definitive prostheses. However, knowledge on the surface roughness and stainability of this material is lacking.Purpose. The purpose of this in vitro study was to compare the surface roughness and stainability of nanographene-reinforced PMMA with those of a prepolymerized PMMA and a reinforced composite resin after coffee thermocycling.Material and methods. Disk-shaped specimens (F10x1.5-mm) were prepared from 3 different A1-shade millable resins (prepolymerized PMMA [M-PM; PMMA]; nanographene-reinforced PMMA [G-CAM; G-PMMA]; reinforced composite resin [Brilliant Crios; RCR]). Surface roughness (R-a) values were measured before and after conventional polishing by using a noncontact profilometer. Initial color coordinates were measured over a gray background with a spectrophotometer after polishing. Specimens were then thermocycled in coffee for 5000 cycles. Measurements were repeated after coffee thermocycling, and color differences (?E-00) were calculated. R-a values among different time intervals were analyzed by using either the Friedman and Dunn tests (RCR) or repeated measures analysis of variance (ANOVA) and Bonferroni corrected paired samples t tests (PMMA and G-PMMA), while R-a values within a time interval were analyzed by using either the Kruskal-Wallis and Dunn tests (before polishing) or 1-way ANOVA and Tukey HSD (after polishing) or Tamhane T2 tests (after coffee thermocycling). ?E-00 values were analyzed by using 1-way ANOVA and Tukey HSD tests, while color coordinates of the specimens after polishing and after coffee thermocycling were compared by using paired samples t tests (a=.05).Results. All materials had their highest R-a values before polishing (P=.011), while differences after polishing and after coffee thermocycling values were nonsignificant (P=.140). PMMA had higher R(a )than RCR before polishing (P=.002), and RCR had higher values than G-PMMA after polishing and after coffee thermocycling (P=.023). RCR had the highest ?E-00 (P=.001). Polishing increased the b* values of PMMA, and coffee thermocycling increased the a* values of G-PMMA and all values of RCR (P=.012).Conclusions. The tested materials had similar and acceptable surface roughness after polishing. The surface roughness of materials was not affected by coffee thermocycling. Considering the reported color thresholds, all materials had acceptable color change, but the computer-aided design and computer-aided manufacturing composite resin had perceptible color change after coffee thermocycling.en_US
dc.identifier.doi10.1016/j.prosdent.2022.12.009
dc.identifier.endpage507000000en_US
dc.identifier.issn0022-3913
dc.identifier.issn1097-6841
dc.identifier.issue3en_US
dc.identifier.pmid36737355en_US
dc.identifier.scopus2-s2.0-85147224403en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage5070en_US
dc.identifier.urihttps://doi.org10.1016/j.prosdent.2022.12.009
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5738
dc.identifier.volume129en_US
dc.identifier.wosWOS:000956090000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMosby-Elsevieren_US
dc.relation.ispartofJournal of Prosthetic Dentistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectFlexural Strengthen_US
dc.subjectCad/Camen_US
dc.subjectPmmaen_US
dc.titleEffect of coffee thermocycling on the surface roughness and stainability of nanographene-reinforced polymethyl methacrylate used for fixed definitive prosthesesen_US
dc.typeArticleen_US

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