Optical properties and surface roughness of prepolymerized poly(methyl methacrylate) denture base materials

dc.authoridYilmaz, Burak/0000-0002-7101-363X
dc.authoridCakmak, Gulce/0000-0003-1751-9207
dc.authoridJohnston, William Michael/0000-0002-4977-6569
dc.authorscopusid57193141901
dc.authorscopusid34769682900
dc.authorscopusid35583824600
dc.authorwosidYilmaz, Burak/AAE-5350-2019
dc.authorwosidJohnston, William Michael/E-8458-2012
dc.contributor.authorAlp, Gulce
dc.contributor.authorJohnston, William M.
dc.contributor.authorYilmaz, Burak
dc.date.accessioned2024-05-25T11:41:03Z
dc.date.available2024-05-25T11:41:03Z
dc.date.issued2019
dc.departmentOkan Universityen_US
dc.department-temp[Alp, Gulce; Johnston, William M.; Yilmaz, Burak] Ohio State Univ, Coll Dent, Div Restorat & Prosthet Dent, Columbus, OH 43210 USA; [Alp, Gulce] Okan Univ, Dept Prosthodont, Fac Dent, TR-34959 Istanbul, Turkeyen_US
dc.descriptionYilmaz, Burak/0000-0002-7101-363X; Cakmak, Gulce/0000-0003-1751-9207; Johnston, William Michael/0000-0002-4977-6569en_US
dc.description.abstractStatement of problem. Studies of the color stability, relative translucency, and surface roughness of newly introduced computer-assisted design and computer-assisted manufacturing (CAD-CAM) prepolymerized poly(methyl methacrylate) (PMMA) denture base materials are lacking. Purpose. The purpose of this in vitro study was to evaluate the color stability, relative translucency, and surface roughness of conventional and different prepolymerized CAD-CAM PMMA denture base materials after coffee thermocycling (CTC). Material and methods. Six disk-shaped specimens (10x2 mm) were prepared from 3 different brands of prepolymerized CAD-CAM PMMA and a conventional heat-polymerized PMMA denture base material (N=24). Specimens were polished conventionally in 2 stages. The specimens were subjected to 5000 coffee thermocycles. The surface roughness (R-a) of each specimen was measured 3 times before and after CTC, using a contact profilometer, and the mean roughness (R-a) values were calculated. The color coordinates of the specimens were determined by using a noncontact spectroradiometer, and color differences and relative translucency parameter (RTP) values were calculated by using CIEDE2000 color difference and RTPCIEDE2000 formulas. ANOVA was used to analyze surface roughness values, CIEDE2000 color differences, and RTP values (alpha=.05). Result. CTC did not change the color of the tested materials. However, with regard to relative translucency, 2-way ANOVA revealed a significant interaction between the material and CTC (P=.011). Also, although CTC increased the surface roughness of all tested materials (P=.031), R-a values were lower than the plaque accumulation threshold of R-a =0.2 mu m. Conclusion. Mean color changes in all materials were clinically imperceptible after 5000 coffee thermocycles. One tested material had significantly lower relative translucency than other materials before and after CTC. The surface roughness values of all tested denture base materials were below the plaque accumulation threshold.en_US
dc.identifier.citation94
dc.identifier.doi10.1016/j.prosdent.2018.03.001
dc.identifier.endpage352en_US
dc.identifier.issn0022-3913
dc.identifier.issn1097-6841
dc.identifier.issue2en_US
dc.identifier.pmid30143239
dc.identifier.scopus2-s2.0-85051720029
dc.identifier.scopusqualityQ1
dc.identifier.startpage347en_US
dc.identifier.urihttps://doi.org/10.1016/j.prosdent.2018.03.001
dc.identifier.urihttps://hdl.handle.net/20.500.14517/1461
dc.identifier.volume121en_US
dc.identifier.wosWOS:000457590900029
dc.identifier.wosqualityQ1
dc.language.isoen
dc.publisherMosby-elsevieren_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keyword Available]en_US
dc.titleOptical properties and surface roughness of prepolymerized poly(methyl methacrylate) denture base materialsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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