{"title":"A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA","authors":"Server Mutluay Ünal","doi":"10.5577/intdentres.2022.vol12.no2.4","DOIUrl":null,"url":null,"abstract":"Aim: The aim of this study was to compare the effects of powder, mat, and sheet forms of graphene and polyvinylpyrrolidone (PVP) on the bending strength of polymethyl methacrylate (PMMA).\nMethodology: A total of 75 PMMA samples (64 x 13 x 3 mm) were obtained and separated into five groups of 15, one of which was the control group. No strengthening material was added to the control group samples. In the PMMA+Polyvinylpyrrolidone powder (PVPP) (Group B) and PMMA+Graphene powder (GP) groups (Group D), PVP (0.5%) and graphene (0.01%) powders, respectively were added to the PMMA. In the PMMA+Polyvinylpryrolidone fiber mat (PVPM) (Group C) and PMMA+Graphene sheet (GS) groups (Group E), a PVP mat and graphene sheet, respectively were placed in the center of a square PMMA resin mold. To measure the samples’ resistance to bending, the three-point bending test (ISO 1567) was applied. Fracture lines were examined under a scanning electron microscope (SEM), and bending strength was analyzed using one-way analysis of variance (ANOVA).\nResults: A statistically significant difference was determined between the GS (118.5093 ± 11.94859 Mpa) and PVPP (105.5267 ± 6.80595 Mpa) groups. The mean bending resistance values were numerically higher in the PVPM (115.8487 ± 17.15440), GS (118.5093 ± 11.94859), and GP (116.2680 ± 16.03207) groups compared to the control group (108.2407 ± 24.23104). The graphene sheets and PVP mats showed higher resistance to bending than the powder form of either material.\nConclusion: In clinical dental prosthesis use, PVP mats and graphene sheets are preferable with respect to both PMMA strengthening and color.\n \nHow to cite this article: \nMutluay Ünal S. A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA. Int Dent Res 2022;12(2):62-9. https://doi.org/10.5577/intdentres.2022.vol12.no2.4\n \nLinguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.2000,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of International Clinical Dental Research Organization","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5577/intdentres.2022.vol12.no2.4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
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Abstract
Aim: The aim of this study was to compare the effects of powder, mat, and sheet forms of graphene and polyvinylpyrrolidone (PVP) on the bending strength of polymethyl methacrylate (PMMA).
Methodology: A total of 75 PMMA samples (64 x 13 x 3 mm) were obtained and separated into five groups of 15, one of which was the control group. No strengthening material was added to the control group samples. In the PMMA+Polyvinylpyrrolidone powder (PVPP) (Group B) and PMMA+Graphene powder (GP) groups (Group D), PVP (0.5%) and graphene (0.01%) powders, respectively were added to the PMMA. In the PMMA+Polyvinylpryrolidone fiber mat (PVPM) (Group C) and PMMA+Graphene sheet (GS) groups (Group E), a PVP mat and graphene sheet, respectively were placed in the center of a square PMMA resin mold. To measure the samples’ resistance to bending, the three-point bending test (ISO 1567) was applied. Fracture lines were examined under a scanning electron microscope (SEM), and bending strength was analyzed using one-way analysis of variance (ANOVA).
Results: A statistically significant difference was determined between the GS (118.5093 ± 11.94859 Mpa) and PVPP (105.5267 ± 6.80595 Mpa) groups. The mean bending resistance values were numerically higher in the PVPM (115.8487 ± 17.15440), GS (118.5093 ± 11.94859), and GP (116.2680 ± 16.03207) groups compared to the control group (108.2407 ± 24.23104). The graphene sheets and PVP mats showed higher resistance to bending than the powder form of either material.
Conclusion: In clinical dental prosthesis use, PVP mats and graphene sheets are preferable with respect to both PMMA strengthening and color.
How to cite this article:
Mutluay Ünal S. A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA. Int Dent Res 2022;12(2):62-9. https://doi.org/10.5577/intdentres.2022.vol12.no2.4
Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.