Effect of heat polymerization conditions and microwave on the flexural strength of polymethyl methacrylate

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dc.contributor.authorOzkir S.E.
dc.contributor.authorYilmaz B.
dc.contributor.authorUnal S.M.
dc.contributor.authorCulhaoglu A.
dc.contributor.authorKurkcuoglu I.
dc.date.accessioned2020-06-25T15:18:04Z
dc.date.available2020-06-25T15:18:04Z
dc.date.issued2018
dc.departmentKırıkkale Üniversitesi
dc.description.abstractObjective: The objective of this study is the effect of different heat polymerization conditions on the strength of polymethyl methacrylate (PMMA) resin base is unknown. Distinguishing one method that provides improved mechanical properties may be beneficial to the clinical success of complete and partial dentures and overdentures. The purpose of this study was to evaluate the effect of different polymerization methods on the flexural strength of a dental PMMA resin. Materials and Methods: Forty PMMA specimens (64 mm × 10 mm × 4 mm) were prepared with 4 different polymerization methods (n = 10); heat polymerization at 74°C for 9 h, at 100°C for 40 min, and with 620 kPa pressure at 100°C for 20 min. The remaining group of specimens was microwave polymerized at 180 W for 6 min. All specimens were thermocycled at 5°C and 55°C for 5000 times. Three-point flexure test was used to measure the flexural strength of specimens. One-way ANOVA and Tukey Honestly Significant Difference were applied to analyze the differences in flexural strengths (? = 0.05). Results: The flexural strength of heat-polymerized groups was similar. The flexural strength of microwave polymerized group was significantly different and lower than the other groups (P < 0.05). Conclusion: Polymerizing conventional heat-polymerizing PMMA resin with microwave energy resulted in a significant decrease in flexural strength. The results of this study suggest that clinicians may benefit from using heat polymerization when processing PMMA denture bases instead of microvawe polymerization when tested brand is used. © 2018 European Journal of Dentistry.en_US
dc.identifier.doi10.4103/ejd.ejd_199_17
dc.identifier.endpage119en_US
dc.identifier.issn13057456
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85044179588
dc.identifier.scopusqualityQ1
dc.identifier.startpage116en_US
dc.identifier.urihttps://doi.org/10.4103/ejd.ejd_199_17
dc.identifier.urihttps://hdl.handle.net/20.500.12587/2614
dc.identifier.volume12en_US
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMedknow Publicationsen_US
dc.relation.ispartofEuropean Journal of Dentistry
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectFlexural strengthen_US
dc.subjectMicrowaveen_US
dc.subjectPolymerizationen_US
dc.subjectPolymethyl methacrylateen_US
dc.titleEffect of heat polymerization conditions and microwave on the flexural strength of polymethyl methacrylateen_US
dc.typeArticle

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