Effect of thermal cycling on the flexural strength and hardness of new-generation denture base materials

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dc.authoridMustafa Borga Dönmez / /0000-0002-3094-7487en_US
dc.authorscopusidMustafa Borga Dönmez / 57202022054
dc.authorscopusidMustafa Borga Dönmez / 57202022054
dc.authorwosidMustafa Borga Dönmez / AGY-6155-2022en_US
dc.contributor.authorCakmak, Gulce
dc.contributor.authorDonmez, Mustafa Borga
dc.contributor.authorAkay, Canan
dc.contributor.authorAbou-Ayash, Samir
dc.contributor.authorSchimmel, Martin
dc.contributor.authorYilmaz, Burak
dc.date.accessioned2022-12-02T07:41:49Z
dc.date.available2022-12-02T07:41:49Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Diş Hekimliği Fakültesi, Klinik Bilimler Bölümüen_US
dc.description.abstractPurpose To evaluate the flexural strength and Vickers microhardness of different CAD-CAM denture base materials. Materials and methods Sixty rectangular specimens (64 x 10 x 3.3 +/- 0.2 mm) were fabricated from 3 different denture base materials (G-CAM, Graphene-reinforced polymethylmethacrylate, GC), Ivotion Base (Prepolymerized polymethylmethacrylate, IV), and Denturetec (3D-printed resin, DT) either by using additive (DT) or subtractive manufacturing (IV and GC). Specimens of each group were divided into 2 subgroups (thermal cycled or nonthermal cycled, n = 10/group). Nonthermal cycled specimens were stored in distilled water at 37 degrees C for 24 hours and subjected to 3-point flexural strength test with a universal testing machine. Thermal cycled specimens were initially evaluated for Vickers microhardness and subjected to thermal cycling (10,000 cycles at 5-55 degrees C). Vickers microhardness values were remeasured, and the specimens were subjected to 3-point flexural strength test. Data were analyzed by using 2-way analysis of variance and Bonferroni-corrected Tukey honestly significant difference tests (alpha = 0.05). Results Material type and condition significantly affected flexural strength (p <= 0.004), whereas their interaction was nonsignificant (p = 0.778). Overall flexural strength of the materials in decreasing order was GC, IV, and DT (p < 0.001), regardless of the condition. Material had a higher effect on flexural strength (eta p(2) = 0.731) than thermal cycling (eta p(2) = 0.142). The effect of the interaction between the material type and thermal cycling on Vickers microhardness was significant (p < 0.001). GC had the highest microhardness before and after thermal cycling (p < 0.001). IV had higher microhardness than DT before thermal cycling (p < 0.001). However, DT and IV showed similar microhardness after thermal cycling (p = 0.665). Thermal cycling decreased the microhardness of GC and IV (p <= 0.022), whereas its effect on DT's microhardness was nonsignificant (p = 0.538). Material type had the highest effect on microhardness (eta p(2) = 0.864) followed by the interaction between the main factors (eta p(2) = 0.258). Conclusions Graphene-reinforced polymethylmethacrylate had the highest flexural strength and Vickers microhardness values, regardless of thermal cycling. Thermal cycling reduced the flexural strength of all resins. Thermal cycling reduced the microhardness of milled polymethylmethacrylate, but not that of 3D-printed resin.en_US
dc.identifier.citationÇakmak, G., Donmez, M. B., Akay, C., Abou‐Ayash, S., Schimmel, M., & Yilmaz, B. (2022). Effect of thermal cycling on the flexural strength and hardness of new‐generation denture base materials. Journal of prosthodontics.en_US
dc.identifier.doi10.1111/jopr.13615en_US
dc.identifier.issn1059-941Xen_US
dc.identifier.scopus2-s2.0-85141416963en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://dx.doi.org/10.1111/jopr.13615
dc.identifier.urihttps://hdl.handle.net/20.500.12713/3403
dc.identifier.wosWOS:000878744200001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorDönmez, Mustafa Borga
dc.language.isoenen_US
dc.publisherWILEYen_US
dc.relation.ispartofJOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAdditive Manufacturingen_US
dc.subjectDenture Baseen_US
dc.subjectFlexural Strengthen_US
dc.subjectMicrohardnessen_US
dc.subjectThermal Cyclingen_US
dc.titleEffect of thermal cycling on the flexural strength and hardness of new-generation denture base materialsen_US
dc.typeArticleen_US

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