Microhardness of glass carbomer and high-viscous glass Ionomer cement in different thickness and thermo-light curing durations after thermocycling aging

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dc.authoridSIRIN KARAARSLAN, EMINE/0000-0002-6298-2463
dc.authoridBULDUR, Mehmet/0000-0001-9103-0069
dc.contributor.authorBuldur, Mehmet
dc.contributor.authorKaraarslan, Emine Sirin
dc.date.accessioned2025-01-27T20:55:47Z
dc.date.available2025-01-27T20:55:47Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractBackground: The objective of our study was to compare the upper and lower surface microhardness and surface changes of Glass Carbomer Cement (GCP) and EQUIA Forte (EF) in different thickness after thermo-light curing durations and aging. Methods: A total of 504 samples (5 mm-diameter) were prepared by using GCP-252 (GCP Dental, and Vianen, Netherlands) and EF-252 (EQUIA Forte, GC, Tokyo, Japan). Three different thickness samples (2, 4, and 6 mm) were prepared with 84 samples in each subgroup. The samples were prepared by three curing procedures (Non-exposed, 60s, 90s). Their varnishes were applied to the upper surfaces of half of each subgroup (n = 7). The upper microhardness measurements were evaluated before and after aging. To compare the effect of different thicknesses, the bottom surfaces of the samples were evaluated before aging in terms of microhardness measurements. Also, the upper surfaces were analyzed in the SEM before and after aging. Results: The upper surface values of all the samples were higher than the bottom values (p < 0.05). There were no significant differences between the varnished and non-varnished samples in both materials (p > 0.05). Although this increase was not significant in some groups, temperature variations increased the surface microhardness values of both materials except for the non-exposed-varnished EF samples. The highest microhardnesses values were recorded in the non-exposed-varnished EF (125.6 +/- 6.79) and unvarnished GCP (88.1 +/- 7.59) samples which were thermo-light cured for 90 s before aging. The bottom hardness values were affected by thickness variations in both GCP and EF materials (p < 0.05). The sample deformations and microcracks after aging were greater than before in all the materials. Thermo-light curing in 90 s to the samples reduced the cracks in both the materials before and after aging. Conclusions: Thermal aging adversely affected the microhardness of the materials, which is important for clinical success. The thermo-light curing process improved the microhardness of the GCP group without varnish application. Varnish application increased the microhardness of the EF group without applying thermo-light curing. The microhardness of the bottom surfaces decreased with increasing thickness. The thermo-light curing did not increase the bottom surface microhardness of all the samples.
dc.description.sponsorshipTokat Gaziosmanpasa University Scientific Research Projects Governing Unit [2016/43]
dc.description.sponsorshipThis study was supported by 2016/43 number project by the Tokat Gaziosmanpasa University Scientific Research Projects Governing Unit with the used materials. The authors declare that they have no financial relationship with the organization that sponsored the research, and the funding body was not involved in study design, data collection, analysis and writing of the study.
dc.identifier.doi10.1186/s12903-019-0973-4
dc.identifier.issn1472-6831
dc.identifier.issue1
dc.identifier.pmid31801493
dc.identifier.scopus2-s2.0-85075969123
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1186/s12903-019-0973-4
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26176
dc.identifier.volume19
dc.identifier.wosWOS:000511597400004
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherBMC
dc.relation.ispartofBmc Oral Health
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectGlass carbomer cement
dc.subjectEquia forte
dc.subjectMicrohardness
dc.subjectThermocycling
dc.subjectSEM
dc.titleMicrohardness of glass carbomer and high-viscous glass Ionomer cement in different thickness and thermo-light curing durations after thermocycling aging
dc.typeArticle

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