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dc.contributor.author | Cekic Nagas, Isil | es |
dc.contributor.author | Egilmez, Ferhan | es |
dc.contributor.author | Ergün, Gülfem | es |
dc.contributor.author | Kaya, Bekir-Murat | es |
dc.date.accessioned | 2014-05-29T07:05:03Z | |
dc.date.available | 2014-05-29T07:05:03Z | |
dc.date.issued | 2013 | es |
dc.identifier.citation | Cekic Nagas, Isil ; Egilmez, Ferhan ; Ergün, Gülfem ; Kaya, Bekir-Murat. Light transmittance of zirconia as a function of thickness and microhardness of resin cements under different thicknesses of zirconia. En: Medicina oral, patología oral y cirugía bucal. Ed inglesa, 2013, Vol. 18, No. 2: 212-218 | es |
dc.identifier.uri | http://hdl.handle.net/10550/35602 | |
dc.description.abstract | Objective: The objective of this study was to compare microhardness of resin cements under different thicknesses of zirconia and the light transmittance of zirconia as a function of thickness. Study design: A total of 126 disc-shaped specimens (2 mm in height and 5 mm in diameter) were prepared from dual-cured resin cements (RelyX Unicem, Panavia F and Clearfil SA cement). Photoactivation was performed by using quartz tungsten halogen and light emitting diode light curing units under different thicknesses of zirconia. Then the specimens (n=7/per group) were stored in dry conditions in total dark at 37°C for 24 h. The Vicker's hardness test was performed on the resin cement layer with a microhardness tester. Statistical significance was determined using multifactorial analysis of variance (ANOVA) (alpha=.05). Light transmittance of different thick - nesses of zirconia (0.3, 0.5 and 0.8 mm) was measured using a hand-held radiometer (Demetron, Kerr). Data were analyzed using one-way ANOVA test (alpha=.05). Results: ANOVA revealed that resin cement and light curing unit had significant effects on microhardness (p < 0.001). Additionally, greater zirconia thickness resulted in lower transmittance. There was no correlation between the amount of light transmitted and microhardness of dual-cured resin cements (r = 0.073, p = 0.295). Conclusion: Although different zirconia thicknesses might result in insufficient light transmission, dual-cured resin cements under zirconia restorations could have adequate microhardness | en_US |
dc.subject | Odontología | es |
dc.subject | Ciencias de la salud | es |
dc.title | Light transmittance of zirconia as a function of thickness and microhardness of resin cements under different thicknesses of zirconia | es |
dc.type | journal article | es_ES |
dc.subject.unesco | UNESCO::CIENCIAS MÉDICAS | es |
dc.type.hasVersion | VoR | es_ES |