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dc.contributor.authorTanomaru-Filho, M. [UNESP]
dc.contributor.authorSilveira, G. F. [UNESP]
dc.contributor.authorReis, José Mauricio dos Santos Nunes [UNESP]
dc.contributor.authorBonetti-Filho, I. [UNESP]
dc.contributor.authorGuerreiro-Tanomaru, J. M. [UNESP]
dc.date.accessioned2014-05-20T13:47:02Z
dc.date.available2014-05-20T13:47:02Z
dc.date.issued2011-11-01
dc.identifierhttp://dx.doi.org/10.1111/j.1365-2591.2011.01910.x
dc.identifier.citationInternational Endodontic Journal. Malden: Wiley-blackwell, v. 44, n. 11, p. 1019-1023, 2011.
dc.identifier.issn0143-2885
dc.identifier.urihttp://hdl.handle.net/11449/16693
dc.description.abstractTanomaru-Filho M, Silveira GF, Reis JMSN, Bonetti-Filho I, Guerreiro-Tanomaru JM. Effect of compression load and temperature on thermomechanical tests for gutta-percha and Resilon (R). International Endodontic Journal, 44, 1019-1023, 2011.Aim To analyse a method used to evaluate the thermomechanical properties of gutta-percha and Resilon at different temperatures and compression loads.Methodology Two hundred and seventy specimens measuring 10 mm in diameter and 1.5 mm in height were made from the following materials: conventional gutta-percha (GCO). thermoplastic gutta-percha (GTP) and Resilon (R) cones (RE). After 24 h, the specimens were placed in water at 50 degrees C. 60 degrees C or 70 degrees C for 60 s. After that, specimens were placed between two glass slabs, and loads weighing 1.0, 3.0 or 5.0 kg were applied. Images of the specimens were digitized before and after the test and analysed using imaging software to determine their initial and final areas. The thermomechanical property of each material was determined by the difference between the initial and final areas of the specimens. Data were subjected to ANOVA and SNK tests at 5% significance. To verify a possible correlation between the results of the materials, linear regression coefficients (r) were calculated.Results Data showed higher flow area values for RE under all compression loads at 70 degrees C and under the 5.0 kg load at 60 degrees C (P < 0.05). Regarding gutta-percha, GTP showed higher flow under loads weighing 3.0 and 5.0 kg. at 60 and 70 degrees C (P < 0.05). GCO presented higher flow at 70 degrees C with a load of 5.0 kg. Regression analyses showed a poor linear correlation amongst the results of the materials under the different experimental conditions.Conclusion Gutta-percha and Resilon (R) cones require different compression loads and temperatures for evaluation of their thermomechanical properties. For all materials, the greatest flow occurred at 70 degrees C under a load of 5.0 kg: therefore. these parameters may be adopted when evaluating endodontic tilling materials.en
dc.format.extent1019-1023
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofInternational Endodontic Journal
dc.sourceWeb of Science
dc.subjectdental materialsen
dc.subjectendodontic filling materialsen
dc.subjectgutta-perchaen
dc.subjectResilon (R)en
dc.titleEffect of compression load and temperature on thermomechanical tests for gutta-percha and Resilon (R)en
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationSão Paulo State Univ UNESP, Araraquara Dent Sch, Dept Restorat Dent, Araraquara, Brazil
dc.description.affiliationSão Paulo State Univ UNESP, Araraquara Dent Sch, Dept Oral Rehabil, Araraquara, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Araraquara Dent Sch, Dept Restorat Dent, Araraquara, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Araraquara Dent Sch, Dept Oral Rehabil, Araraquara, Brazil
dc.identifier.doi10.1111/j.1365-2591.2011.01910.x
dc.identifier.wosWOS:000296263400006
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt
unesp.author.orcid0000-0002-2574-4706[1]
unesp.author.orcid0000-0003-0446-2037[5]
dc.relation.ispartofjcr3.015
dc.relation.ispartofsjr1,791
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