Produção Nacional
Revisado por pares
Effect of compression load and temperature on thermomechanical tests for gutta-percha and Resilon®
2011; Wiley; Volume: 44; Issue: 11 Linguagem: Inglês
10.1111/j.1365-2591.2011.01910.x
ISSN1365-2591
AutoresMário Tanomaru‐Filho, Geraldine Faccio da Silveira, José Maurício dos Santos Nunes Reis, Idomeo Bonetti‐Filho, Juliane Maria Guerreiro–Tanomaru,
Tópico(s)Hydraulic Fracturing and Reservoir Analysis
ResumoInternational Endodontic JournalVolume 44, Issue 11 p. 1019-1023 Effect of compression load and temperature on thermomechanical tests for gutta-percha and Resilon® M. Tanomaru-Filho, M. Tanomaru-Filho Department of Restorative DentistrySearch for more papers by this authorG. F. Silveira, G. F. Silveira Department of Restorative DentistrySearch for more papers by this authorJ. M. S. N. Reis, J. M. S. N. Reis Department of Oral Rehabilitation, Araraquara Dental School, São Paulo State University – UNESP, Araraquara, BrazilSearch for more papers by this authorI. Bonetti-Filho, I. Bonetti-Filho Department of Restorative DentistrySearch for more papers by this authorJ. M. Guerreiro-Tanomaru, J. M. Guerreiro-Tanomaru Department of Restorative DentistrySearch for more papers by this author M. Tanomaru-Filho, M. Tanomaru-Filho Department of Restorative DentistrySearch for more papers by this authorG. F. Silveira, G. F. Silveira Department of Restorative DentistrySearch for more papers by this authorJ. M. S. N. Reis, J. M. S. N. Reis Department of Oral Rehabilitation, Araraquara Dental School, São Paulo State University – UNESP, Araraquara, BrazilSearch for more papers by this authorI. Bonetti-Filho, I. Bonetti-Filho Department of Restorative DentistrySearch for more papers by this authorJ. M. Guerreiro-Tanomaru, J. M. Guerreiro-Tanomaru Department of Restorative DentistrySearch for more papers by this author First published: 26 July 2011 https://doi.org/10.1111/j.1365-2591.2011.01910.xCitations: 5 Mário Tanomaru-Filho, Rua Humaitá, 1901, apto. 182, Centro, 14801-385 Araraquara, SP, Brasil. (Tel.: +55-16-3301-6390; fax: +55-16-3301-6392; e-mail: [email protected]). Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Tanomaru-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®. 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® cones (RE). After 24 h, the specimens were placed in water at 50 °C, 60 °C or 70 °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 °C and under the 5.0 kg load at 60 °C (P < 0.05). Regarding gutta-percha, GTP showed higher flow under loads weighing 3.0 and 5.0 kg, at 60 and 70 °C (P < 0.05). GCO presented higher flow at 70 °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® cones require different compression loads and temperatures for evaluation of their thermomechanical properties. For all materials, the greatest flow occurred at 70 °C under a load of 5.0 kg; therefore, these parameters may be adopted when evaluating endodontic filling materials. References Bowman C, Baumgartner JC (2002) Gutta-percha obturation of lateral grooves and depressions. 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