Please use this identifier to cite or link to this item: http://guaiaca.ufpel.edu.br:8080/handle/123456789/784
Full metadata record
DC FieldValueLanguage
dc.contributor.authorFaria e Silva, André Luis-
dc.contributor.authorPiva, Evandro-
dc.contributor.authorMoraes, Rafael Ratto de-
dc.date.accessioned2013-11-18T13:58:56Z-
dc.date.available2013-11-18T13:58:56Z-
dc.date.issued2010-
dc.identifier.citationFaria-e-Silva, A.L. ; MORAES, Rafael Ratto de ; Piva, Evandro . Time-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins. European Journal of Dentistry, v. 4, p. 150-155, 2010.pt_BR
dc.identifier.issn1305-7456-
dc.identifier.urihttp://hdl.handle.net/123456789/784-
dc.description.abstractObjectives: This study evaluated the effect of refrigeration at 4oC and post-refrigeration times (immediate, 5, 10, 15, or 20 min) on the viscosity and conversion kinetics of adhesive bonding resins. Methods: Scotchbond Dual-Cure (3M ESPE) and Clearfil SE Bond (Kuraray) were tested. Control samples were kept at 25oC for 24 h. At each post-refrigeration time, the temperature was checked with a K-type thermocouple. Viscosity measurements as a function of temperature were performed using a cone-plate viscometer. Real-time polymerization was monitored by infrared spectroscopy. Degree of conversion (DC) was calculated for each second during polymerization, and the rate of polymerization analyzed. Data were separately submitted to two-way ANOVA and Tukey’s test (P<.05). Results: Clearfil presented faster increase in temperature after exposure to room temperature than Scotchbond. A continuous decrease in viscosity (Pa.s) was observed for both Scotchbond (0.49, 0.34, 0.30, 0.26, 0.23, 0.23) and Clearfil (0.38, 0.37, 0.34, 0.25, 0.24, 0.22). For Scotchbond, higher final DC was detected for the control (62.7%) compared with the immediate (53.3%) and 5 min (54.7%) groups. For Clearfil, the control sample (81.4%) showed higher DC than all refrigerated groups (68.8– 69.5%). Clearfil always showed significantly higher DC than Scotchbond. Conclusions: Refrigeration presented a significant time- and material-dependent effect on the viscosity and polymerization kinetics of the bonding resins. Under clinical conditions, adhesive agents should be removed from the refrigerator at least 20 min before being used. (Eur J Dent 2010;4:150-155)pt_BR
dc.description.provenanceSubmitted by Darlene Silveira (souzasilveirad@yahoo.com.br) on 2013-11-18T13:46:38Z No. of bitstreams: 1 Time-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf: 627524 bytes, checksum: a63454877dd7ed0aef6798a3b3bd6ae5 (MD5)en
dc.description.provenanceApproved for entry into archive by Fabiano Malheiro(fabianomalheiro22@hotmail.com) on 2013-11-18T13:58:56Z (GMT) No. of bitstreams: 1 Time-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf: 627524 bytes, checksum: a63454877dd7ed0aef6798a3b3bd6ae5 (MD5)en
dc.description.provenanceMade available in DSpace on 2013-11-18T13:58:56Z (GMT). No. of bitstreams: 1 Time-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf: 627524 bytes, checksum: a63454877dd7ed0aef6798a3b3bd6ae5 (MD5) Previous issue date: 2010en
dc.language.isoen_USpt_BR
dc.publisherMedknow Publicationspt_BR
dc.relation.ispartofseriesv.4;-
dc.rightsEste documento segue a Licença Creative Commons-
dc.subjectBonding resinspt_BR
dc.subjectDegree of conversionpt_BR
dc.subjectPolymerization kineticspt_BR
dc.subjectRefrigerationpt_BR
dc.subjectViscositypt_BR
dc.titleTime-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resinspt_BR
dc.typeArticlept_BR
Appears in Collections:Departamento de Odontologia Restauradora: Artigos de periódicos



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.