Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFPel - Guaiaca |
Texto Completo: | http://repositorio.ufpel.edu.br/handle/ri/784 |
Resumo: | Objectives: 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) |
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Faria e Silva, André LuisPiva, EvandroMoraes, Rafael Ratto de2013-11-18T13:58:56Z2013-11-18T13:58:56Z2010Faria-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, 2010.1305-7456http://repositorio.ufpel.edu.br/handle/ri/784Objectives: 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)Medknow Publicationsv.4;Bonding resinsDegree of conversionPolymerization kineticsRefrigerationViscosityTime-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resinsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFPel - Guaiacainstname:Universidade Federal de Pelotas (UFPEL)instacron:UFPELORIGINALTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdfTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdfapplication/pdf627524http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/784/1/Time-Dependent%20Effect%20of%20Refrigeration%20on%20Viscosity%20and%20Conversion%20Kinetics%20of%20Dental%20Adhesive%20Resins.pdfa63454877dd7ed0aef6798a3b3bd6ae5MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-867http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/784/2/license.txtfbd6c74465857056e3ca572d7586661bMD52open accessTEXTTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf.txtTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf.txtExtracted Texttext/plain23396http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/784/3/Time-Dependent%20Effect%20of%20Refrigeration%20on%20Viscosity%20and%20Conversion%20Kinetics%20of%20Dental%20Adhesive%20Resins.pdf.txt7ae4903d69806b83c1ed1b44b23a88afMD53open accessTHUMBNAILTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf.jpgTime-Dependent Effect of Refrigeration on Viscosity and Conversion Kinetics of Dental Adhesive Resins.pdf.jpgGenerated Thumbnailimage/jpeg1676http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/784/4/Time-Dependent%20Effect%20of%20Refrigeration%20on%20Viscosity%20and%20Conversion%20Kinetics%20of%20Dental%20Adhesive%20Resins.pdf.jpg29bb267f08206878a618cd5c4bbae7a9MD54open access123456789/7842020-07-09 08:49:04.501open accessoai:guaiaca.ufpel.edu.br:123456789/784VG9kb3Mgb3MgaXRlbnMgZGVzc2EgY29tdW5pZGFkZSBzZWd1ZW0gYSBsaWNlbsOnYSBDcmVhdGl2ZSBDb21tb25zLg==Repositório InstitucionalPUBhttp://repositorio.ufpel.edu.br/oai/requestrippel@ufpel.edu.br || repositorio@ufpel.edu.br || aline.batista@ufpel.edu.bropendoar:2020-07-09T11:49:04Repositório Institucional da UFPel - Guaiaca - Universidade Federal de Pelotas (UFPEL)false |
dc.title.pt_BR.fl_str_mv |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
title |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
spellingShingle |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins Faria e Silva, André Luis Bonding resins Degree of conversion Polymerization kinetics Refrigeration Viscosity |
title_short |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
title_full |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
title_fullStr |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
title_full_unstemmed |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
title_sort |
Time-dependent effect of refrigeration on viscosity and conversion kinetics of dental adhesive resins |
author |
Faria e Silva, André Luis |
author_facet |
Faria e Silva, André Luis Piva, Evandro Moraes, Rafael Ratto de |
author_role |
author |
author2 |
Piva, Evandro Moraes, Rafael Ratto de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Faria e Silva, André Luis Piva, Evandro Moraes, Rafael Ratto de |
dc.subject.por.fl_str_mv |
Bonding resins Degree of conversion Polymerization kinetics Refrigeration Viscosity |
topic |
Bonding resins Degree of conversion Polymerization kinetics Refrigeration Viscosity |
description |
Objectives: 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) |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010 |
dc.date.accessioned.fl_str_mv |
2013-11-18T13:58:56Z |
dc.date.available.fl_str_mv |
2013-11-18T13:58:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Faria-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. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufpel.edu.br/handle/ri/784 |
dc.identifier.issn.none.fl_str_mv |
1305-7456 |
identifier_str_mv |
Faria-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. 1305-7456 |
url |
http://repositorio.ufpel.edu.br/handle/ri/784 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.none.fl_str_mv |
v.4; |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Medknow Publications |
publisher.none.fl_str_mv |
Medknow Publications |
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Universidade Federal de Pelotas (UFPEL) |
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UFPEL |
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UFPEL |
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Repositório Institucional da UFPel - Guaiaca |
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