Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina
Ano de defesa: | 2012 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Odontologia
|
Departamento: |
Faculdade de Odontologia
|
País: |
BR
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede2.pucrs.br/tede2/handle/tede/1165 |
Resumo: | This study evaluated different loads during the cementation on the microtensile bond strength of conventional and self-adhesive resin cement. Fortytwo extracted caries-free molars were selected. Flat coronal dentin surfaces were exposed until the removal of enamel. The selected teeth were embedded in autopolymerized acrylic resin. Composite resin discs (Filtek Z 350 XT, 3M ESPE) were made according to the manufacturer?s instructions. Luting procedures with Rely X ARC - Group 1 (3M ESPE) were made with etched with 37% phosphoric acid gel, rinsed with water and the excess dentin moisture was removed and were applied two consecutive coats of the adhesive (Adper Single Bond 2) and light cured with halogen light (3M ESPE). Immediately the cement was manipulated according to the manufacturer s instructions and the composite discs were placed under 10N, 30N or 60N static load for 2 minutes. Specimens were light cured for a total of 160 seconds. Luting procedures with Rely X U100 (3M ESPE) - self-adhesive resin cement - Group 2 were made with moist dentin, the cement was manipulated according to the manufacturer s instructions, following the same protocol of the luting procedures of conventional resin cement. The bonded specimens were stored in water at 37?C for 24 hours. The restorations were embedded in autopolymerized acrylic resin and then longitudinally sectioned in the x and y directions perpendicular to the bonded interface to produce rectangular bonded sticks. Specimens (n=15) were divided according to cement and the load. The microtensile bond strength was conducted on a mechanical testing machine EMIC DL-2000. In order to evaluate the hybrid layer, two teeth of each group were cut perpendicular to the bonding interface, exposing the middle of the teeth. The surfaces were flatted and followed by polished and a dehydration process. Specimens were sputter coated with gold and examined with a scanning electron microscope (SEM) at a x1000 to a x4000 magnification. Data were subjected to Analysis of Variance and Tukey s test (p<0.05). The load of 30 N showed the best mean of the microtensile bond strength of the both groups (17,27 ? 5,33 MPa to group 1 and 15,33 ? 2,75 MPa to group 2). The load of 10 N of group 2 showed intermediary values (9,47 ? 4,07 MPa) followed by load of 10N (9,36 ? 5,08 MPa) and 60N of group 1 (7,84 ? 2,49 MPa). The load of 60N of group 2 resulted in the lowest values (7,34 ? 2,64 MPa). The mode of failure was determined using SEM and the mixed failure werer predominant in all groups. The results suggest that different load during the luting procedures can interfere on the bond strength of resin cements. |
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Oshima, Hugo Mitsuo SilvaCPF:60348801149http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4760776E1CPF:00552026085http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4296482P6Paludo, Tamara2015-04-14T13:30:10Z2012-05-032012-03-26PALUDO, Tamara. Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina. 2012. 77 f. Disserta??o (Mestrado em Odontologia) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2012.http://tede2.pucrs.br/tede2/handle/tede/1165This study evaluated different loads during the cementation on the microtensile bond strength of conventional and self-adhesive resin cement. Fortytwo extracted caries-free molars were selected. Flat coronal dentin surfaces were exposed until the removal of enamel. The selected teeth were embedded in autopolymerized acrylic resin. Composite resin discs (Filtek Z 350 XT, 3M ESPE) were made according to the manufacturer?s instructions. Luting procedures with Rely X ARC - Group 1 (3M ESPE) were made with etched with 37% phosphoric acid gel, rinsed with water and the excess dentin moisture was removed and were applied two consecutive coats of the adhesive (Adper Single Bond 2) and light cured with halogen light (3M ESPE). Immediately the cement was manipulated according to the manufacturer s instructions and the composite discs were placed under 10N, 30N or 60N static load for 2 minutes. Specimens were light cured for a total of 160 seconds. Luting procedures with Rely X U100 (3M ESPE) - self-adhesive resin cement - Group 2 were made with moist dentin, the cement was manipulated according to the manufacturer s instructions, following the same protocol of the luting procedures of conventional resin cement. The bonded specimens were stored in water at 37?C for 24 hours. The restorations were embedded in autopolymerized acrylic resin and then longitudinally sectioned in the x and y directions perpendicular to the bonded interface to produce rectangular bonded sticks. Specimens (n=15) were divided according to cement and the load. The microtensile bond strength was conducted on a mechanical testing machine EMIC DL-2000. In order to evaluate the hybrid layer, two teeth of each group were cut perpendicular to the bonding interface, exposing the middle of the teeth. The surfaces were flatted and followed by polished and a dehydration process. Specimens were sputter coated with gold and examined with a scanning electron microscope (SEM) at a x1000 to a x4000 magnification. Data were subjected to Analysis of Variance and Tukey s test (p<0.05). The load of 30 N showed the best mean of the microtensile bond strength of the both groups (17,27 ? 5,33 MPa to group 1 and 15,33 ? 2,75 MPa to group 2). The load of 10 N of group 2 showed intermediary values (9,47 ? 4,07 MPa) followed by load of 10N (9,36 ? 5,08 MPa) and 60N of group 1 (7,84 ? 2,49 MPa). The load of 60N of group 2 resulted in the lowest values (7,34 ? 2,64 MPa). The mode of failure was determined using SEM and the mixed failure werer predominant in all groups. The results suggest that different load during the luting procedures can interfere on the bond strength of resin cements.Este trabalho avaliou a influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimento resinoso convencional e autoadesivo. Para isso, foram selecionados 42 molares humanos h?gidos. Os dentes foram desgastados em politriz at? a remo??o de esmalte. Os dentes tiveram suas ra?zes embutidas em resina acr?lica autopolimeriz?vel. Foram confeccionadas pastilhas de resina composta (Filtek Z 350 XT, 3M ESPE), conforme as orienta??es do fabricante. Para cimenta??o com cimento resinoso convencional Rely X ARC (3M ESPE) Grupo 1 foi realizado condicionamento ?cido da superf?cie (?cido fosf?rico 37%), lavagem, secagem com algod?o, aplica??o de duas camadas de adesivo (Adper Single Bond 2) e fotoativa??o atrav?s de um fotopolimerizador de luz hal?gena, seguido da manipula??o e da aplica??o do cimento, conforme orienta??es do fabricante. J? a cimenta??o com o cimento resinoso autoadesivo RelyX U100 (3M ESPE) Grupo 2 foi feita em dentina ?mida, manipula??o e aplica??o do cimento de acordo com orienta??es do fabricante. Em ambos os grupos, o bloco de resina composta foi posicionado sobre o cimento com carga de 10 N, 30 N e 60 N pelo tempo de dois minutos e fotoativado pelo tempo de 160 segundos (3M ESPE). As amostras foram armazenadas por 24 horas em 100% de umidade a 37?C. As restaura??es foram inclu?das com resina acr?lica autopolimeriz?vel e submetidas a cortes seriados, obtendo-se o formato de prismas. Os esp?cimes (n=15 para cada carga) ficaram divididos conforme o cimento e a carga utilizados. Ap?s, foram submetidos ao teste de resist?ncia de uni?o a microtra??o na m?quina de ensaios universal EMIC DL-2000. Al?m disso, dois conjuntos de cada grupo foram seccionados no sentido m?sio-distal, com um disco diamantado de dupla face. As superf?cies foram polidas com lixas de carbeto de sil?cio, seguido de polimento com pastas diamantadas. As amostras foram desmineralizadas, desproteinizadas, secadas, metalizadas e observadas em microsc?pio eletr?nico de varredura em aumento de 1.000 a 4.000 vezes. Os resultados foram submetidos ? An?lise de Vari?ncia e ao teste de Tukey HSD. A carga de 30N apresentou o maior valor de resist?ncia de uni?o em ambos os grupos, sendo 17,27 ? 5.33 MPa no Grupo 2 (dois) e 15,33 ? 2.75 MPa no Grupo 1 (um). J? a carga de 10 N apresentou valores intermedi?ri?rios de resist?ncia de uni?o, sendo (9,47 ? 4.07 MPa) para o Grupo 2 (dois) e (9,36 ? 5.08) para o Grupo 1 (um). A carga de 60 N foi a que apresentou menores valores de resist?ncia de uni?o (9,47 ? 2.64 MPa) para o Grupo 2 (dois) e (9,36 ? 2.49) para o Grupo 1 (um). Houve diferen?a estat?stica entre a carga de 30 N do Grupo 2 (dois) e a carga de 60 N do Grupo 1 (um) e tamb?m entre a carga de 30 N do Grupo 2(dois) com a carga de 60 N do Grupo 2 (dois). O tipo de fratura foi analisado atrav?s de imagens obtidas em MEV e a falha do tipo mista foi predominante em ambos os grupos e cargas. Os resultados sugerem que diferentes cargas de cimenta??o podem interferir na resist?ncia de uni?o do cimento resinoso RelyX ARC e Rely X U100.Made available in DSpace on 2015-04-14T13:30:10Z (GMT). No. of bitstreams: 1 438178.pdf: 2149932 bytes, checksum: 72e349d1108a96e32586f332a6db74c4 (MD5) Previous issue date: 2012-03-26application/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/8099/438178.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em OdontologiaPUCRSBRFaculdade de OdontologiaODONTOLOGIAMATERIAIS DENT?RIOSCIMENTA??O (ODONTOLOGIA)RESIST?NCIA DOS MATERIAISRESINAS COMPOSTASCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIAInflu?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentinainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-80965548187336651645006004673435736271820140info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAIL438178.pdf.jpg438178.pdf.jpgimage/jpeg3465http://tede2.pucrs.br/tede2/bitstream/tede/1165/3/438178.pdf.jpgb72bff1adc4239aef09a70b6e76e8324MD53TEXT438178.pdf.txt438178.pdf.txttext/plain103374http://tede2.pucrs.br/tede2/bitstream/tede/1165/2/438178.pdf.txtac9f243bec29a8bd9c25fc343e3e1bfbMD52ORIGINAL438178.pdfapplication/pdf2149932http://tede2.pucrs.br/tede2/bitstream/tede/1165/1/438178.pdf72e349d1108a96e32586f332a6db74c4MD51tede/11652015-04-30 08:15:31.443oai:tede2.pucrs.br:tede/1165Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2015-04-30T11:15:31Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
title |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
spellingShingle |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina Paludo, Tamara ODONTOLOGIA MATERIAIS DENT?RIOS CIMENTA??O (ODONTOLOGIA) RESIST?NCIA DOS MATERIAIS RESINAS COMPOSTAS CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
title_short |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
title_full |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
title_fullStr |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
title_full_unstemmed |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
title_sort |
Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina |
author |
Paludo, Tamara |
author_facet |
Paludo, Tamara |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Oshima, Hugo Mitsuo Silva |
dc.contributor.advisor1ID.fl_str_mv |
CPF:60348801149 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4760776E1 |
dc.contributor.authorID.fl_str_mv |
CPF:00552026085 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4296482P6 |
dc.contributor.author.fl_str_mv |
Paludo, Tamara |
contributor_str_mv |
Oshima, Hugo Mitsuo Silva |
dc.subject.por.fl_str_mv |
ODONTOLOGIA MATERIAIS DENT?RIOS CIMENTA??O (ODONTOLOGIA) RESIST?NCIA DOS MATERIAIS RESINAS COMPOSTAS |
topic |
ODONTOLOGIA MATERIAIS DENT?RIOS CIMENTA??O (ODONTOLOGIA) RESIST?NCIA DOS MATERIAIS RESINAS COMPOSTAS CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
description |
This study evaluated different loads during the cementation on the microtensile bond strength of conventional and self-adhesive resin cement. Fortytwo extracted caries-free molars were selected. Flat coronal dentin surfaces were exposed until the removal of enamel. The selected teeth were embedded in autopolymerized acrylic resin. Composite resin discs (Filtek Z 350 XT, 3M ESPE) were made according to the manufacturer?s instructions. Luting procedures with Rely X ARC - Group 1 (3M ESPE) were made with etched with 37% phosphoric acid gel, rinsed with water and the excess dentin moisture was removed and were applied two consecutive coats of the adhesive (Adper Single Bond 2) and light cured with halogen light (3M ESPE). Immediately the cement was manipulated according to the manufacturer s instructions and the composite discs were placed under 10N, 30N or 60N static load for 2 minutes. Specimens were light cured for a total of 160 seconds. Luting procedures with Rely X U100 (3M ESPE) - self-adhesive resin cement - Group 2 were made with moist dentin, the cement was manipulated according to the manufacturer s instructions, following the same protocol of the luting procedures of conventional resin cement. The bonded specimens were stored in water at 37?C for 24 hours. The restorations were embedded in autopolymerized acrylic resin and then longitudinally sectioned in the x and y directions perpendicular to the bonded interface to produce rectangular bonded sticks. Specimens (n=15) were divided according to cement and the load. The microtensile bond strength was conducted on a mechanical testing machine EMIC DL-2000. In order to evaluate the hybrid layer, two teeth of each group were cut perpendicular to the bonding interface, exposing the middle of the teeth. The surfaces were flatted and followed by polished and a dehydration process. Specimens were sputter coated with gold and examined with a scanning electron microscope (SEM) at a x1000 to a x4000 magnification. Data were subjected to Analysis of Variance and Tukey s test (p<0.05). The load of 30 N showed the best mean of the microtensile bond strength of the both groups (17,27 ? 5,33 MPa to group 1 and 15,33 ? 2,75 MPa to group 2). The load of 10 N of group 2 showed intermediary values (9,47 ? 4,07 MPa) followed by load of 10N (9,36 ? 5,08 MPa) and 60N of group 1 (7,84 ? 2,49 MPa). The load of 60N of group 2 resulted in the lowest values (7,34 ? 2,64 MPa). The mode of failure was determined using SEM and the mixed failure werer predominant in all groups. The results suggest that different load during the luting procedures can interfere on the bond strength of resin cements. |
publishDate |
2012 |
dc.date.available.fl_str_mv |
2012-05-03 |
dc.date.issued.fl_str_mv |
2012-03-26 |
dc.date.accessioned.fl_str_mv |
2015-04-14T13:30:10Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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dc.identifier.citation.fl_str_mv |
PALUDO, Tamara. Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina. 2012. 77 f. Disserta??o (Mestrado em Odontologia) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2012. |
dc.identifier.uri.fl_str_mv |
http://tede2.pucrs.br/tede2/handle/tede/1165 |
identifier_str_mv |
PALUDO, Tamara. Influ?ncia de diferentes cargas de cimenta??o na resist?ncia de uni?o de cimentos resinosos ? dentina. 2012. 77 f. Disserta??o (Mestrado em Odontologia) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2012. |
url |
http://tede2.pucrs.br/tede2/handle/tede/1165 |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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Programa de P?s-Gradua??o em Odontologia |
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PUCRS |
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BR |
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Faculdade de Odontologia |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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