Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular

Detalhes bibliográficos
Autor(a) principal: Pauletto, Guilherme
Data de Publicação: 2023
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
dARK ID: ark:/26339/0013000016ptj
Texto Completo: http://repositorio.ufsm.br/handle/1/27651
Resumo: This dissertation is composed of two studies. The first study aimed to compare the effect of sodium hypochlorite (NaOCl) and calcium hypochlorite [Ca(OCl)2], followers or not of the use of sodium thiosulfate (Na2S2O3), on the bond strength of a resin composite restoration to pulp chamber dentin. For this, the pulp chamber of fifty human molars were randomly distributed into 5 groups (n=10) according to the immersion protocol: 2.5% NaOCl; 2.5% NaOCl + 5% Na2S2O3; 2.5% Ca(OCl)2; 2.5% Ca(OCl)2 + 5% Na2S2O3; and 0.9% sodium chloride (NaCl), (control). Subsequently, the samples were restored with resin composite. Three sticks were obtained from the pulp chamber and subjected to the microtensile test. Scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDS) analyzes were obtained from the pulp chamber roof (n=8) for mineral quantification. As a result, compared to control, the 2.5% NaOCl group was associated with the lowest values of bond strength and the 2.5% Ca(OCl)2 group presented similar bond strength. The 5% Na2S2O3 was able to increase the bond strength after the use of 2.5% NaOCl, but not after 2.5% Ca(OCl)2. The group treated only with 2.5% Ca(OCl)2 had a higher Ca/P ratio on the dentin surface. The second study aimed to evaluate the bond strength in the different dentinal thirds of the post space and adaptation failures (gaps) at the cement/dentin interface, resulting from the interaction between a dual-curing resin cement and a substrate irrigated with different concentrations of NaOCl or Ca(OCl)2. For this, after intraradicular preparation for posts in 50 endodontically treated premolars, the specimens were divided into 5 groups (n=10) according to the irrigant: 0.9% NaCl (control); 2.5% NaOCl; 5.25% NaOCl; 2.5% Ca(OCl)2; and 5.25% Ca(OCl)2. After irrigation, the posts were cemented with a dual-curing resin cement. One slice from each third were submitted to the push-out test. A additional slice of the middle third was submitted to confocal images for analysis of adaptation failures (gaps). As a result, the group treated with 5.25% NaOCl showed lower bond strength values than the control group. Bond strength decreased from coronal to apical in the post space. The 5.25% NaOCl generated more cohesive failures compared to the control group and 2.5% Ca(OCl)2. The groups treated with NaOCl had the highest percentages of gaps in relation to the control. Regardless of concentration, Ca(OCl)2 had no influence on the bond strength, and on the occurrence of gaps. In general conclusion, in both studies, Ca(OCl)2 did not affect bond strength in adhesive procedures. In addition, it was not affected by Na2S2O3, increased the Ca/P ratio on the dentin surface and did not interfere with the presence of gaps in the post space.
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spelling Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicularInfluence of calcium hypochlorite on adhesion of resinous materials to the pulpar chamber and root canalResistência de uniãoHipoclorito de cálcioHipoclorito de sódioResina compostaCimento resinosoBond strengthCalcium hypochloriteSodium hypochloriteResin compositeResin cementCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIAThis dissertation is composed of two studies. The first study aimed to compare the effect of sodium hypochlorite (NaOCl) and calcium hypochlorite [Ca(OCl)2], followers or not of the use of sodium thiosulfate (Na2S2O3), on the bond strength of a resin composite restoration to pulp chamber dentin. For this, the pulp chamber of fifty human molars were randomly distributed into 5 groups (n=10) according to the immersion protocol: 2.5% NaOCl; 2.5% NaOCl + 5% Na2S2O3; 2.5% Ca(OCl)2; 2.5% Ca(OCl)2 + 5% Na2S2O3; and 0.9% sodium chloride (NaCl), (control). Subsequently, the samples were restored with resin composite. Three sticks were obtained from the pulp chamber and subjected to the microtensile test. Scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDS) analyzes were obtained from the pulp chamber roof (n=8) for mineral quantification. As a result, compared to control, the 2.5% NaOCl group was associated with the lowest values of bond strength and the 2.5% Ca(OCl)2 group presented similar bond strength. The 5% Na2S2O3 was able to increase the bond strength after the use of 2.5% NaOCl, but not after 2.5% Ca(OCl)2. The group treated only with 2.5% Ca(OCl)2 had a higher Ca/P ratio on the dentin surface. The second study aimed to evaluate the bond strength in the different dentinal thirds of the post space and adaptation failures (gaps) at the cement/dentin interface, resulting from the interaction between a dual-curing resin cement and a substrate irrigated with different concentrations of NaOCl or Ca(OCl)2. For this, after intraradicular preparation for posts in 50 endodontically treated premolars, the specimens were divided into 5 groups (n=10) according to the irrigant: 0.9% NaCl (control); 2.5% NaOCl; 5.25% NaOCl; 2.5% Ca(OCl)2; and 5.25% Ca(OCl)2. After irrigation, the posts were cemented with a dual-curing resin cement. One slice from each third were submitted to the push-out test. A additional slice of the middle third was submitted to confocal images for analysis of adaptation failures (gaps). As a result, the group treated with 5.25% NaOCl showed lower bond strength values than the control group. Bond strength decreased from coronal to apical in the post space. The 5.25% NaOCl generated more cohesive failures compared to the control group and 2.5% Ca(OCl)2. The groups treated with NaOCl had the highest percentages of gaps in relation to the control. Regardless of concentration, Ca(OCl)2 had no influence on the bond strength, and on the occurrence of gaps. In general conclusion, in both studies, Ca(OCl)2 did not affect bond strength in adhesive procedures. In addition, it was not affected by Na2S2O3, increased the Ca/P ratio on the dentin surface and did not interfere with the presence of gaps in the post space.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESA presente dissertação é composta por dois estudos. O objetivo do primeiro estudo foi comparar o efeito do hipoclorito de sódio (NaOCl) e do hipoclorito de cálcio [Ca(OCl)2], seguidos ou não do uso do tiossulfato de sódio (Na2S2O3), na resistência de união de uma restauração de resina composta à dentina da câmara pulpar. Para isso, a câmara pulpar de cinquenta molares humanos foram distribuídas aleatoriamente em 5 grupos (n=10) conforme o protocolo de imersão: NaOCl 2.5%; NaOCl 2.5% + Na2S2O3 5%; Ca(OCl)2 2.5%; Ca(OCl)2 2.5% + Na2S2O3 5%; e cloreto de sódio 0.9% (NaCl), (controle). Posteriormente as amostras foram restauradas com resina composta. Três palitos foram obtidos da câmara pulpar e submetidos ao teste de microtração. Análises em microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva (EDS) foram obtidas do teto da câmara pulpar (n=8) para quantificação mineral. Como resultados, comparado ao controle, o grupo NaOCl 2,5% foi associado aos menores valores de resistência de união e o grupo Ca(OCl)2 2,5% apresentou resistência de união semelhante. O Na2S2O3 5% foi capaz de aumentar a resistência de união após o uso de NaOCl 2,5%, mas não após o Ca(OCl)2 2,5%. O grupo tratado apenas com Ca(OCl)2 2,5% apresentou maior razão Ca/P na superfície dentinária. O segundo estudo teve como objetivo avaliar a resistência de união nos diferentes terços dentinários do espaço protético e falhas de adaptação (gaps) na interface cimento/dentina, resultantes da interação entre um cimento resinoso dual e um substrato irrigado com diferentes concentrações de NaOCl ou Ca(OCl)2. Para isso, após o preparo intrarradicular para pinos de fibra em 50 pré-molares tratados endodonticamente, os espécimes foram divididos em 5 grupos (n=10) de acordo com o protocolo de irrigação: NaCl 0,9% (controle); NaOCl 2,5%; NaOCl 5,25%; Ca(OCl)2 2,5%; e Ca(OCl)2 5,25%. Após irrigação, os pinos foram cimentados com um cimento resinoso dual. Três fatias, correspondentes aos terços, foram obtidas do espaço protético e submetidas ao teste de push-out. Uma fatia adicional do terço médio foi submetida a imagens confocais para análise de gaps. Como resultado, o grupo tratado com NaOCl 5,25% apresentou valores de resistência de união menores que o grupo controle. A resistência de união diminuiu de coronal para apical no espaço protético. O NaOCl 5,25% gerou mais falhas coesivas em comparação ao grupo controle e ao Ca(OCl)2 2,5%. Os grupos tratados com NaOCl apresentaram os maiores percentuais de gaps em relação ao controle. Independente da concentração, o Ca(OCl)2 não teve influência na resistência de união e na ocorrência de gaps. Como conclusão geral, nos dois estudos o Ca(OCl)2 não afetou a resistência de união em procedimentos adesivos. Além disso, não sofreu efeito do Na2S2O3, aumentou a razão Ca/P na superfície dentinária e não interferiu na presença de gaps no espaço protético.Universidade Federal de Santa MariaBrasilOdontologiaUFSMPrograma de Pós-Graduação em Ciências OdontológicasCentro de Ciências da SaúdeBier, Carlos Alexandre Souzahttp://lattes.cnpq.br/6734133387557316Pappen, Fernanda GeraldoRosa, Ricardo Abreu daPauletto, Guilherme2023-01-23T13:03:26Z2023-01-23T13:03:26Z2023-01-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://repositorio.ufsm.br/handle/1/27651ark:/26339/0013000016ptjporAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2023-01-23T13:03:26Zoai:repositorio.ufsm.br:1/27651Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2023-01-23T13:03:26Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
Influence of calcium hypochlorite on adhesion of resinous materials to the pulpar chamber and root canal
title Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
spellingShingle Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
Pauletto, Guilherme
Resistência de união
Hipoclorito de cálcio
Hipoclorito de sódio
Resina composta
Cimento resinoso
Bond strength
Calcium hypochlorite
Sodium hypochlorite
Resin composite
Resin cement
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
title_short Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
title_full Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
title_fullStr Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
title_full_unstemmed Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
title_sort Influência do hipoclorito de cálcio na adesão de materiais resinosos à câmara pulpar e ao canal radicular
author Pauletto, Guilherme
author_facet Pauletto, Guilherme
author_role author
dc.contributor.none.fl_str_mv Bier, Carlos Alexandre Souza
http://lattes.cnpq.br/6734133387557316
Pappen, Fernanda Geraldo
Rosa, Ricardo Abreu da
dc.contributor.author.fl_str_mv Pauletto, Guilherme
dc.subject.por.fl_str_mv Resistência de união
Hipoclorito de cálcio
Hipoclorito de sódio
Resina composta
Cimento resinoso
Bond strength
Calcium hypochlorite
Sodium hypochlorite
Resin composite
Resin cement
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
topic Resistência de união
Hipoclorito de cálcio
Hipoclorito de sódio
Resina composta
Cimento resinoso
Bond strength
Calcium hypochlorite
Sodium hypochlorite
Resin composite
Resin cement
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
description This dissertation is composed of two studies. The first study aimed to compare the effect of sodium hypochlorite (NaOCl) and calcium hypochlorite [Ca(OCl)2], followers or not of the use of sodium thiosulfate (Na2S2O3), on the bond strength of a resin composite restoration to pulp chamber dentin. For this, the pulp chamber of fifty human molars were randomly distributed into 5 groups (n=10) according to the immersion protocol: 2.5% NaOCl; 2.5% NaOCl + 5% Na2S2O3; 2.5% Ca(OCl)2; 2.5% Ca(OCl)2 + 5% Na2S2O3; and 0.9% sodium chloride (NaCl), (control). Subsequently, the samples were restored with resin composite. Three sticks were obtained from the pulp chamber and subjected to the microtensile test. Scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDS) analyzes were obtained from the pulp chamber roof (n=8) for mineral quantification. As a result, compared to control, the 2.5% NaOCl group was associated with the lowest values of bond strength and the 2.5% Ca(OCl)2 group presented similar bond strength. The 5% Na2S2O3 was able to increase the bond strength after the use of 2.5% NaOCl, but not after 2.5% Ca(OCl)2. The group treated only with 2.5% Ca(OCl)2 had a higher Ca/P ratio on the dentin surface. The second study aimed to evaluate the bond strength in the different dentinal thirds of the post space and adaptation failures (gaps) at the cement/dentin interface, resulting from the interaction between a dual-curing resin cement and a substrate irrigated with different concentrations of NaOCl or Ca(OCl)2. For this, after intraradicular preparation for posts in 50 endodontically treated premolars, the specimens were divided into 5 groups (n=10) according to the irrigant: 0.9% NaCl (control); 2.5% NaOCl; 5.25% NaOCl; 2.5% Ca(OCl)2; and 5.25% Ca(OCl)2. After irrigation, the posts were cemented with a dual-curing resin cement. One slice from each third were submitted to the push-out test. A additional slice of the middle third was submitted to confocal images for analysis of adaptation failures (gaps). As a result, the group treated with 5.25% NaOCl showed lower bond strength values than the control group. Bond strength decreased from coronal to apical in the post space. The 5.25% NaOCl generated more cohesive failures compared to the control group and 2.5% Ca(OCl)2. The groups treated with NaOCl had the highest percentages of gaps in relation to the control. Regardless of concentration, Ca(OCl)2 had no influence on the bond strength, and on the occurrence of gaps. In general conclusion, in both studies, Ca(OCl)2 did not affect bond strength in adhesive procedures. In addition, it was not affected by Na2S2O3, increased the Ca/P ratio on the dentin surface and did not interfere with the presence of gaps in the post space.
publishDate 2023
dc.date.none.fl_str_mv 2023-01-23T13:03:26Z
2023-01-23T13:03:26Z
2023-01-13
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/27651
dc.identifier.dark.fl_str_mv ark:/26339/0013000016ptj
url http://repositorio.ufsm.br/handle/1/27651
identifier_str_mv ark:/26339/0013000016ptj
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
Brasil
Odontologia
UFSM
Programa de Pós-Graduação em Ciências Odontológicas
Centro de Ciências da Saúde
publisher.none.fl_str_mv Universidade Federal de Santa Maria
Brasil
Odontologia
UFSM
Programa de Pós-Graduação em Ciências Odontológicas
Centro de Ciências da Saúde
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
collection Manancial - Repositório Digital da UFSM
repository.name.fl_str_mv Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv atendimento.sib@ufsm.br||tedebc@gmail.com
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