EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR

Detalhes bibliográficos
Autor(a) principal: Szesz, Anna Luiza
Data de Publicação: 2014
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UEPG
Texto Completo: http://tede2.uepg.br/jspui/handle/prefix/1841
Resumo: This study evaluated, the intensity of light transmitted through a translucent fiber post ( Whitepost DC n° 2) using an experimental system and the effect of different densities of light energy in adhesive properties: degree of conversion within the hybrid layer (DC), nanoleakage (NL) and bond strength (μTBS) of two adhesive systems to dentin (Ambar [AM] and Excite DSC [EX]). The roots of 72 human premolars were prepared endodontically and divided into groups (n=6) according to the combination of factors: adhesive system (AM and EX) and energy density (16, 48 and 288 J/cm²). After cementing fiber post the roots with fiber post were subjected to μTBS (push-out) (n = 7) in a universal testing machine (0.5 mm/min). DC analysis (%) in situ (n = 2) was made by micro -Raman spectroscopy and NL was evaluated by SEM after immersing the samples in 50% silver nitrate (n=3). Data from the μTBS, NL, and DC of each adhesive were analyzed by 3-way repeated measures ANOVA (adhesive vs. Energy density vs. root third) and Tukey test (α = 0.05) . To measure the intensity of light transmitted through the post, the measuring device consisted of a light beam pulsed laser focusing perpendicular to the bottom surface of the post, and in the direction parallel to the axis of the post detector capable of measuring the scattered light at the post. To simulate the variation of light intensity, filters were used in this system with optical density varying the light intensity of 100, 25 and 10%. The results of μTBS (MPa) showed a significant difference for the middle and apical (p <0.05) thirds when an increase in energy density from 16 to 48 and 288 J/cm²respectively. The DC (%) significantly increased the density of 288 J/cm² in the middle and apical thirds compared the same with the lower energy density of 16 J/cm² (p < 0.05). The NL (%) decreases significantly from the energy density of 48 J/cm² in the middle and apical (p thirds < 0.05) and remained constant for the density of 288 J/cm² (p > 0.05), in general, none of the tests results showed a significant difference when the cervical third was evaluated . Regarding the results of the intensity of light scattered by the post, light intensity reduced to 45,5% in the cervical region, to 14,2% and 5,3% in the middle and apical thirds, respectively. As for simulating the variation of light intensity, it was observed that the increase of the intensity of light incident on the base of the cervical post provides a gain of intensity of light reaching the apical level.
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spelling Loguércio, Alessandro DouradoCPF:38196913249http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4763905J5Arrais, Cesar Augusto GalvãoCPF:20064607810http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4770689J6Silva, André Luis Faria eCPF:1184848696http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4138436Y5CPF:0567127959http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4436251J2Szesz, Anna Luiza2017-07-24T19:22:35Z2014-09-292017-07-24T19:22:35Z2014-02-25SZESZ, Anna Luiza. Effects of energy density of light-activation of adhesive systems on bonding fiber posts to root canals. 2014. 113 f. Dissertação (Mestrado em Clinica Integrada, Dentística Restauradora e Periodontia) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2014.http://tede2.uepg.br/jspui/handle/prefix/1841This study evaluated, the intensity of light transmitted through a translucent fiber post ( Whitepost DC n° 2) using an experimental system and the effect of different densities of light energy in adhesive properties: degree of conversion within the hybrid layer (DC), nanoleakage (NL) and bond strength (μTBS) of two adhesive systems to dentin (Ambar [AM] and Excite DSC [EX]). The roots of 72 human premolars were prepared endodontically and divided into groups (n=6) according to the combination of factors: adhesive system (AM and EX) and energy density (16, 48 and 288 J/cm²). After cementing fiber post the roots with fiber post were subjected to μTBS (push-out) (n = 7) in a universal testing machine (0.5 mm/min). DC analysis (%) in situ (n = 2) was made by micro -Raman spectroscopy and NL was evaluated by SEM after immersing the samples in 50% silver nitrate (n=3). Data from the μTBS, NL, and DC of each adhesive were analyzed by 3-way repeated measures ANOVA (adhesive vs. Energy density vs. root third) and Tukey test (α = 0.05) . To measure the intensity of light transmitted through the post, the measuring device consisted of a light beam pulsed laser focusing perpendicular to the bottom surface of the post, and in the direction parallel to the axis of the post detector capable of measuring the scattered light at the post. To simulate the variation of light intensity, filters were used in this system with optical density varying the light intensity of 100, 25 and 10%. The results of μTBS (MPa) showed a significant difference for the middle and apical (p <0.05) thirds when an increase in energy density from 16 to 48 and 288 J/cm²respectively. The DC (%) significantly increased the density of 288 J/cm² in the middle and apical thirds compared the same with the lower energy density of 16 J/cm² (p < 0.05). The NL (%) decreases significantly from the energy density of 48 J/cm² in the middle and apical (p thirds < 0.05) and remained constant for the density of 288 J/cm² (p > 0.05), in general, none of the tests results showed a significant difference when the cervical third was evaluated . Regarding the results of the intensity of light scattered by the post, light intensity reduced to 45,5% in the cervical region, to 14,2% and 5,3% in the middle and apical thirds, respectively. As for simulating the variation of light intensity, it was observed that the increase of the intensity of light incident on the base of the cervical post provides a gain of intensity of light reaching the apical level.Este estudo avaliou, através de um sistema experimental, a intensidade de luz transmitida por um pino de fibra translúcido (Whitepost DC n°2) e o efeito de diferentes densidades de energia da luz nas propriedades adesivas: grau de conversão no interior da camada híbrida (GC), nanoinfiltração (NI) e resistência de união (RU) à dentina de dois sistemas adesivos (Ambar [AM] e Excite DSC [EX]). As raízes de 72 pré-molares humanos foram preparadas endodonticamente e divididas em grupos (n=6) de acordo com a combinação dos principais fatores: sistema adesivo (AM e EX), e densidade de energia (16, 48 e 288 J/cm²). Após cimentação dos pinos de fibra, foi testado a RU (push-out) (n=7) em uma máquina de ensaios universal (0,5 mm/min). A análise do GC (%) in situ (n=2) foi feita através da espectroscopia micro-Raman e a NI foi avaliada por MEV após a imersão das amostras em 50% em nitrato de prata (n=3). Os dados de RU, GC e NI de cada adesivo foram analisados por ANOVA de 3 fatores de medidas repetidas (adesivo vs. densidade de energia vs. terço radicular) e teste de Tukey (α = 0,05). Para mensuração da intensidade de luz transmitida pelo pino, o sistema era constituído por um feixe de luz laser pulsado incidindo perpendicularmente a superfície da base do pino, e na direção paralela ao eixo do pino um detector capaz de mensurar a luz espalhada no pino. Para simular a variação da intensidade de luz foram utilizados junto a esse sistema filtros de densidade óptica, variando a intensidade de luz em 100, 25 e 10%. Os resultados de RU (MPa) demonstraram diferença significativa para os terços médio e apical (p < 0,05) quando houve aumento da densidade de energia de 16 para 48 e 288 J/cm² respectivamente. O GC (%) aumentou significativamente na densidade de 288 J/cm² nos terços médio e apical quando comparado os mesmos terços com a menor densidade de energia 16 J/cm² (p <0,05). A NI (%) diminui significativamente a partir da densidade de energia de 48 J/cm² nos terços médio e apical (p < 0,05) e se manteve constante para a densidade de 288 J/cm² (p > 0,05). Em geral, nenhum dos testes apresentaram resultados com diferença significativa quando o terço cervical foi avaliado. Em relação aos resultados da intensidade da luz espalhada pelo pino observamos que na região cervical a intensidade de luz reduz para 45,5 % no terço médio para 14,2 % e para apical 5,3%. Quanto a simulação da variação da intensidade da luz, foi possível observar que o aumento da intensidade de luz incidente na base cervical do pino proporciona um ganho de intensidade de luz que chega ao nível apical.Made available in DSpace on 2017-07-24T19:22:35Z (GMT). No. of bitstreams: 1 ANNA LUIZA SZESZ.pdf: 3989892 bytes, checksum: 237bfbd8af89362f6139a3c445f884d8 (MD5) Previous issue date: 2014-02-25application/pdfporUNIVERSIDADE ESTADUAL DE PONTA GROSSAPrograma de Pós-Graduação em OdontologiaUEPGBRClinica Integrada, Dentística Restauradora e Periodontiadensidade de energiadentina radiculargrau de conversãonanoinfiltraçãopino de fibra de vidroresistência de uniãoenergy densitybond strengthnanoleakagedegree of conversionfiber postsroot dentinCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIAEFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAREffects of energy density of light-activation of adhesive systems on bonding fiber posts to root canalsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPGinstname:Universidade Estadual de Ponta Grossa (UEPG)instacron:UEPGORIGINALANNA LUIZA SZESZ.pdfapplication/pdf3989892http://tede2.uepg.br/jspui/bitstream/prefix/1841/1/ANNA%20LUIZA%20SZESZ.pdf237bfbd8af89362f6139a3c445f884d8MD51prefix/18412017-07-24 16:22:35.308oai:tede2.uepg.br:prefix/1841Biblioteca Digital de Teses e Dissertaçõeshttps://tede2.uepg.br/jspui/PUBhttp://tede2.uepg.br/oai/requestbicen@uepg.br||mv_fidelis@yahoo.com.bropendoar:2017-07-24T19:22:35Biblioteca Digital de Teses e Dissertações da UEPG - Universidade Estadual de Ponta Grossa (UEPG)false
dc.title.por.fl_str_mv EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
dc.title.alternative.eng.fl_str_mv Effects of energy density of light-activation of adhesive systems on bonding fiber posts to root canals
title EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
spellingShingle EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
Szesz, Anna Luiza
densidade de energia
dentina radicular
grau de conversão
nanoinfiltração
pino de fibra de vidro
resistência de união
energy density
bond strength
nanoleakage
degree of conversion
fiber posts
root dentin
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
title_short EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
title_full EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
title_fullStr EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
title_full_unstemmed EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
title_sort EFEITO DA DENSIDADE DE ENERGIA DA LUZ NA ADESÃO ENTRE PINOS DE FIBRA E DENTINA RADICULAR
author Szesz, Anna Luiza
author_facet Szesz, Anna Luiza
author_role author
dc.contributor.advisor1.fl_str_mv Loguércio, Alessandro Dourado
dc.contributor.advisor1ID.fl_str_mv CPF:38196913249
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4763905J5
dc.contributor.referee1.fl_str_mv Arrais, Cesar Augusto Galvão
dc.contributor.referee1ID.fl_str_mv CPF:20064607810
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4770689J6
dc.contributor.referee2.fl_str_mv Silva, André Luis Faria e
dc.contributor.referee2ID.fl_str_mv CPF:1184848696
dc.contributor.referee2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4138436Y5
dc.contributor.authorID.fl_str_mv CPF:0567127959
dc.contributor.authorLattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4436251J2
dc.contributor.author.fl_str_mv Szesz, Anna Luiza
contributor_str_mv Loguércio, Alessandro Dourado
Arrais, Cesar Augusto Galvão
Silva, André Luis Faria e
dc.subject.por.fl_str_mv densidade de energia
dentina radicular
grau de conversão
nanoinfiltração
pino de fibra de vidro
resistência de união
topic densidade de energia
dentina radicular
grau de conversão
nanoinfiltração
pino de fibra de vidro
resistência de união
energy density
bond strength
nanoleakage
degree of conversion
fiber posts
root dentin
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
dc.subject.eng.fl_str_mv energy density
bond strength
nanoleakage
degree of conversion
fiber posts
root dentin
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
description This study evaluated, the intensity of light transmitted through a translucent fiber post ( Whitepost DC n° 2) using an experimental system and the effect of different densities of light energy in adhesive properties: degree of conversion within the hybrid layer (DC), nanoleakage (NL) and bond strength (μTBS) of two adhesive systems to dentin (Ambar [AM] and Excite DSC [EX]). The roots of 72 human premolars were prepared endodontically and divided into groups (n=6) according to the combination of factors: adhesive system (AM and EX) and energy density (16, 48 and 288 J/cm²). After cementing fiber post the roots with fiber post were subjected to μTBS (push-out) (n = 7) in a universal testing machine (0.5 mm/min). DC analysis (%) in situ (n = 2) was made by micro -Raman spectroscopy and NL was evaluated by SEM after immersing the samples in 50% silver nitrate (n=3). Data from the μTBS, NL, and DC of each adhesive were analyzed by 3-way repeated measures ANOVA (adhesive vs. Energy density vs. root third) and Tukey test (α = 0.05) . To measure the intensity of light transmitted through the post, the measuring device consisted of a light beam pulsed laser focusing perpendicular to the bottom surface of the post, and in the direction parallel to the axis of the post detector capable of measuring the scattered light at the post. To simulate the variation of light intensity, filters were used in this system with optical density varying the light intensity of 100, 25 and 10%. The results of μTBS (MPa) showed a significant difference for the middle and apical (p <0.05) thirds when an increase in energy density from 16 to 48 and 288 J/cm²respectively. The DC (%) significantly increased the density of 288 J/cm² in the middle and apical thirds compared the same with the lower energy density of 16 J/cm² (p < 0.05). The NL (%) decreases significantly from the energy density of 48 J/cm² in the middle and apical (p thirds < 0.05) and remained constant for the density of 288 J/cm² (p > 0.05), in general, none of the tests results showed a significant difference when the cervical third was evaluated . Regarding the results of the intensity of light scattered by the post, light intensity reduced to 45,5% in the cervical region, to 14,2% and 5,3% in the middle and apical thirds, respectively. As for simulating the variation of light intensity, it was observed that the increase of the intensity of light incident on the base of the cervical post provides a gain of intensity of light reaching the apical level.
publishDate 2014
dc.date.available.fl_str_mv 2014-09-29
2017-07-24T19:22:35Z
dc.date.issued.fl_str_mv 2014-02-25
dc.date.accessioned.fl_str_mv 2017-07-24T19:22:35Z
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.citation.fl_str_mv SZESZ, Anna Luiza. Effects of energy density of light-activation of adhesive systems on bonding fiber posts to root canals. 2014. 113 f. Dissertação (Mestrado em Clinica Integrada, Dentística Restauradora e Periodontia) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2014.
dc.identifier.uri.fl_str_mv http://tede2.uepg.br/jspui/handle/prefix/1841
identifier_str_mv SZESZ, Anna Luiza. Effects of energy density of light-activation of adhesive systems on bonding fiber posts to root canals. 2014. 113 f. Dissertação (Mestrado em Clinica Integrada, Dentística Restauradora e Periodontia) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2014.
url http://tede2.uepg.br/jspui/handle/prefix/1841
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dc.publisher.none.fl_str_mv UNIVERSIDADE ESTADUAL DE PONTA GROSSA
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Odontologia
dc.publisher.initials.fl_str_mv UEPG
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Clinica Integrada, Dentística Restauradora e Periodontia
publisher.none.fl_str_mv UNIVERSIDADE ESTADUAL DE PONTA GROSSA
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UEPG
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collection Biblioteca Digital de Teses e Dissertações da UEPG
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