Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UEPB |
Texto Completo: | http://tede.bc.uepb.edu.br/jspui/handle/tede/3511 |
Resumo: | Objectives: To evaluate the influence of different fiberglass post (FGP) cementation techniques on root fracture resistance, crack detection potential and generation of tomographic and microtomographic artifacts. Methodology: Forty single-rooted human premolars teeth were randomly divided into four groups (n=10): FGA- Fiberglass post cemented with dual-curing resin cement; FGCore- Fiberglass post cemented with dual-curing resin cement with high filler content; MCFG- Metal core fiberglass post cemented with dual- curing resin cement; AFG- Anatomical fiberglass post cemented with dual-curing resin cement. Each tooth was submitted to fracture resistance test at 0.5mm/min in a universal testing machine (ISTRON 3365 Machine). Then, all teeth were scanned on Skyscan 1172 to assess initial tooth morphology and fracture pattern using the following scores: (1) Fracture of the coronal composite resin; (2) Favorable root fracture; and (3) Unfavorable root fracture. In addition, a quantification of the percentage of artifacts generated in Computed Micro- Tomography (Micro-CT) images was performed. Cone-Beam Computed Tomography (CBCT) images were acquired using the CS 9000 3D (Kodak Dental Systems, Carestream Health, Rochester, NY, USA). Each tooth was scanned under four exposure parameters: 74kV, 80kV, 85kV and 90kV. The other parameters were set at 76 µm voxel size, 5 cm x 3.75 cm FOV size and 10 mA. Two observers assessed all CBCT images for root fracture detection using a 5-point confidence scale and a 4-point score for the presence of artifacts. One-way analysis of variance (ANOVA) and Tukey test were used to verify fracture resistance values between groups, while Fisher's exact test was used to verify the association between fracture pattern and groups. Quantitative evaluation of Micro-TC artifacts was analyzed using Kruskall Wallis and Mann Whitney tests. Sensitivity, specificity and area under the ROC curve (AUC) values were calculated and compared by two-way analyses of variance (ANOVA two-way) and Tukey's test Artifact interference on root fracture was assessed by chi-square test. Data were treated statistically at significance level of 5% ( α=0.05). Results: Fracture resistance values varied from 465,38 ± 127,29 N to 364,47 ± 78,64 N (p=0.159). No association between the fracture pattern and fiberglass cementation techniques was observed (p=0.276). The quantification of Micro-CT image artifacts for all groups presented less than 10% of artifacts (p=0,062). There were no significant differences between the exposure parameters for sensitivity, specificity and AUC values (p>0.05). AFG presented higher sensitivity values, statistically differing from FGCore and MCFG (p=0.037). MCFG specificity values differed statistically from FGCore (p=0.012). MCFG presented higher percentage of moderate artifacts than the other studied groups (p=0.001). Conclusions: Fiberglass cementation techniques did not influence the resistance, fracture pattern, and Micro-CT artifact intensity. Different exposure parameters do not seem to interfere on root fracture detection. The presence of a metal core fiberglass post decreases root fracture detection specificity values and increases artifact intensity in CBCT images. |
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Melo, Daniela Pita de70052719553http://lattes.cnpq.br/2824485698432887Bento, Patrícia Meira48698024491http://lattes.cnpq.br/7371238765825611Melo, Saulo Leonardo Sousa00400707519http://lattes.cnpq.br/3043966507619496Oliveira, Matheus Lima de33350542883http://lattes.cnpq.br/3156969817236677Cavalcanti, Yuri Wanderley06637446440http://lattes.cnpq.br/130369520544280207375203458http://lattes.cnpq.br/4194623340602725Peixoto, Larissa Rangel2019-10-10T14:14:48Z2019-07-22PEIXOTO, L. R. Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares. 2019. 107f. Tese (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2019.http://tede.bc.uepb.edu.br/jspui/handle/tede/3511Objectives: To evaluate the influence of different fiberglass post (FGP) cementation techniques on root fracture resistance, crack detection potential and generation of tomographic and microtomographic artifacts. Methodology: Forty single-rooted human premolars teeth were randomly divided into four groups (n=10): FGA- Fiberglass post cemented with dual-curing resin cement; FGCore- Fiberglass post cemented with dual-curing resin cement with high filler content; MCFG- Metal core fiberglass post cemented with dual- curing resin cement; AFG- Anatomical fiberglass post cemented with dual-curing resin cement. Each tooth was submitted to fracture resistance test at 0.5mm/min in a universal testing machine (ISTRON 3365 Machine). Then, all teeth were scanned on Skyscan 1172 to assess initial tooth morphology and fracture pattern using the following scores: (1) Fracture of the coronal composite resin; (2) Favorable root fracture; and (3) Unfavorable root fracture. In addition, a quantification of the percentage of artifacts generated in Computed Micro- Tomography (Micro-CT) images was performed. Cone-Beam Computed Tomography (CBCT) images were acquired using the CS 9000 3D (Kodak Dental Systems, Carestream Health, Rochester, NY, USA). Each tooth was scanned under four exposure parameters: 74kV, 80kV, 85kV and 90kV. The other parameters were set at 76 µm voxel size, 5 cm x 3.75 cm FOV size and 10 mA. Two observers assessed all CBCT images for root fracture detection using a 5-point confidence scale and a 4-point score for the presence of artifacts. One-way analysis of variance (ANOVA) and Tukey test were used to verify fracture resistance values between groups, while Fisher's exact test was used to verify the association between fracture pattern and groups. Quantitative evaluation of Micro-TC artifacts was analyzed using Kruskall Wallis and Mann Whitney tests. Sensitivity, specificity and area under the ROC curve (AUC) values were calculated and compared by two-way analyses of variance (ANOVA two-way) and Tukey's test Artifact interference on root fracture was assessed by chi-square test. Data were treated statistically at significance level of 5% ( α=0.05). Results: Fracture resistance values varied from 465,38 ± 127,29 N to 364,47 ± 78,64 N (p=0.159). No association between the fracture pattern and fiberglass cementation techniques was observed (p=0.276). The quantification of Micro-CT image artifacts for all groups presented less than 10% of artifacts (p=0,062). There were no significant differences between the exposure parameters for sensitivity, specificity and AUC values (p>0.05). AFG presented higher sensitivity values, statistically differing from FGCore and MCFG (p=0.037). MCFG specificity values differed statistically from FGCore (p=0.012). MCFG presented higher percentage of moderate artifacts than the other studied groups (p=0.001). Conclusions: Fiberglass cementation techniques did not influence the resistance, fracture pattern, and Micro-CT artifact intensity. Different exposure parameters do not seem to interfere on root fracture detection. The presence of a metal core fiberglass post decreases root fracture detection specificity values and increases artifact intensity in CBCT images.Objetivos: Avaliar a influência de diferentes técnicas de cimentação de pinos de fibra de vidro (PFV) na resistência à fratura radicular, potencial de detecção de trincas e geração de artefatos tomográficos e microtomográficos. Metodologia: Quarenta dentes pré-molares unirradiculares foram divididos aleatoriamente em quatro grupos (n = 10): FGA- PFV cimentado com cimento resinoso dual; FGCore- PFV cimentado com cimento resinoso dual com alto conteúdo de carga; MCFG- PFV com filamento metálico cimentado com cimento resinoso dual; AFG – PFV anatomizado cimentado com cimento resinoso dual. Cada dente foi submetido ao teste de resistência à fratura a 0,5mm/min em uma máquina universal de testes (ISTRON 3365 Machine). A amostra foi escaneada no Skyscan 1172 (Bruker, Kontich, Bélgica) para avaliar a morfologia inicial dos dentes e o padrão de fratura, utilizando os seguintes escores: (1) fratura do núcleo de preenchimento; (2) fratura radicular favorável; e (3) fratura radicular desfavorável. Além disso, foi realizada uma quantificação da porcentagem de artefatos gerados em imagens de Micro-Tomografia Computadorizada (Micro-TC). As imagens de Tomografia Computadorizada de Feixe Cônico (TCFC) foram adquiridas usando o CS 9000 3D (Kodak Dental Systems, Carestream Health, Rochester, NY, EUA). Cada dente foi escaneado sob quatro parâmetros de exposição: 74kV, 80kV, 85kV e 90kV. Os demais parâmetros foram fixados em 76 µm de tamanho de voxel, 5 cm x 3,75 cm de tamanho de FOV e 10 mA. Dois observadores avaliaram as imagens de TCFC para detecção de fratura radicular utilizando uma escala de confiança de 5 pontos e um escore de 4 pontos para a presença de artefatos. A análise de variância unidirecional (ANOVA) e o teste de Tukey foram utilizados para verificar os valores de resistência a fratura entre os grupos, enquanto o teste exato de Fisher foi usado para averiguar a associação entre o padrão de fratura e os grupos. A avaliação quantitativa de artefatos de Micro-TC foi analisada usando os testes de Kruskall Wallis e Mann Whitney. Os valores de sensibilidade, especificidade e área sob a curva ROC (AUC) foram calculados e comparados por análises de variância bidirecional (ANOVA two-way) e teste de Tukey. A interferência dos artefatos no diagnóstico de fratura radicular foi avaliada pelo teste do qui-quadrado. Os dados foram tratados estatisticamente ao nível de significância de 5% (α = 0,05). Resultados: Os valores de resistência à fratura radicular variaram de 465,38 ± 127,29 N a 364,47 ± 78,64 N (p = 0,159). Não foi observada associação estatisticamente significante entre o padrão de fratura e as técnicas de cimentação de PFV (p = 0,276). A quantificação de artefatos de imagem de Micro-TC para todos os grupos apresentou menos de 10% de artefatos (p = 0,062). Não houve diferenças significativas entre os parâmetros de exposição para sensibilidade, especificidade e valores de AUC (p> 0,05). O grupo AFG apresentou maiores valores de sensibilidade, diferindo estatisticamente do FGCore e do MCFG (p = 0,037). Os valores de especificidade do MCFG diferiram estatisticamente do FGCore (p = 0,012), apresentando menores valores. O grupo MCFG apresentou maior porcentagem de artefatos do que os demais grupos estudados (p <0,001). Conclusões: As diferentes técnicas de cimentação de PFV não influenciaram na resistência à fratura, no padrão de fratura e na intensidade de artefatos de Micro-CT. Diferentes parâmetros de exposição não interferem na detecção de fraturas radiculares. A presença do filamento metálico no interior do PFV diminui os valores de especificidade de fratura radicular e aumentou a intensidade do artefato em imagens de TCFC.Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2019-09-30T12:36:06Z No. of bitstreams: 1 PDF - Larissa Rangel Peixoto.pdf: 2424939 bytes, checksum: 8270b91e164211743eee1a7224fe7822 (MD5)Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2019-10-10T14:14:48Z (GMT) No. of bitstreams: 1 PDF - Larissa Rangel Peixoto.pdf: 2424939 bytes, checksum: 8270b91e164211743eee1a7224fe7822 (MD5)Made available in DSpace on 2019-10-10T14:14:48Z (GMT). No. of bitstreams: 1 PDF - Larissa Rangel Peixoto.pdf: 2424939 bytes, checksum: 8270b91e164211743eee1a7224fe7822 (MD5) Previous issue date: 2019-07-22application/pdfhttp://tede.bc.uepb.edu.br/jspui/retrieve/8862/PDF%20-%20Larissa%20Rangel%20Peixoto.pdf.jpgporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Odontologia - PPGOUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPPinos de fibra de vidroArtefatosTomografia Computadorizada de Feixe CônicoArtifactsCone-Beam Computed TomographyFiberglassCIENCIAS DA SAUDE::ODONTOLOGIAInfluência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradicularesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis188746850794111162600600600524871450381110278-2070498469879244349info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBTHUMBNAILPDF - Larissa Rangel Peixoto.pdf.jpgPDF - Larissa Rangel Peixoto.pdf.jpgimage/jpeg3847http://tede.bc.uepb.edu.br/jspui/bitstream/tede/3511/4/PDF+-+Larissa+Rangel+Peixoto.pdf.jpg0455826625184eabd2b6cb3de8d4a0c0MD54TEXTPDF - Larissa Rangel Peixoto.pdf.txtPDF - Larissa Rangel Peixoto.pdf.txttext/plain185479http://tede.bc.uepb.edu.br/jspui/bitstream/tede/3511/3/PDF+-+Larissa+Rangel+Peixoto.pdf.txt2dfae2db59c3f29c160598d4602bb6e3MD53ORIGINALPDF - Larissa Rangel Peixoto.pdfPDF - Larissa Rangel Peixoto.pdfapplication/pdf2424939http://tede.bc.uepb.edu.br/jspui/bitstream/tede/3511/2/PDF+-+Larissa+Rangel+Peixoto.pdf8270b91e164211743eee1a7224fe7822MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81960http://tede.bc.uepb.edu.br/jspui/bitstream/tede/3511/1/license.txt6052ae61e77222b2086e666b7ae213ceMD51tede/35112019-10-11 01:29:02.343oai:tede.bc.uepb.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede.bc.uepb.edu.br/jspui/PUBhttp://tede.bc.uepb.edu.br/oai/requestbc@uepb.edu.br||opendoar:2019-10-11T04:29:02Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB)false |
dc.title.por.fl_str_mv |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
title |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
spellingShingle |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares Peixoto, Larissa Rangel Pinos de fibra de vidro Artefatos Tomografia Computadorizada de Feixe Cônico Artifacts Cone-Beam Computed Tomography Fiberglass CIENCIAS DA SAUDE::ODONTOLOGIA |
title_short |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
title_full |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
title_fullStr |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
title_full_unstemmed |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
title_sort |
Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares |
author |
Peixoto, Larissa Rangel |
author_facet |
Peixoto, Larissa Rangel |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Melo, Daniela Pita de |
dc.contributor.advisor1ID.fl_str_mv |
70052719553 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2824485698432887 |
dc.contributor.referee1.fl_str_mv |
Bento, Patrícia Meira |
dc.contributor.referee1ID.fl_str_mv |
48698024491 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/7371238765825611 |
dc.contributor.referee2.fl_str_mv |
Melo, Saulo Leonardo Sousa |
dc.contributor.referee2ID.fl_str_mv |
00400707519 |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/3043966507619496 |
dc.contributor.referee3.fl_str_mv |
Oliveira, Matheus Lima de |
dc.contributor.referee3ID.fl_str_mv |
33350542883 |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/3156969817236677 |
dc.contributor.referee4.fl_str_mv |
Cavalcanti, Yuri Wanderley |
dc.contributor.referee4ID.fl_str_mv |
06637446440 |
dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/1303695205442802 |
dc.contributor.authorID.fl_str_mv |
07375203458 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4194623340602725 |
dc.contributor.author.fl_str_mv |
Peixoto, Larissa Rangel |
contributor_str_mv |
Melo, Daniela Pita de Bento, Patrícia Meira Melo, Saulo Leonardo Sousa Oliveira, Matheus Lima de Cavalcanti, Yuri Wanderley |
dc.subject.por.fl_str_mv |
Pinos de fibra de vidro Artefatos Tomografia Computadorizada de Feixe Cônico |
topic |
Pinos de fibra de vidro Artefatos Tomografia Computadorizada de Feixe Cônico Artifacts Cone-Beam Computed Tomography Fiberglass CIENCIAS DA SAUDE::ODONTOLOGIA |
dc.subject.eng.fl_str_mv |
Artifacts Cone-Beam Computed Tomography Fiberglass |
dc.subject.cnpq.fl_str_mv |
CIENCIAS DA SAUDE::ODONTOLOGIA |
description |
Objectives: To evaluate the influence of different fiberglass post (FGP) cementation techniques on root fracture resistance, crack detection potential and generation of tomographic and microtomographic artifacts. Methodology: Forty single-rooted human premolars teeth were randomly divided into four groups (n=10): FGA- Fiberglass post cemented with dual-curing resin cement; FGCore- Fiberglass post cemented with dual-curing resin cement with high filler content; MCFG- Metal core fiberglass post cemented with dual- curing resin cement; AFG- Anatomical fiberglass post cemented with dual-curing resin cement. Each tooth was submitted to fracture resistance test at 0.5mm/min in a universal testing machine (ISTRON 3365 Machine). Then, all teeth were scanned on Skyscan 1172 to assess initial tooth morphology and fracture pattern using the following scores: (1) Fracture of the coronal composite resin; (2) Favorable root fracture; and (3) Unfavorable root fracture. In addition, a quantification of the percentage of artifacts generated in Computed Micro- Tomography (Micro-CT) images was performed. Cone-Beam Computed Tomography (CBCT) images were acquired using the CS 9000 3D (Kodak Dental Systems, Carestream Health, Rochester, NY, USA). Each tooth was scanned under four exposure parameters: 74kV, 80kV, 85kV and 90kV. The other parameters were set at 76 µm voxel size, 5 cm x 3.75 cm FOV size and 10 mA. Two observers assessed all CBCT images for root fracture detection using a 5-point confidence scale and a 4-point score for the presence of artifacts. One-way analysis of variance (ANOVA) and Tukey test were used to verify fracture resistance values between groups, while Fisher's exact test was used to verify the association between fracture pattern and groups. Quantitative evaluation of Micro-TC artifacts was analyzed using Kruskall Wallis and Mann Whitney tests. Sensitivity, specificity and area under the ROC curve (AUC) values were calculated and compared by two-way analyses of variance (ANOVA two-way) and Tukey's test Artifact interference on root fracture was assessed by chi-square test. Data were treated statistically at significance level of 5% ( α=0.05). Results: Fracture resistance values varied from 465,38 ± 127,29 N to 364,47 ± 78,64 N (p=0.159). No association between the fracture pattern and fiberglass cementation techniques was observed (p=0.276). The quantification of Micro-CT image artifacts for all groups presented less than 10% of artifacts (p=0,062). There were no significant differences between the exposure parameters for sensitivity, specificity and AUC values (p>0.05). AFG presented higher sensitivity values, statistically differing from FGCore and MCFG (p=0.037). MCFG specificity values differed statistically from FGCore (p=0.012). MCFG presented higher percentage of moderate artifacts than the other studied groups (p=0.001). Conclusions: Fiberglass cementation techniques did not influence the resistance, fracture pattern, and Micro-CT artifact intensity. Different exposure parameters do not seem to interfere on root fracture detection. The presence of a metal core fiberglass post decreases root fracture detection specificity values and increases artifact intensity in CBCT images. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-10-10T14:14:48Z |
dc.date.issued.fl_str_mv |
2019-07-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
PEIXOTO, L. R. Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares. 2019. 107f. Tese (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2019. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/3511 |
identifier_str_mv |
PEIXOTO, L. R. Influência de diferentes técnicas de cimentação de pinos de fibra de vidro na resistência à fratura, detecção de trincas e geração de artefatos em pré-molares unirradiculares. 2019. 107f. Tese (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2019. |
url |
http://tede.bc.uepb.edu.br/jspui/handle/tede/3511 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
188746850794111162 |
dc.relation.confidence.fl_str_mv |
600 600 600 |
dc.relation.department.fl_str_mv |
524871450381110278 |
dc.relation.cnpq.fl_str_mv |
-2070498469879244349 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual da Paraíba |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Odontologia - PPGO |
dc.publisher.initials.fl_str_mv |
UEPB |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
publisher.none.fl_str_mv |
Universidade Estadual da Paraíba |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UEPB instname:Universidade Estadual da Paraíba (UEPB) instacron:UEPB |
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Universidade Estadual da Paraíba (UEPB) |
instacron_str |
UEPB |
institution |
UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB) |
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bc@uepb.edu.br|| |
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