Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments

Detalhes bibliográficos
Autor(a) principal: Pereira, Isabel
Data de Publicação: 2017
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/29545
Resumo: Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2017
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spelling Cyclic fatigue behaviour of wave one gold compared to reciproc blue instrumentsEndodontiaMateriais dentáriosTeses de mestrado - 2017Domínio/Área Científica::Ciências Médicas::Medicina ClínicaTese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2017INTRODUCTION: Mechanical files have drastically altered the treatment protocol in endodontics, allowing for quicker and easier treatment times and more thorough debridement of the canal system. Despite the advantages of the Ni-Ti alloy files, instrument separation still remains a major concern when using these files. OBJECTIVES: The purpose of this study was to compare the cyclic fatigue behavior of WaveOne® Gold instruments and compare it to Reciproc® Blue instruments. MATERIAL AND METHODS: Forty nickel-titanium files of WOG and RB systems were analyzed in this study. Files were divided into 4 experimental groups (n=10):Group A1: WaveOne® Gold Primary files without sodium hypochlorite, Group A2: Reciproc® Blue files without sodium hypochlorite, Group B1: WaveOne® Gold Primary with sodium hypochlorite and Group B2: Reciproc® Blue with sodium hypochlorite. A mechanical device was used to simulate the root canal system , a radius of curvature 4,7mm and an angle of curvature 45º. Each WOG and RB files, were submitted to a respectively, rotational speed of 350 rpm and 300 rpm . The time to fracture was registered with a digital chronometer until tip separation occurred. The number of cycles to fracture was calculated by multiplying time by rotational speed. The fracture length was measured with a manual caliper. Data obtained was recorded and statistically analyzed using the non-parametric Mann-Whitney U test or the independent t-student test taking into account the results of the normality tests previously applied. Significance was set at 95% confidence level. RESULTS: B2 instrument proved to be statistically more resistant to cyclic fatigue than A1, A2 and B2. CONCLUSION: Within the limitations of this study, Reciproc® Blue files with irrigation demonstrated statistically greater resistance to cyclic fatigue. Clinicians should be aware of the mechanical properties to choose the best file, selecting systems with higher fracture resistance to cyclic fatigue.Ginjeira, António Manuel Pinto, 1958-Repositório da Universidade de LisboaPereira, Isabel2017-11-02T12:51:23Z201720172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/29545TID:201737183enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T16:21:38Zoai:repositorio.ul.pt:10451/29545Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:45:23.356056Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
title Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
spellingShingle Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
Pereira, Isabel
Endodontia
Materiais dentários
Teses de mestrado - 2017
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
title_short Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
title_full Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
title_fullStr Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
title_full_unstemmed Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
title_sort Cyclic fatigue behaviour of wave one gold compared to reciproc blue instruments
author Pereira, Isabel
author_facet Pereira, Isabel
author_role author
dc.contributor.none.fl_str_mv Ginjeira, António Manuel Pinto, 1958-
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Pereira, Isabel
dc.subject.por.fl_str_mv Endodontia
Materiais dentários
Teses de mestrado - 2017
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
topic Endodontia
Materiais dentários
Teses de mestrado - 2017
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
description Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2017
publishDate 2017
dc.date.none.fl_str_mv 2017-11-02T12:51:23Z
2017
2017
2017-01-01T00:00:00Z
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://hdl.handle.net/10451/29545
TID:201737183
url http://hdl.handle.net/10451/29545
identifier_str_mv TID:201737183
dc.language.iso.fl_str_mv eng
language eng
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.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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