Fatigue life of protaper next TM instruments, an in vitro analysis
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2014 |
| Tipo de documento: | Dissertação |
| Idioma: | eng |
| Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
| Texto Completo: | http://hdl.handle.net/10451/25480 |
Resumo: | Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2014 |
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Fatigue life of protaper next TM instruments, an in vitro analysisInstrumentos dentáriosTeses de mestrado - 2014Domínio/Área Científica::Ciências Médicas::Medicina ClínicaTese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2014INTRODUCTION: Nickel-titanium instruments were introduced to facilitate canal preparation. Despite several advantages, instrument separation remains a major concern in Endodontics due to several factors. There are several systems of endodontic files and the purpose of this study was to characterize the cyclic fatigue of ProTaper Next TM instruments, and compare it to other rotary and reciprocating systems. MATERIAL AND METHODS: Twenty-four rotary nickel-titanium of the ProTaper Next TM system were used and analyzed in this study. The instruments were divided into three groups whether they were X1, X2 or X3 instruments. A mechanical device was used to simulate the root canal system with a radius of curvature of 4,7 mm and an angle of curvature of 45º. Each instrument was submitted to the test with a rotational speed of 300 rpm and a torque of 4 N cm. The testing time was registered with a digital chronometer until tip separation occured. Data obtained such as time to fracture, fracture length of the instrument tested and number of cycles to fracture were statistically analyzed by the non-parametric Kruskal-Wallis test. ProTaper Next X2 and WaveOneTM Primary data were analyzed with the t-student test for independent samples. Significance was set at the 95% confidence level. RESULTS: X1 instrument proved to be statistically significant more resistant to cyclic fatigue that instruments X3 and X2, respectively. DISCUSSION AND CONCLUSIONS: Compared with different rotary and reciprocating systems such as WaveOneTM, ProFile® and ProTaper Universal®, the ProTaper Next TM system suggests being less resistant to cyclic fatigue. During clinical practice, clinicians should be aware of the mechanical properties of the instruments chosen and take into account the lower resistance to cyclic fatigue of ProTaper Next TM files when compared to other instrumentation systems.Ginjeira, AntónioMartins, Rui F.Repositório da Universidade de LisboaVaz, Mariana Soares Maurício Barcelos2016-12-28T16:12:47Z201420142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/25480TID:201268469enginfo: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:RCAAP2023-11-08T16:14:43Zoai:repositorio.ul.pt:10451/25480Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:42:15.586029Repositório 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 |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| title |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| spellingShingle |
Fatigue life of protaper next TM instruments, an in vitro analysis Vaz, Mariana Soares Maurício Barcelos Instrumentos dentários Teses de mestrado - 2014 Domínio/Área Científica::Ciências Médicas::Medicina Clínica |
| title_short |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| title_full |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| title_fullStr |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| title_full_unstemmed |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| title_sort |
Fatigue life of protaper next TM instruments, an in vitro analysis |
| author |
Vaz, Mariana Soares Maurício Barcelos |
| author_facet |
Vaz, Mariana Soares Maurício Barcelos |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
Ginjeira, António Martins, Rui F. Repositório da Universidade de Lisboa |
| dc.contributor.author.fl_str_mv |
Vaz, Mariana Soares Maurício Barcelos |
| dc.subject.por.fl_str_mv |
Instrumentos dentários Teses de mestrado - 2014 Domínio/Área Científica::Ciências Médicas::Medicina Clínica |
| topic |
Instrumentos dentários Teses de mestrado - 2014 Domínio/Área Científica::Ciências Médicas::Medicina Clínica |
| description |
Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2014 |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014 2014 2014-01-01T00:00:00Z 2016-12-28T16:12:47Z |
| 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/10451/25480 TID:201268469 |
| url |
http://hdl.handle.net/10451/25480 |
| identifier_str_mv |
TID:201268469 |
| 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 |
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reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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