Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing

Detalhes bibliográficos
Autor(a) principal: Pedro, Daniel Rodrigues
Data de Publicação: 2018
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/35448
Resumo: Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2018
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spelling Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageingSaúde oralResinas acrílicasClorexidinaTeses de mestrado - 2018Domínio/Área Científica::Ciências Médicas::Medicina ClínicaTese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2018Objectives: The purpose of this study was to evaluate the effect of chlorhexidine (CHX) loading on the microhardness of three acrylic reline resins, Kooliner, Ufi Gel Hard and Probase Cold after a thermal ageing process. Methods: For Kooliner reline resin, five CHX concentrations were studied, 1%, 2.5%, 5% and 7.5%. For Ufi Gel Hard, 1%, 2.5%, 5%, 7.5% and 10% CHX groups were introduced while Probase Cold only had 1%, 2.5%, 5% CHX concentrations. Control groups (0% CHX) were included in all materials. During the ageing procedure, 8 specimens per group of CHX concentration, with 64x10x3.3mm, were aged using a thermocycling machine, completing 1000 cycles of thermal fluctuations between 5°C and 55°C. Finally, all specimens were tested for Knoop hardness (30 sec, 98 mN) as 12 measurements were made in each specimen. Data was submitted to nonparametric tests according to the Kruskal-Wallis method followed by multiple comparisons using Mann-Whitney tests with Bonferroni corrections, being considered the 5% level of significance (α=0.05). Results: Loading Kooliner and Probase Cold resins with CHX showed no effect on microhardness (p>0.05), after submitted to thermal ageing process. The microhardness of Ufi Gel Hard resin was influenced (p<0.05) by the concentration of CHX. Ufi Gel Hard 2,5% CHX group presented higher microhardness (p<0.05) when comparing to control, after submitted to thermal ageing. Conclusions: There is no decrease in microhardness of acrylic reline resins loaded with different concentrations of CHX after thermal ageing.Neves, Maria Cristina Bettencourt, 1976-Portugal, Jaime, 1969-Repositório da Universidade de LisboaPedro, Daniel Rodrigues2018-11-23T17:34:31Z20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/35448TID:201983869enginfo: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:RCAAP2023-11-08T16:31:19Zoai:repositorio.ul.pt:10451/35448Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:49:51.656822Repositório 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 Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
title Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
spellingShingle Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
Pedro, Daniel Rodrigues
Saúde oral
Resinas acrílicas
Clorexidina
Teses de mestrado - 2018
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
title_short Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
title_full Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
title_fullStr Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
title_full_unstemmed Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
title_sort Effect of chlorhexidine loading on the microhardness of acrylic reline resins after thermal ageing
author Pedro, Daniel Rodrigues
author_facet Pedro, Daniel Rodrigues
author_role author
dc.contributor.none.fl_str_mv Neves, Maria Cristina Bettencourt, 1976-
Portugal, Jaime, 1969-
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Pedro, Daniel Rodrigues
dc.subject.por.fl_str_mv Saúde oral
Resinas acrílicas
Clorexidina
Teses de mestrado - 2018
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
topic Saúde oral
Resinas acrílicas
Clorexidina
Teses de mestrado - 2018
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
description Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2018
publishDate 2018
dc.date.none.fl_str_mv 2018-11-23T17:34:31Z
2018
2018-01-01T00:00:00Z
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/10451/35448
TID:201983869
url http://hdl.handle.net/10451/35448
identifier_str_mv TID:201983869
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
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