Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study

Detalhes bibliográficos
Autor(a) principal: Ventura, Rita de Cássia Cabral
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/25827
Resumo: Tese de Mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2015
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spelling Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro studyMedicina dentáriaImplantes dentáriosTeses de mestrado - 2015Domínio/Área Científica::Ciências Médicas: Medicina ClínicaTese de Mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2015Purpose: The aim of the present study was to evaluate if there was any significant difference in accuracy between implant-level impressions made on internal connection and external connection implant systems. The null hypothesis tested was that the accuracy of implant-impressions was not affected when internal connection or external connection implants were used. Materials and Methods: Two master models were fabricated with polyurethane by duplicating an edentulous mandibular arch. In each model four implant analogs (Biomet 3i®, Florida, USA) – internal connection (Group A) and external connection (Group B) - were placed in the intra-mental foramen region, simulating a supra osseous clinical environment and with longitudinal axis parallel to each other. The replicas were numbered anti-clockwise from 1 to 4 based on a frontal view of the master cast. For each group, reference bars machined to fit passively were fabricated using cobalt-chromium alloy. Twenty medium-consistency polyether (Impregum™ Penta™; 3M ESPE, Germany) impressions - 10 for each group - were made using the open-tray technique. Each cast produced was assessed for accuracy by attaching the respective reference framework with a single screw on analog number 1 and measuring the vertical gap between each cylinder and the respective analog (2, 3 or 4) at four different points - buccal, lingual, distal and mesial – using a toolmakers’ microscope. Results: The results showed there were significant differences between internal and external connections, comparing measurements in all analog/point combinations. It was determined that in Group B (External connection) the vertical gaps were statistically higher than the ones verified in Group A (Internal connection). Conclusions: The results of this study suggest that internal connection implants present better results on the accuracy of implant impressions comparing to external connection implants. Implant-level impressions made on external connection implants resulted in statistically lower accuracy than the internal connection group.Francisco, HelenaCaramês, João, 1962-Repositório da Universidade de LisboaVentura, Rita de Cássia Cabral2017-01-11T11:29:57Z201520152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/25827TID:201273101enginfo: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:RCAAP2023-11-08T16:15:32Zoai:repositorio.ul.pt:10451/25827Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:42:36.488604Repositório 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 Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
title Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
spellingShingle Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
Ventura, Rita de Cássia Cabral
Medicina dentária
Implantes dentários
Teses de mestrado - 2015
Domínio/Área Científica::Ciências Médicas: Medicina Clínica
title_short Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
title_full Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
title_fullStr Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
title_full_unstemmed Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
title_sort Influence of connection type (internal VS. external) on implant impression accuracy: an in vitro study
author Ventura, Rita de Cássia Cabral
author_facet Ventura, Rita de Cássia Cabral
author_role author
dc.contributor.none.fl_str_mv Francisco, Helena
Caramês, João, 1962-
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Ventura, Rita de Cássia Cabral
dc.subject.por.fl_str_mv Medicina dentária
Implantes dentários
Teses de mestrado - 2015
Domínio/Área Científica::Ciências Médicas: Medicina Clínica
topic Medicina dentária
Implantes dentários
Teses de mestrado - 2015
Domínio/Área Científica::Ciências Médicas: Medicina Clínica
description Tese de Mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2015
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2015-01-01T00:00:00Z
2017-01-11T11:29:57Z
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/10451/25827
TID:201273101
url http://hdl.handle.net/10451/25827
identifier_str_mv TID:201273101
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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