Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study

Bibliographic Details
Main Author: Braz, Luís Miguel Baptista
Publication Date: 2016
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10451/26222
Summary: Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2016
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spelling Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro studyMateriais dentáriosResinas acrílicasImplantes dentáriosTeses de mestrado - 2016Domínio/Área Científica::Ciências Médicas::Medicina ClínicaTese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2016Purpose: The aim of the present study was to evaluate if there was any significant difference in accuracy between multiple-unit dental implant casts obtained from splinted direct impression techniques using 2 splinting materials by comparing the casts to the reference models. The null hypothesis tested was that the accuracy of implant-impressions was not affected regardless of the splinting material used. Materials and Methods: One master model was fabricated with polyurethane by duplicating an edentulous mandibular arch. Four implant analogs (Biomet 3i®, Florida, USA- external connection) 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. Reference bars machined to fit passively were fabricated using cobalt-chromium alloy. The implant copings were splinted, after the appliance of a matrix of dental floss (ACCLEAN®, Henry Schein®, New York, USA), with CONLIGHT photopolymerizing composite (Conlight; Kuss Dental, Madrid, Spain) (Group A) and GC acrylic resin (GC pattern™; GC Corp, Tokyo, Japan) (Group B), twenty impressions were obtained - ten for each group - in accordance with manufacturer’s directions using a two-step impression technique: Putty - consistency vinyl polysiloxane (Panasil® Putty Soft, Kettenbach®, Eschenburg, Germany) was used as a tray material combinated with light-consistency vinyl polysiloxane (Panasil® Initial Contact Light, Kettenbach®, Eschenburg, Germany). 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 toolmaker’s microscope. Results: The results showed there were significant differences between Group A (photopolymerizing composite) and Group B (PMMA autopolymerizing resin), comparing measurements in all analog/ point combinations. It was determined that in Group B the vertical gaps were statistically higher than the ones verified in Group A. vii Conclusions: The results of this study suggest that implant impressions splinted with photopolymerizing composite (Conlight; Kuss Dental, Madrid, Spain) presents better results on the accuracy comparing to implant impressions splinted with PMMA autopolymerizing acrylic resin (GC pattern™; GC Corp, Tokyo, Japan). Implant-level impressions made with PMMA autopolymerizing splinted resin resulted in statistically lower accuracy than the ones made in the photopolymerizing composite group.Caramês, João, 1962-Francisco, HelenaRepositório da Universidade de LisboaBraz, Luís Miguel Baptista2017-01-26T11:10:27Z201620162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/26222TID:201291231enginfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T13:35:13Zoai:repositorio.ulisboa.pt:10451/26222Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T02:48:35.301717Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
title Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
spellingShingle Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
Braz, Luís Miguel Baptista
Materiais dentários
Resinas acrílicas
Implantes dentários
Teses de mestrado - 2016
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
title_short Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
title_full Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
title_fullStr Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
title_full_unstemmed Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
title_sort Influence of splinting materials (auto vs. photopolymerizing) on implant impression accuracy: an in vitro study
author Braz, Luís Miguel Baptista
author_facet Braz, Luís Miguel Baptista
author_role author
dc.contributor.none.fl_str_mv Caramês, João, 1962-
Francisco, Helena
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Braz, Luís Miguel Baptista
dc.subject.por.fl_str_mv Materiais dentários
Resinas acrílicas
Implantes dentários
Teses de mestrado - 2016
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
topic Materiais dentários
Resinas acrílicas
Implantes dentários
Teses de mestrado - 2016
Domínio/Área Científica::Ciências Médicas::Medicina Clínica
description Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2016
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016-01-01T00:00:00Z
2017-01-26T11:10:27Z
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/10451/26222
TID:201291231
url http://hdl.handle.net/10451/26222
identifier_str_mv TID:201291231
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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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