Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems

Detalhes bibliográficos
Autor(a) principal: Strelhow, Samira Sandy Ferreira
Data de Publicação: 2017
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: https://www.teses.usp.br/teses/disponiveis/25/25146/tde-08122021-181122/
Resumo: Statement of the problem. The marginal integrity of monolithic crowns is an essential factor for longevity. Due to the wide application of CAD/CAM systems, evaluation of production accuracy is of great clinical interest. Purpose. Evaluating the marginal chipping of monolithic lithium disilicate crowns produced by four different CAD-CAM systems. Material and methods. Four CAD-CAM systems were selected: Ceramill (Ceramill Motion 2), Cerec (Cerec inLab MC XL), EDG (CAM5-S1 SmartDent) and Zirkonzahn (M5 Heavy). An artificial lower first molar was prepared for a full crown, duplicated in plaster, scanned and a crown was designed following standardized parameters. Ten lithium disilicate crowns (IPS e.max CAD) per group were milled. Images were obtained using a scanning stereomicroscope Stemi 2000-C (Zeiss), overlapped (Adobe Photoshop CS6 software) and measurents of the marginal perimeter and chipping area were performed (ImageJ software). To evaluate the degree of marginal chipping, the Chipping Factor (CF) of each crown was calculated and the data were subjected to Kruskal-Wallis One-way test followed by Dunns method (p< 0.05). Results. Based on SD and absolute mean values, the CF of Ceramill (14,5 ± 8,3) and Cerec (13,4 ± 9,4) groups was statistically higher than EDG (3,4 ± 1,2) and Zirkonzahn (2,8 ± 1,3). Conclusion. The data demonstrated the influence of selected parameters during the design, parameters settings and manufacturing tools of CAD/CAM systems on the marginal integrity of monolithic crowns.
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spelling Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systemsAnálise do lascamento marginal de coroas monolíticas de dissilicato de lítio confeccionadas por quatro sistemas CAD/CAMAdaptação Marginal DentáriaCAD/CAMCAD/CAMCerâmicaCeramicsCoroas dentalDental CrownsDental Marginal AdaptationStatement of the problem. The marginal integrity of monolithic crowns is an essential factor for longevity. Due to the wide application of CAD/CAM systems, evaluation of production accuracy is of great clinical interest. Purpose. Evaluating the marginal chipping of monolithic lithium disilicate crowns produced by four different CAD-CAM systems. Material and methods. Four CAD-CAM systems were selected: Ceramill (Ceramill Motion 2), Cerec (Cerec inLab MC XL), EDG (CAM5-S1 SmartDent) and Zirkonzahn (M5 Heavy). An artificial lower first molar was prepared for a full crown, duplicated in plaster, scanned and a crown was designed following standardized parameters. Ten lithium disilicate crowns (IPS e.max CAD) per group were milled. Images were obtained using a scanning stereomicroscope Stemi 2000-C (Zeiss), overlapped (Adobe Photoshop CS6 software) and measurents of the marginal perimeter and chipping area were performed (ImageJ software). To evaluate the degree of marginal chipping, the Chipping Factor (CF) of each crown was calculated and the data were subjected to Kruskal-Wallis One-way test followed by Dunns method (p< 0.05). Results. Based on SD and absolute mean values, the CF of Ceramill (14,5 ± 8,3) and Cerec (13,4 ± 9,4) groups was statistically higher than EDG (3,4 ± 1,2) and Zirkonzahn (2,8 ± 1,3). Conclusion. The data demonstrated the influence of selected parameters during the design, parameters settings and manufacturing tools of CAD/CAM systems on the marginal integrity of monolithic crowns.Afirmação do problema. A integridade marginal de coroas monolíticas é um fator essencial para sua longevidade. Devido a ampla aplicação dos sistemas CAD-CAM disponíveis, a avaliação da precisão de sua produção é de grande interesse clínico. Finalidade. Avaliação do lascamento marginal de coroas monolíticas de dissilicato de lítio produzidas por quatro sistemas CAD-CAM diferentes. Material e métodos. Foram selecionados quatro sitemas CAD-CAM: Ceramill (Ceramill Motion 2), Cerec (Cerec inLab MC XL), EDG (CAM5-S1 SmartDent) e Zirkonzahn (M5 Heavy). Um primeiro molar inferior artificial foi preparado para coroa total, duplicado em gesso, digitalizado e a coroa foi projetada seguindo parâmetros padronizados. Dez coroas de dissilicato de lítio (IPS e.max CAD) foram fresadas por grupo. Para cada grupo o sistema foi utilizado em sua totalidade: scanner, software do design e unidade de fresagem. Imagens foram obtidas usando o estereomicroscópio Stemi 2000-C (Zeiss), sobrepostas (programa Adobe Photoshop CS6) e medidas do perímetro marginal e área de lascamento foram realizadas (programa ImageJ). Para avaliar o grau de lascamento da margem, o Fator de Lascamento (FL) de cada coroa foi calculado e os dados foram submetidos ao teste de Kruskal-Wallis, seguido pelo método de Dunn (p < 0,05). Resultados. Com base nos valores médios absolutos e DP, o FL dos grupos Ceramill (14,5 ± 8,3) e Cerec (13,4 ± 9,4) foram estatisticamente maiores do que os grupos EDG (3,4 ± 1,2) e Zirkonzahn (2,8 ± 1,3). Conclusão. Os dados demonstraram a influência dos parâmetros selecionados durante o design, das configurações e ferramentas de confecção dos sistemas CAD / CAM sobre a integridade marginal das coroas monolíticas.Biblioteca Digitais de Teses e Dissertações da USPValle, Accacio Lins doStrelhow, Samira Sandy Ferreira2017-06-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/25/25146/tde-08122021-181122/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2021-12-09T20:08:02Zoai:teses.usp.br:tde-08122021-181122Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212021-12-09T20:08:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
Análise do lascamento marginal de coroas monolíticas de dissilicato de lítio confeccionadas por quatro sistemas CAD/CAM
title Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
spellingShingle Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
Strelhow, Samira Sandy Ferreira
Adaptação Marginal Dentária
CAD/CAM
CAD/CAM
Cerâmica
Ceramics
Coroas dental
Dental Crowns
Dental Marginal Adaptation
title_short Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
title_full Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
title_fullStr Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
title_full_unstemmed Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
title_sort Analysis of marginal chipping of monolithic lithium disilicate crowns produced by four CAD-CAM systems
author Strelhow, Samira Sandy Ferreira
author_facet Strelhow, Samira Sandy Ferreira
author_role author
dc.contributor.none.fl_str_mv Valle, Accacio Lins do
dc.contributor.author.fl_str_mv Strelhow, Samira Sandy Ferreira
dc.subject.por.fl_str_mv Adaptação Marginal Dentária
CAD/CAM
CAD/CAM
Cerâmica
Ceramics
Coroas dental
Dental Crowns
Dental Marginal Adaptation
topic Adaptação Marginal Dentária
CAD/CAM
CAD/CAM
Cerâmica
Ceramics
Coroas dental
Dental Crowns
Dental Marginal Adaptation
description Statement of the problem. The marginal integrity of monolithic crowns is an essential factor for longevity. Due to the wide application of CAD/CAM systems, evaluation of production accuracy is of great clinical interest. Purpose. Evaluating the marginal chipping of monolithic lithium disilicate crowns produced by four different CAD-CAM systems. Material and methods. Four CAD-CAM systems were selected: Ceramill (Ceramill Motion 2), Cerec (Cerec inLab MC XL), EDG (CAM5-S1 SmartDent) and Zirkonzahn (M5 Heavy). An artificial lower first molar was prepared for a full crown, duplicated in plaster, scanned and a crown was designed following standardized parameters. Ten lithium disilicate crowns (IPS e.max CAD) per group were milled. Images were obtained using a scanning stereomicroscope Stemi 2000-C (Zeiss), overlapped (Adobe Photoshop CS6 software) and measurents of the marginal perimeter and chipping area were performed (ImageJ software). To evaluate the degree of marginal chipping, the Chipping Factor (CF) of each crown was calculated and the data were subjected to Kruskal-Wallis One-way test followed by Dunns method (p< 0.05). Results. Based on SD and absolute mean values, the CF of Ceramill (14,5 ± 8,3) and Cerec (13,4 ± 9,4) groups was statistically higher than EDG (3,4 ± 1,2) and Zirkonzahn (2,8 ± 1,3). Conclusion. The data demonstrated the influence of selected parameters during the design, parameters settings and manufacturing tools of CAD/CAM systems on the marginal integrity of monolithic crowns.
publishDate 2017
dc.date.none.fl_str_mv 2017-06-06
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 https://www.teses.usp.br/teses/disponiveis/25/25146/tde-08122021-181122/
url https://www.teses.usp.br/teses/disponiveis/25/25146/tde-08122021-181122/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv
dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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