Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Dental Science |
Texto Completo: | https://ojs.ict.unesp.br/index.php/cob/article/view/3562 |
Resumo: | Objective: The selective laser melting (SLM) technique used in manufacturing results in a rougher surface that requires more satisfying processing than conventional hand-finishing operations. The electro discharge machine (EDM) has various possibilities in the adjustment of surfaces. The present study assesses whether the participation of the EDM technique with the conventional finishing and polishing methods enables surface improvement for the Cobalt- Chromium alloy fabricated by SLM. Material and Methods: Twenty discs of cobalt chromium alloy were fabricated by SLM, divided equally into two groups: (TF) control group for finishing and polishing in the conventional method in accordance with the manufacturer’s recommendations; and (EF) group for conducting polishing incorporating the EDM method. Results: The EF group recorded the lowest mean value of surface roughness and the highest mean value of micro hardness compared to the TF group. Furthermore, statistically significant differences (P < 0.05) were found for surface roughness as well as micro hardness. Conclusion: Reliance of the electric discharge machine proactively within finishing and polishing procedures promotes competence in the conventional polishing method and improves the surface properties of cobalt chromium alloy printed by SLM technology. KEYWORDS Dental finishing; Cobalt-chromium alloy; Selective laser melting; Electric discharge machine; Additive manufacturing. |
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oai:ojs.pkp.sfu.ca:article/3562 |
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UNESP-20 |
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Brazilian Dental Science |
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|
spelling |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDMObjective: The selective laser melting (SLM) technique used in manufacturing results in a rougher surface that requires more satisfying processing than conventional hand-finishing operations. The electro discharge machine (EDM) has various possibilities in the adjustment of surfaces. The present study assesses whether the participation of the EDM technique with the conventional finishing and polishing methods enables surface improvement for the Cobalt- Chromium alloy fabricated by SLM. Material and Methods: Twenty discs of cobalt chromium alloy were fabricated by SLM, divided equally into two groups: (TF) control group for finishing and polishing in the conventional method in accordance with the manufacturer’s recommendations; and (EF) group for conducting polishing incorporating the EDM method. Results: The EF group recorded the lowest mean value of surface roughness and the highest mean value of micro hardness compared to the TF group. Furthermore, statistically significant differences (P < 0.05) were found for surface roughness as well as micro hardness. Conclusion: Reliance of the electric discharge machine proactively within finishing and polishing procedures promotes competence in the conventional polishing method and improves the surface properties of cobalt chromium alloy printed by SLM technology. KEYWORDS Dental finishing; Cobalt-chromium alloy; Selective laser melting; Electric discharge machine; Additive manufacturing.Institute of Science and Technology of São José dos Campos2023-05-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.ict.unesp.br/index.php/cob/article/view/356210.4322/bds.2023.e3562Brazilian Dental Science; Vol. 26 No. 2 (2023): Apr - Jun / 2023 - Published Mar 2023Brazilian Dental Science; v. 26 n. 2 (2023): Apr - Jun / 2023 - Published Mar 20232178-6011reponame:Brazilian Dental Scienceinstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESPenghttps://ojs.ict.unesp.br/index.php/cob/article/view/3562/4628Copyright (c) 2023 Brazilian Dental Scienceinfo:eu-repo/semantics/openAccessAl Nuaimi, Mahmood Abdulla AhmadHummudi, Israa Mohammed2023-06-13T17:03:30Zoai:ojs.pkp.sfu.ca:article/3562Revistahttp://bds.ict.unesp.br/PUBhttp://ojs.fosjc.unesp.br/index.php/index/oaisergio@fosjc.unesp.br||sergio@fosjc.unesp.br2178-60112178-6011opendoar:2023-06-13T17:03:30Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)false |
dc.title.none.fl_str_mv |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
title |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
spellingShingle |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM Al Nuaimi, Mahmood Abdulla Ahmad |
title_short |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
title_full |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
title_fullStr |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
title_full_unstemmed |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
title_sort |
Evaluation of EDM inclusion into the conventional polishing of printed Co-Cr alloy by selective laser melting: Conventional polishing aided by EDM |
author |
Al Nuaimi, Mahmood Abdulla Ahmad |
author_facet |
Al Nuaimi, Mahmood Abdulla Ahmad Hummudi, Israa Mohammed |
author_role |
author |
author2 |
Hummudi, Israa Mohammed |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Al Nuaimi, Mahmood Abdulla Ahmad Hummudi, Israa Mohammed |
description |
Objective: The selective laser melting (SLM) technique used in manufacturing results in a rougher surface that requires more satisfying processing than conventional hand-finishing operations. The electro discharge machine (EDM) has various possibilities in the adjustment of surfaces. The present study assesses whether the participation of the EDM technique with the conventional finishing and polishing methods enables surface improvement for the Cobalt- Chromium alloy fabricated by SLM. Material and Methods: Twenty discs of cobalt chromium alloy were fabricated by SLM, divided equally into two groups: (TF) control group for finishing and polishing in the conventional method in accordance with the manufacturer’s recommendations; and (EF) group for conducting polishing incorporating the EDM method. Results: The EF group recorded the lowest mean value of surface roughness and the highest mean value of micro hardness compared to the TF group. Furthermore, statistically significant differences (P < 0.05) were found for surface roughness as well as micro hardness. Conclusion: Reliance of the electric discharge machine proactively within finishing and polishing procedures promotes competence in the conventional polishing method and improves the surface properties of cobalt chromium alloy printed by SLM technology. KEYWORDS Dental finishing; Cobalt-chromium alloy; Selective laser melting; Electric discharge machine; Additive manufacturing. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-05-03 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/3562 10.4322/bds.2023.e3562 |
url |
https://ojs.ict.unesp.br/index.php/cob/article/view/3562 |
identifier_str_mv |
10.4322/bds.2023.e3562 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/3562/4628 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Brazilian Dental Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 Brazilian Dental Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
dc.source.none.fl_str_mv |
Brazilian Dental Science; Vol. 26 No. 2 (2023): Apr - Jun / 2023 - Published Mar 2023 Brazilian Dental Science; v. 26 n. 2 (2023): Apr - Jun / 2023 - Published Mar 2023 2178-6011 reponame:Brazilian Dental Science instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Brazilian Dental Science |
collection |
Brazilian Dental Science |
repository.name.fl_str_mv |
Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
sergio@fosjc.unesp.br||sergio@fosjc.unesp.br |
_version_ |
1800214394620084224 |