Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses
Introduction: Cobalt – Chromium alloys have been used for the fabrication of cast frameworks which withstand the dental prostheses, failures that happen during the process of casting, polishing and finishing the framework generate surface quality defects which affect the mechanical properties of den...
- Autores:
-
Mosquera-Palomino, Josefina
Pineda-Higuita, Sonia Elena
Vélez-Gómez, Carlos Ignacio
Restrepo-Holguín, Sebastián
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2017
- Institución:
- Universidad Cooperativa de Colombia
- Repositorio:
- Repositorio UCC
- Idioma:
- spa
- OAI Identifier:
- oai:repository.ucc.edu.co:20.500.12494/9733
- Acceso en línea:
- https://revistas.ucc.edu.co/index.php/od/article/view/1663
https://hdl.handle.net/20.500.12494/9733
- Palabra clave:
- Rights
- openAccess
- License
- Derechos de autor 2017 Revista Nacional de Odontología
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| dc.title.eng.fl_str_mv |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| dc.title.spa.fl_str_mv |
Caracterización de defectos de superficie en estructuras coladas para prótesis dentales en aleación de cobalto cromo |
| dc.title.por.fl_str_mv |
Caracterização de defeitos de superfície em estruturas coladas para próteses dentárias em liga de cobalto-cromo |
| title |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| spellingShingle |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| title_short |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| title_full |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| title_fullStr |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| title_full_unstemmed |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| title_sort |
Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses |
| dc.creator.fl_str_mv |
Mosquera-Palomino, Josefina Pineda-Higuita, Sonia Elena Vélez-Gómez, Carlos Ignacio Restrepo-Holguín, Sebastián |
| dc.contributor.author.none.fl_str_mv |
Mosquera-Palomino, Josefina Pineda-Higuita, Sonia Elena Vélez-Gómez, Carlos Ignacio Restrepo-Holguín, Sebastián |
| description |
Introduction: Cobalt – Chromium alloys have been used for the fabrication of cast frameworks which withstand the dental prostheses, failures that happen during the process of casting, polishing and finishing the framework generate surface quality defects which affect the mechanical properties of dentures. Objective: To characterize the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses by scanning electron microscopy (SEM). Materials and Methods: An experimental study was conducted, where 19 cast frameworks made out of Cobalt – Chrome alloy were conveniently selected. The following variables were taken into account during the casting process: presentation of the alloy, type of centrifugal casting, way of polishing, shining and sanding the framework. Results: The main characteristics observed, by scanning electron microscopy (SEM) analysis, in the cast frameworks for Cobalt – Chrome dental prostheses were: irregularities, superficial heterogeneity, presence of carbon and cracks. There was also found a statistically significant association between the presentation of the alloy and the polishing with shinning and without shinning, with a value of p (0,04). Conclusions: Characterization by scanning electron microscopy (SEM) allows us to detect surface quality defects which generate mechanical failures and damages within medium and long term use, affecting the quality of dental prostheses. |
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2017 |
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2019-05-14T21:13:03Z |
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2019-05-14T21:13:03Z |
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2017-02-06 |
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Artículo |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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http://purl.org/coar/resource_type/c_6501 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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info:eu-repo/semantics/article |
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http://purl.org/redcol/resource_type/ART |
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info:eu-repo/semantics/publishedVersion |
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http://purl.org/coar/resource_type/c_6501 |
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https://revistas.ucc.edu.co/index.php/od/article/view/1663 10.16925/od.v12i24.1663 |
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https://hdl.handle.net/20.500.12494/9733 |
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https://revistas.ucc.edu.co/index.php/od/article/view/1663 https://hdl.handle.net/20.500.12494/9733 |
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10.16925/od.v12i24.1663 |
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spa |
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spa |
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https://revistas.ucc.edu.co/index.php/od/article/view/1663/2015 |
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Derechos de autor 2017 Revista Nacional de Odontología http://creativecommons.org/licenses/by-nc-nd/4.0 |
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info:eu-repo/semantics/openAccess |
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http://purl.org/coar/access_right/c_abf2 |
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Derechos de autor 2017 Revista Nacional de Odontología http://creativecommons.org/licenses/by-nc-nd/4.0 http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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Universidad Cooperativa de Colombia |
| dc.source.eng.fl_str_mv |
Revista Nacional de Odontología; Vol 13 No 24 (2017) |
| dc.source.spa.fl_str_mv |
Revista Nacional de Odontología; Vol. 13 Núm. 24 (2017) |
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Revista Nacional de Odontología; v. 13 n. 24 (2017) |
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2357-4607 1900-3080 |
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Universidad Cooperativa de Colombia |
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Repositorio Institucional Universidad Cooperativa de Colombia |
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bdigital@metabiblioteca.com |
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Mosquera-Palomino, JosefinaPineda-Higuita, Sonia ElenaVélez-Gómez, Carlos IgnacioRestrepo-Holguín, Sebastián2017-02-062019-05-14T21:13:03Z2019-05-14T21:13:03Zhttps://revistas.ucc.edu.co/index.php/od/article/view/166310.16925/od.v12i24.1663https://hdl.handle.net/20.500.12494/9733Introduction: Cobalt – Chromium alloys have been used for the fabrication of cast frameworks which withstand the dental prostheses, failures that happen during the process of casting, polishing and finishing the framework generate surface quality defects which affect the mechanical properties of dentures. Objective: To characterize the surface quality defects in cast frameworks for Cobalt – Chrome dental prostheses by scanning electron microscopy (SEM). Materials and Methods: An experimental study was conducted, where 19 cast frameworks made out of Cobalt – Chrome alloy were conveniently selected. The following variables were taken into account during the casting process: presentation of the alloy, type of centrifugal casting, way of polishing, shining and sanding the framework. Results: The main characteristics observed, by scanning electron microscopy (SEM) analysis, in the cast frameworks for Cobalt – Chrome dental prostheses were: irregularities, superficial heterogeneity, presence of carbon and cracks. There was also found a statistically significant association between the presentation of the alloy and the polishing with shinning and without shinning, with a value of p (0,04). Conclusions: Characterization by scanning electron microscopy (SEM) allows us to detect surface quality defects which generate mechanical failures and damages within medium and long term use, affecting the quality of dental prostheses.Introducción: Las aleaciones dentales de cobalto cromo son empleadas en la elaboración de estructuras coladas que soportan las prótesis dentales, las fallas que se presentan durante el proceso de colado y acabado de la estructura dan origen a defectos de superficie que afectan las propiedades mecánicas de estas. Objetivo: caracterizar los defectos de superficie en las estructuras coladas para prótesis dentales en aleación de cobalto cromo por microscopia electrónica de barrido.Materiales y métodos: se realizó un estudio experimental, donde se seleccionaron a conveniencia, 19 estructuras coladas elaboradas en aleación cobalto cromo. En el proceso de colado se tuvieron en cuenta las siguientes variables: presentación de la aleación, tipo de centrifuga, tipo de pulido, brillado y arenado de la estructura. Resultados: las principales características observadas mediante el análisis por Microscopio Electrónico de Barrido (SEM) en las estructuras coladas para prótesis dentales en aleación de cobalto cromo fueron: irregularidades, heterogeneidad superficial, grietas y presencia de carbono. Se encontró una asociación estadísticamente significativa entre la forma de presentación de la aleación y el pulido con brillo y sin brillo, con valor de p (0,04). Conclusiones: la caracterización por microscopia electrónica de barrido permite detectar defectos de superficie que dan origen a fallas mecánicas y deterioros con el uso a mediano y largo plazo, afectando la calidad de las prótesis dentales.Introdução: as ligas dentárias de cobalto-cromo são empregadas na elaboraçãodas estruturas modeladas que dão suporte às próteses dentárias. As falhas que se apresentam durante o processo de modelagem e acabamento da estrutura dão origem a defeitos de superfície que afetam as propriedades mecânicas dessas próteses. Objetivo: caracterizar os defeitos de superfície nas estruturas modeladas para próteses dentárias em liga de cobalto-cromo por microscopia eletrônica de varredura. Métodos: foi realizado um estudo experimental, no qual foram selecionadas, por conveniência, 19 estruturas modeladas elaboradas em liga de cobalto-cromo. No processo de modelagem, levou-se em consideração as seguintes variáveis: apresentação da liga, tipo de centrífuga, tipo de polimento, brilho ejateamento de areia da estrutura. Resultados: as principais características observadas mediante a análise por microscópio eletrônico de varredura (sem) nas estruturas modeladas para próteses dentárias em liga de cobalto-cromo foram: irregularidades, heterogeneidade superficial, fendas e presença de carbono. Encontrou-se uma associação estatisticamente significativa entre a forma de apresentação da liga e o polimento com brilho e sem brilho, com valor de p (0,04). Conclusões: a caracterização por microscopia eletrônica de varredura permite detectar defeitos de superfície que dão origem a falhas mecânicas e deterioraçõescom o uso a médio e longo prazo, o qual afeta a qualidade das próteses dentárias.application/pdfspaUniversidad Cooperativa de Colombiahttps://revistas.ucc.edu.co/index.php/od/article/view/1663/2015Derechos de autor 2017 Revista Nacional de Odontologíahttp://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Revista Nacional de Odontología; Vol 13 No 24 (2017)Revista Nacional de Odontología; Vol. 13 Núm. 24 (2017)Revista Nacional de Odontología; v. 13 n. 24 (2017)2357-46071900-3080Characterization of the surface quality defects in cast frameworks for Cobalt – Chrome dental prosthesesCaracterización de defectos de superficie en estructuras coladas para prótesis dentales en aleación de cobalto cromoCaracterização de defeitos de superfície em estruturas coladas para próteses dentárias em liga de cobalto-cromoArtículohttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionPublication20.500.12494/9733oai:repository.ucc.edu.co:20.500.12494/97332024-07-16 13:34:00.984metadata.onlyhttps://repository.ucc.edu.coRepositorio Institucional Universidad Cooperativa de Colombiabdigital@metabiblioteca.com |