Evaluation of a porosity measurement method for wet calcium phosphate cements

The porosity of a calcium phosphate cement is a key parameter as it affects several important properties of the cement. However, a successful, non-destructive porosity measurement method that does not include drying has not yet been reported for calcium phosphate cements. The aim of this study was t...

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Detalles Bibliográficos
Autores: Ajaxon, Ingrid, Maazouz, Yassine, Ginebra Molins, Maria Pau|||0000-0002-4700-5621, Ohman, Caroline, Persson, Cecilia
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/85341
Acceso en línea:https://hdl.handle.net/2117/85341
https://dx.doi.org/10.1177/0885328215594293
Access Level:acceso abierto
Palabra clave:Hydroxyapatite
Bone cements
Calcium phosphate
bone cement
porosity
solvent exchange
brushite
hydroxyapatite
Fosfat de calci
Hidroxiapatita
Ciments ossis
Àrees temàtiques de la UPC::Enginyeria dels materials
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oai_identifier_str oai:upcommons.upc.edu:2117/85341
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repository_id_str
spelling Evaluation of a porosity measurement method for wet calcium phosphate cementsAjaxon, IngridMaazouz, YassineGinebra Molins, Maria Pau|||0000-0002-4700-5621Ohman, CarolinePersson, CeciliaHydroxyapatiteBone cementsCalcium phosphateCalcium phosphatebone cementporositysolvent exchangebrushitehydroxyapatiteFosfat de calciHidroxiapatitaCiments ossisÀrees temàtiques de la UPC::Enginyeria dels materialsThe porosity of a calcium phosphate cement is a key parameter as it affects several important properties of the cement. However, a successful, non-destructive porosity measurement method that does not include drying has not yet been reported for calcium phosphate cements. The aim of this study was to evaluate isopropanol solvent exchange as such a method. Two different types of calcium phosphate cements were used, one basic (hydroxyapatite) and one acidic (brushite). The cements were allowed to set in an aqueous environment and then immersed in isopropanol and stored under three different conditions: at room temperature, at room temperature under vacuum (300¿mbar) or at 37¿. The specimen mass was monitored regularly. Solvent exchange took much longer time to reach steady state in hydroxyapatite cements compared to brushite cements, 350 and 18¿h, respectively. Furthermore, the immersion affected the quasi-static compressive strength of the hydroxyapatite cements. However, the strength and phase composition of the brushite cements were not affected by isopropanol immersion, suggesting that isopropanol solvent exchange can be used for brushite calcium phosphate cements. The main advantages with this method are that it is non-destructive, fast, easy and the porosity can be evaluated while the cements remain wet, allowing for further analysis on the same specimenPeer Reviewed20152015-01-0120162016-04-07journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/85341https://dx.doi.org/10.1177/0885328215594293reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/853412026-05-27T15:37:01Z
dc.title.none.fl_str_mv Evaluation of a porosity measurement method for wet calcium phosphate cements
title Evaluation of a porosity measurement method for wet calcium phosphate cements
spellingShingle Evaluation of a porosity measurement method for wet calcium phosphate cements
Ajaxon, Ingrid
Hydroxyapatite
Bone cements
Calcium phosphate
Calcium phosphate
bone cement
porosity
solvent exchange
brushite
hydroxyapatite
Fosfat de calci
Hidroxiapatita
Ciments ossis
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Evaluation of a porosity measurement method for wet calcium phosphate cements
title_full Evaluation of a porosity measurement method for wet calcium phosphate cements
title_fullStr Evaluation of a porosity measurement method for wet calcium phosphate cements
title_full_unstemmed Evaluation of a porosity measurement method for wet calcium phosphate cements
title_sort Evaluation of a porosity measurement method for wet calcium phosphate cements
dc.creator.none.fl_str_mv Ajaxon, Ingrid
Maazouz, Yassine
Ginebra Molins, Maria Pau|||0000-0002-4700-5621
Ohman, Caroline
Persson, Cecilia
author Ajaxon, Ingrid
author_facet Ajaxon, Ingrid
Maazouz, Yassine
Ginebra Molins, Maria Pau|||0000-0002-4700-5621
Ohman, Caroline
Persson, Cecilia
author_role author
author2 Maazouz, Yassine
Ginebra Molins, Maria Pau|||0000-0002-4700-5621
Ohman, Caroline
Persson, Cecilia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Hydroxyapatite
Bone cements
Calcium phosphate
Calcium phosphate
bone cement
porosity
solvent exchange
brushite
hydroxyapatite
Fosfat de calci
Hidroxiapatita
Ciments ossis
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Hydroxyapatite
Bone cements
Calcium phosphate
Calcium phosphate
bone cement
porosity
solvent exchange
brushite
hydroxyapatite
Fosfat de calci
Hidroxiapatita
Ciments ossis
Àrees temàtiques de la UPC::Enginyeria dels materials
description The porosity of a calcium phosphate cement is a key parameter as it affects several important properties of the cement. However, a successful, non-destructive porosity measurement method that does not include drying has not yet been reported for calcium phosphate cements. The aim of this study was to evaluate isopropanol solvent exchange as such a method. Two different types of calcium phosphate cements were used, one basic (hydroxyapatite) and one acidic (brushite). The cements were allowed to set in an aqueous environment and then immersed in isopropanol and stored under three different conditions: at room temperature, at room temperature under vacuum (300¿mbar) or at 37¿. The specimen mass was monitored regularly. Solvent exchange took much longer time to reach steady state in hydroxyapatite cements compared to brushite cements, 350 and 18¿h, respectively. Furthermore, the immersion affected the quasi-static compressive strength of the hydroxyapatite cements. However, the strength and phase composition of the brushite cements were not affected by isopropanol immersion, suggesting that isopropanol solvent exchange can be used for brushite calcium phosphate cements. The main advantages with this method are that it is non-destructive, fast, easy and the porosity can be evaluated while the cements remain wet, allowing for further analysis on the same specimen
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
2016
2016-04-07
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/85341
https://dx.doi.org/10.1177/0885328215594293
url https://hdl.handle.net/2117/85341
https://dx.doi.org/10.1177/0885328215594293
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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