DC FieldValueLanguage
dc.contributor.authorKoldehoff, Jasmin-
dc.contributor.authorSchneider, Gerold A.-
dc.date.accessioned2021-04-21T08:11:50Z-
dc.date.available2021-04-21T08:11:50Z-
dc.date.issued2021-05-
dc.identifier.citationMaterialia 16: 101088 (2021-05)de_DE
dc.identifier.issn2589-1529de_DE
dc.identifier.urihttp://hdl.handle.net/11420/9341-
dc.description.abstractTo investigate and quantify the influence of the proteins in dental enamel on the mechanical behavior different deproteinization treatments were carried out and their effect on the mechanical properties was studied. Dental enamel samples were deproteinized chemically using KOH solution and H O containing bleaching agent and by heat-treatment in a temperature range of 200–600°C in air and N atmosphere. The organic content was measured by TGA mass loss. Additionally, FTIR, NCHS elemental analysis and HPLC were used to confirm the removal of organic material. The chemical treatments resulted in a smaller mass loss during TGA (decrease by 0.55 w% for KOH) as well as a lower amount of total organic carbon (TOC) and amino acids (about 50% less TOC for both) compared to the untreated sample, thereby confirming successful deproteinization. The structure of the treated samples was investigated by SEM and TEM and compared to untreated samples. While chemical treatments leave the hierarchical structure of the enamel intact, temperatures >300°C lead to sintering of the enamel crystallites. This change in structure correlates with an increased hardness and elastic modulus of heated samples (up to 58% and 17% respectively for 300°C compared to the untreated sample). The removal of the proteins by chemical means has no major effect on the elastic modulus and hardness. As previous studies have suggested, the main influence on the mechanical properties of dental enamel is the intertwining structure of the enamel crystallites. 2 2 2en
dc.language.isoende_DE
dc.relation.ispartofMaterialiade_DE
dc.subjectDental enamelde_DE
dc.subjectHierarchical structurede_DE
dc.subjectMechanical propertiesde_DE
dc.subjectProteinsde_DE
dc.titleEffect of deproteinization treatments on the structure and mechanical properties of dental enamelde_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishTo investigate and quantify the influence of the proteins in dental enamel on the mechanical behavior different deproteinization treatments were carried out and their effect on the mechanical properties was studied. Dental enamel samples were deproteinized chemically using KOH solution and H O containing bleaching agent and by heat-treatment in a temperature range of 200–600°C in air and N atmosphere. The organic content was measured by TGA mass loss. Additionally, FTIR, NCHS elemental analysis and HPLC were used to confirm the removal of organic material. The chemical treatments resulted in a smaller mass loss during TGA (decrease by 0.55 w% for KOH) as well as a lower amount of total organic carbon (TOC) and amino acids (about 50% less TOC for both) compared to the untreated sample, thereby confirming successful deproteinization. The structure of the treated samples was investigated by SEM and TEM and compared to untreated samples. While chemical treatments leave the hierarchical structure of the enamel intact, temperatures >300°C lead to sintering of the enamel crystallites. This change in structure correlates with an increased hardness and elastic modulus of heated samples (up to 58% and 17% respectively for 300°C compared to the untreated sample). The removal of the proteins by chemical means has no major effect on the elastic modulus and hardness. As previous studies have suggested, the main influence on the mechanical properties of dental enamel is the intertwining structure of the enamel crystallites. 2 2 2de_DE
tuhh.publisher.doi10.1016/j.mtla.2021.101088-
tuhh.publication.instituteKeramische Hochleistungswerkstoffe M-9de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume16de_DE
dc.relation.projectUntersuchung des Deformations- und Bruchverhaltens der hierarchischen Ebenen von Zahnschmelzde_DE
dc.identifier.scopus2-s2.0-85104092691-
tuhh.container.articlenumber101088de_DE
local.status.inpressfalsede_DE
local.publisher.peerreviewedfalsede_DE
datacite.resourceTypeJournal Article-
datacite.resourceTypeGeneralText-
item.mappedtypeArticle-
item.openairetypeArticle-
item.languageiso639-1en-
item.grantfulltextnone-
item.cerifentitytypePublications-
item.creatorOrcidKoldehoff, Jasmin-
item.creatorOrcidSchneider, Gerold A.-
item.creatorGNDKoldehoff, Jasmin-
item.creatorGNDSchneider, Gerold A.-
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
crisitem.project.funderDeutsche Forschungsgemeinschaft (DFG)-
crisitem.project.funderid501100001659-
crisitem.project.funderrorid018mejw64-
crisitem.project.grantnoSCHN 372/18-2-
crisitem.author.deptKeramische Hochleistungswerkstoffe M-9-
crisitem.author.deptKeramische Hochleistungswerkstoffe M-9-
crisitem.author.orcid0000-0002-4422-7819-
crisitem.author.orcid0000-0001-5780-6249-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
Appears in Collections:Publications without fulltext
Show simple item record

Page view(s)

98
Last Week
0
Last month
5
checked on Feb 5, 2023

SCOPUSTM   
Citations

1
Last Week
0
Last month
0
checked on Jun 29, 2022

Google ScholarTM

Check

Add Files to Item

Note about this record

Cite this record

Export

Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.