Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/101070
DC Field | Value | Language |
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dc.contributor.author | Pandolfo, Mariana Travi | - |
dc.contributor.author | Rover, Gabriela | - |
dc.contributor.author | Bortoluzzi, Eduardo Antunes | - |
dc.contributor.author | Teixeira, Cleonice da Silveira | - |
dc.contributor.author | Rossetto, Hebert Luís | - |
dc.contributor.author | Fernades, Paula Cristina Dos Santos Vaz | - |
dc.contributor.author | Côrte-Real, Inês Sansonetty Gonçalves | - |
dc.contributor.author | Carvalho, Sandra Maria Fernandes | - |
dc.contributor.author | Garcia, Lucas da Fonseca Roberti | - |
dc.date.accessioned | 2022-07-29T11:43:38Z | - |
dc.date.available | 2022-07-29T11:43:38Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 1806-4760 | pt |
dc.identifier.issn | 0103-6440 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/101070 | - |
dc.description.abstract | This study assessed the fracture resistance of simulated immature teeth reinforced with calcium aluminate cement (CAC) or mineral trioxide aggregate (MTA) containing calcium carbonate nanoparticles (nano-CaCO3). The microstructural arrangement of the cements and their chemical constitution were also evaluated. Forty-eight canines simulating immature teeth were distributed into 6 groups (n=8): Negative control - no apical plug or root canal filling; CAC - apical plug with CAC; CAC/nano-CaCO3 - apical plug with CAC+5% nano-CaCO3; MTA - apical plug with MTA; MTA/nano-CaCO3 - apical plug with MTA+5% nano-CaCO3; and Positive control - root canal filling with MTA. The fracture resistance was evaluated in a universal testing machine. Samples of the cements were analyzed under Scanning Electron Microscope (SEM) to determine their microstructural arrangement. Chemical analysis of the cements was performed by Energy Dispersive X-ray Spectroscopy (EDS). The fracture resistance of CAC/nano-CaCO3 was significantly higher than the negative control (p<0.05). There was no significant difference among the other groups (p>0.05). Both cements had a more regular microstructure with the addition of nano-CaCO3. MTA samples had more calcium available in soluble forms than CAC. The addition of nano-CaCO3 to CAC increased the fracture resistance of teeth in comparison with the non-reinforced teeth. The microstructure of both cements containing nano-CaCO3 was similar, with a more homogeneous distribution of lamellar- and prismatic-shaped crystals. MTA had more calcium available in soluble forms than CAC. | pt |
dc.description.abstract | Este estudo avaliou a resistência à fratura de dentes imaturos simulados reforçados com cimento de aluminato de cálcio (CAC) ou trióxido agregado mineral (MTA) contendo nanopartículas de carbonato de cálcio (nano-CaCO3). O arranjo microestrutural dos cimentos e sua constituição química também foram avaliados. Quarenta e oito caninos simulando dentes imaturos foram distribuídos em 6 grupos (n=8): Controle negativo - sem plug apical ou obturação do canal radicular; CAC - plug apical com CAC; CAC/nano-CaCO3 - plug apical com CAC + 5% nano-CaCO3; MTA - plug apical com MTA; MTA/nano-CaCO3 - plug apical com MTA + 5% nano-CaCO3; e Controle positivo - obturação dos canais radiculares com MTA. A resistência à fratura foi avaliada em máquina universal de ensaios. Amostras dos cimentos foram analisadas em Microscópio Eletrônico de Varredura (MEV) para determinar seu arranjo microestrutural. A análise química dos cimentos foi realizada por Espectroscopia de Energia Dispersiva de Raio-X (EDS). A resistência à fratura de CAC/nano-CaCO3 foi significativamente maior do que o controle negativo (p<0,05). Não houve diferença significativa entre os outros grupos (p>0,05). Ambos os cimentos apresentaram microestrutura mais regular com a adição de nano-CaCO3. As amostras de MTA apresentaram mais cálcio disponível em formas solúveis do que CAC. A adição de nano-CaCO3 ao CAC aumentou a resistência à fratura dos dentes em comparação aos dentes não reforçados. A microestrutura de ambos os cimentos contendo nano-CaCO3 foi semelhante, com uma distribuição mais homogênea de cristais de formato lamelar e prismático. MTA apresentou mais cálcio disponível nas formas solúveis do que CAC. | pt |
dc.language.iso | eng | pt |
dc.relation | HEALTHYDENT (co-financed via FEDER [PT2020], POCI-01-0145-FEDER-030708 and FCT [PIDDAC]) | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Immature Teeth | pt |
dc.subject | Calcium Aluminate Cement | pt |
dc.subject | Silicate Cement | pt |
dc.subject | Calcium Carbonate | pt |
dc.subject | Fracture Resistance | pt |
dc.subject.mesh | Aluminum Compounds | pt |
dc.subject.mesh | Calcium Compounds | pt |
dc.subject.mesh | Dental Cements | pt |
dc.subject.mesh | Drug Combinations | pt |
dc.subject.mesh | Humans | pt |
dc.subject.mesh | Oxides | pt |
dc.subject.mesh | Root Canal Obturation | pt |
dc.subject.mesh | Silicates | pt |
dc.subject.mesh | Tooth Apex | pt |
dc.subject.mesh | Root Canal Filling Materials | pt |
dc.subject.mesh | Tooth Fractures | pt |
dc.title | Fracture Resistance of Simulated Immature Teeth Reinforced with Different Mineral Aggregate-Based Materials | pt |
dc.type | article | - |
degois.publication.firstPage | 21 | pt |
degois.publication.lastPage | 31 | pt |
degois.publication.issue | 3 | pt |
degois.publication.title | Brazilian Dental Journal | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1590/0103-6440202104236 | pt |
degois.publication.volume | 32 | pt |
dc.date.embargo | 2021-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.grantfulltext | open | - |
item.fulltext | Com Texto completo | - |
item.openairetype | article | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
crisitem.author.researchunit | CEMMPRE - Centre for Mechanical Engineering, Materials and Processes | - |
crisitem.author.orcid | 0000-0002-3643-4973 | - |
Appears in Collections: | I&D CEMMPRE - Artigos em Revistas Internacionais |
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Fracture-resistance-of-simulated-immature-teeth-reinforced-with-different-mineral-aggregate-based-materialsBrazilian-Dental-Journal.pdf | 3.34 MB | Adobe PDF | View/Open |
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