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Fracture Resistance of Simulated Immature Teeth Reinforced with Different Mineral Aggregate-Based Materials.
Pandolfo, Mariana Travi; Rover, Gabriela; Bortoluzzi, Eduardo Antunes; Teixeira, Cleonice da Silveira; Rossetto, Hebert Luís; Fernades, Paula Cristina Dos Santos Vaz; Côrte-Real, Inês Sansonetty Gonçalves; Carvalho, Sandra Maria Fernandes; Garcia, Lucas da Fonseca Roberti.
Afiliação
  • Pandolfo MT; Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
  • Rover G; Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
  • Bortoluzzi EA; Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
  • Teixeira CDS; Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
  • Rossetto HL; Engineering Center, Federal University of Pelotas, Pelotas, RS, Brazil.
  • Fernades PCDSV; Department of Fixed Prosthesis, School of Dental Medicine, University of Porto, Porto, Portugal.
  • Côrte-Real ISG; Department of Fixed Prosthesis, School of Dental Medicine, University of Porto, Porto, Portugal.
  • Carvalho SMF; CEMMPRE - Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Coimbra, Portugal.
  • Garcia LDFR; CF-UM-UP - Centre of Physics of the Universities of Minho and Porto, Guimarães, Portugal.
Braz Dent J ; 32(3): 21-31, 2021.
Article em En | MEDLINE | ID: mdl-34755787
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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Materiais Restauradores do Canal Radicular / Fraturas dos Dentes Limite: Humans Idioma: En Revista: Braz Dent J Assunto da revista: ODONTOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Materiais Restauradores do Canal Radicular / Fraturas dos Dentes Limite: Humans Idioma: En Revista: Braz Dent J Assunto da revista: ODONTOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil