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Influence of radiopaque fillers on physicochemical properties of a model epoxy resin-based root canal sealer
COLLARES, Fabricio Mezzomo; KLEIN, Mariana; SANTOS, Paula Dapper; PORTELLA, Fernando Freitas; OGLIARI, Fabricio; LEITUNE, Vicente Castelo Branco; SAMUEL, Susana Maria Werner.
  • COLLARES, Fabricio Mezzomo; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • KLEIN, Mariana; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • SANTOS, Paula Dapper; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • PORTELLA, Fernando Freitas; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • OGLIARI, Fabricio; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • LEITUNE, Vicente Castelo Branco; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
  • SAMUEL, Susana Maria Werner; Universidade Federal do Rio Grande do Sul. School of Dentistry. Department of Conservative Dentistry. Dental Materials Laboratory. Porto Alegre. BR
J. appl. oral sci ; 21(6): 533-539, Nov-Dec/2013. tab, graf
Artigo em Inglês | LILACS, BBO | ID: lil-697806
ABSTRACT

Objective:

To verify the influence of radiopaque fillers on an epoxy resin-based sealer. Material and

Methods:

Experimental sealers were formulated by adding 20%, 40%, 60%, 80%, 100% and 120% of calcium tungstate, ytterbium trifluoride or barium sulphate by weight to an epoxy-resin-base. Setting time, flow, film thickness, radiopacity, sorption, solubility, pH and push-out bond strength were evaluated.

Results:

The setting time ranged from 373 to 612.66 min, the flow varied from 13.81±0.49 to 22.49±0.37 mm, and the film thickness ranged from 16.67±5.77 to 33.33±11.54 µm. The lowest pH was 5.47±0.53, and the highest was 6.99±0.03. Radiopacity varied from 0.38±0.04 to 2.57±0.21 mmAl and increased with the amount of filler. Calcium tungstate sealers had a higher sorption and solubility than other sealers. There was no significant difference in the push-out bond strength among the fillers at the 120% concentration.

CONCLUSION:

The inorganic fillers evaluated and their concentrations affect the physicochemical properties of an epoxy resin-based root canal sealer. .
Assuntos


Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Materiais Restauradores do Canal Radicular / Colagem Dentária / Resinas Epóxi Tipo de estudo: Estudos de avaliação / Estudo prognóstico Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2013 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Universidade Federal do Rio Grande do Sul/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Materiais Restauradores do Canal Radicular / Colagem Dentária / Resinas Epóxi Tipo de estudo: Estudos de avaliação / Estudo prognóstico Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2013 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Universidade Federal do Rio Grande do Sul/BR