Influence of radiopaque fillers on physicochemical properties of a model epoxy resin-based root canal sealer
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 andMethods:
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. .
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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