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An In Vitro Assessment of Gutta-Percha Coating of New Carrier-Based Root Canal Fillings

Alhashimi, Raghad Abdulrazzaq ; Foxton, Richard ; Romeed, Shihab ; Deb, Sanjukta Plotino, G. ; Pameijer, C. H. ; Velasco-Ortega, E.

TheScientificWorld, 2014-01, Vol.2014, p.239754-6 [Periódico revisado por pares]

United States: Hindawi Publishing Corporation

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  • Título:
    An In Vitro Assessment of Gutta-Percha Coating of New Carrier-Based Root Canal Fillings
  • Autor: Alhashimi, Raghad Abdulrazzaq ; Foxton, Richard ; Romeed, Shihab ; Deb, Sanjukta
  • Plotino, G. ; Pameijer, C. H. ; Velasco-Ortega, E.
  • Assuntos: Biomedical materials ; Bond strength ; Bridges ; Composite materials ; Dentistry ; Equipment and supplies ; Fillings (Dentistry) ; Gutta-Percha - chemistry ; Hydroxyapatite ; Hypotheses ; Materials ; Root Canal Filling Materials - chemistry ; Root Canal Obturation ; Root canal therapy ; Studies ; X-Ray Microtomography
  • É parte de: TheScientificWorld, 2014-01, Vol.2014, p.239754-6
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Academic Editors: C. H. Pameijer, G. Plotino, and E. Velasco-Ortega
  • Descrição: The first aim of this paper was to evaluate the push-out bond strength of the gutta-percha coating of Thermafil and GuttaCore and compare it with that of gutta-percha used to coat an experimental hydroxyapatite/polyethylene (HA/PE) obturator. The second aim was to assess the thickness of gutta-percha around the carriers of GuttaCore and HA/PE obturators using microcomputed tomography (μCT). Ten (size 30) 1 mm thick samples of each group (Thermafil, GuttaCore, and HA/PE) were prepared. An orthodontic wire with a diameter of 0.5 mm was attached to the plunger of an Instron machine in order to allow the push-out testing of the gutta-percha coating. Five samples of (GuttaCore and HA/PE) were scanned using μCT. The data obtained were analysed with one-way analysis of variance and Tukey post hoc test. HA/PE obturators exhibited significantly higher push-out bond strength ( P < 0.001 ) determined at 6.84 ± 0.96 than those of Guttacore around 3.75 ± 0.75 and Thermafil at 1.5 ± 0.63. GuttaCore demonstrated significantly higher bond strength than Thermafil ( P < 0.001 ). μCT imaging revealed that the thickness of gutta-percha around the experimental HA/PE carrier was homogeneously distributed. The bondability and thickness of gutta-percha coating around HA/PE carriers were superior to those of GuttaCore and Thermafil obturators.
  • Editor: United States: Hindawi Publishing Corporation
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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