Effect of instrumentation techniques, irrigants solutions and artificial accelerated aging on fiberglass post bond strength to intraradicular dentine
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Data
2015
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Resumo
Objective: To evaluate the effect of instrumentation techniques,
irrigant solutions and specimen aging on fiberglass posts bond
strength to intraradicular dentine.
Materials and methods: A total of 120 bovine teeth were
prepared and randomized into control and experimental groups
resulting from three study factors (instrumentation techniques,
irrigant solutions, specimen aging). Posts were cemented with
RelyX U100. Samples were submitted to push-out test and
failure mode was evaluated under a confocal microscope.
Results: In specimens submitted to water artificial aging,
nickel-titanium rotary instruments group presented higher bond
strength values in apical third irrigated with NaOCl or chlorhexidine.
Irrigation with NaOCl resulted in higher bond strength than ozonated water. Artificial aging resulted in significant bond
strength increase. Adhesive cement-dentin failure was prevalent
in all the groups.
Conclusion: Root canal preparation with NiTi instruments
associated with NaOCl irrigation and ethylenediaminetetra
acetic acid (EDTA) increased bond strength of fiberglass posts
cemented with self-adhesive resin cement to intraradicular
dentine. Water artificial aging significantly increased postretention.Clinical significance: The understanding of factors that may
influence the optimal bond between post-cement and cementdentin
are essential to the success of endodontically treated
tooth restoration.
Descrição
Palavras-chave
Aging, Root dentin, Bond strength, Fiberglass post, Irrigant
Citação
SANTANA, Fernanda Ribeiro Santana et al. Effect of instrumentation techniques, irrigants solutions and artificial accelerated aging on fiberglass post bond strength to intraradicular dentine. The Journal of Contemporary Dental Practice, New Delhi, v. 16, n. 7, p. 523-530, 2015.