The effects of non-thermal plasma and conventional treatments on the bond strength of fiber posts to resin cement.

Autor: do Prado M; Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil., da Silva EM; Analytical Laboratory of Restorative Biomaterials - LABiom-R, School of Dentistry, Federal Fluminense University, Niterói, Brazil., Marques JDN; Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil., Gonzalez CB; Department of Dental Clinics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil., Simão RA; Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Jazyk: angličtina
Zdroj: Restorative dentistry & endodontics [Restor Dent Endod] 2017 May; Vol. 42 (2), pp. 125-133. Date of Electronic Publication: 2017 Apr 11.
DOI: 10.5395/rde.2017.42.2.125
Abstrakt: Objectives: This study compared the effect of hexamethyldisiloxane (HMDSO) and ammonia (NH 3 ) plasmas on the bond strength of resin cement to fiber posts with conventional treatments.
Materials and Methods: Sixty-five fiber posts were divided into 5 groups: Control (no surface treatment); H 2 O 2 (24% hydrogen peroxide for 1 min); Blasting (blasting with aluminum oxide for 30 sec); NH 3 (NH 3 plasma treatment for 3 min); HMDSO (HMDSO plasma treatment for 15 min). After the treatments, the Ambar adhesive (FGM Dental Products) was applied to the post surface ( n = 10). The fiber post was inserted into a silicon matrix that was filled with the conventional resin cement Allcem Core (FGM). Afterwards, the post/cement specimens were cut into discs and subjected to a push-out bond strength (POBS) test. Additionally, 3 posts in each group were evaluated using scanning electron microscopy. The POBS data were analyzed by one-way analysis of variance and the Tukey's honest significant difference post hoc test (α = 0.05).
Results: The Blasting and NH 3 groups showed the highest POBS values. The HMDSO group showed intermediate POBS values, whereas the Control and H 2 O 2 groups showed the lowest POBS values.
Conclusion: Blasting and NH 3 plasma treatments were associated with stronger bonding of the conventional resin cement Allcem to fiber posts, in a procedure in which the Ambar adhesive was used.
Competing Interests: Conflict of Interest: No potential conflict of interest relevant to this article was reported.
Databáze: MEDLINE
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