The effects of non-thermal plasma and conventional treatments on the bond strength of fiber posts to resin cement.
10.5395/rde.2017.42.2.125
- Author:
Maíra DO PRADO
1
;
Eduardo Moreira DA SILVA
;
Juliana das Neves MARQUES
;
Caroline Brum GONZALEZ
;
Renata Antoun SIMÃO
Author Information
1. Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. maira@metalmat.ufrj.br
- Publication Type:Original Article
- Keywords:
Bonding;
Fiber post;
Plasma gas;
Surface treatment
- MeSH:
Adhesives;
Aluminum Oxide;
Ammonia;
Hydrogen Peroxide;
Microscopy, Electron, Scanning;
Plasma*;
Resin Cements*;
Silicon
- From:Restorative Dentistry & Endodontics
2017;42(2):125-133
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: This study compared the effect of hexamethyldisiloxane (HMDSO) and ammonia (NH₃) 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); H₂O₂ (24% hydrogen peroxide for 1 min); Blasting (blasting with aluminum oxide for 30 sec); NH₃ (NH₃ 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 NH₃ groups showed the highest POBS values. The HMDSO group showed intermediate POBS values, whereas the Control and H₂O₂ groups showed the lowest POBS values. CONCLUSION: Blasting and NH₃ 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.
