Microtensile bond strength between a UDMA fiber post and different resin cements: Effect of pre-surface treatment
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Data
2016-12-01
Autores
Roperto, Renato Cassio
Porto, Thiago Soares
Lang, Lisa
Teich, Sorin
Weber, Sean
El-Mowafy, Omar
Porto-Neto, Sizenando Toledo [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Japanese Soc Dental Materials Devices
Resumo
During a fiber post cementation, bonding failure often occurs at the junction between the fiber-post and resin-cement. Because this failure requires better characterization, we evaluated if different post surface treatment can affect the bond strength of urethane dimethacrylate (UDMA) fiber-posts with resin-cements. Three groups were created: Gl: no treatment/silane; G2: ethyl alcohol (96(o) GL)/silane; G3: 24% H2O2/silane and further divided into four subgroups: I-Unicem/3MESPE; II-BisCem/Bisco; III-Panavia SA/Kuraray and IV-DuoLink/Bisco. Blocks of cured resin cements and posts placed in the center were serially cut into bar-shaped specimens and loaded into a micro tensile testing machine. ANOVA indicated no significant differences among post surface treatments (p>0.05), however, significant within the resin cements (p<0.05) and the interaction of both (p<0.05). The G3/IV showed the highest bond strength values. SEM showed that surface treatments on UDMA fiber posts presented no benefits in terms of surface roughness, thus, should not be performed.
Descrição
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Adhesion, Fiber-posts, Resin-cements
Como citar
Dental Materials Journal. Tokyo: Japanese Soc Dental Materials Devices, v. 35, n. 6, p. 923-928, 2016.