Long-term bond strength of fiber posts cement to dentin with self-adhesive or conventional resin cements

Autor(es)

Mendes, Monique ; Gomes Franca, Fabiana Mantovani ; Basting, Roberta Tarkany ; Turssi, Cecilia Pedroso ; Botelho do Amaral, Flavia Lucisano

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY; v. 31, n. 9, p. 977-987, 2017.
• Citações Web of Science: 0

Resumo

The aim of this study was to evaluate the immediate and the long-term push-out bond strength of glass fiber posts (GFP) cemented with conventional or self-adhesive dual-curing resin cements, at different root depths. Prior to cementation, the GFP (Reforpost \#3, Angelus) were etched with 37% phosphoric acid for 30 s followed by silane for 1 min. Thirty canine roots were divided into two groups (n = 15) according to resin cement type: ARC - dual resin cement (RelyX ARC/3M ESPE) combined with an three-step etch-and-rinse adhesive (Adper Scotch Bond Multi-Purpose Plus 3M/ESPE) or U200-self-adhesive resin cement (RelyX U200/3M ESPE). The manufacturer's instructions were followed. After 48 h, the roots were cross-sectioned at three different depths, resulting in serial slices corresponding to the cervical, middle, and apical root thirds. Slices were randomly divided into two groups, according to the period of water storage prior to push-out bond strength analysis: 48 h or 180 days. The data (MPa) were analyzed using three-way ANOVA for randomized blocks (p < 0.05), which showed no significant interaction between the three factors (p = 0.716). The main study factors were also proven not significant (cement: p = 0.711; time: 0.288; root third: p = 0.646). In conclusion, root depth, cement type (self-adhesive or conventional), and storage in water for 180 days did not influence the bond strength of GFP to intracanal dentin. (AU)

• Processo FAPESP: 13/18598-0 - Avaliação da resistência de união de pinos de fibra de vidro cimentados com sistemas resinosos dual e autoadesivo à dentina radicular
• Beneficiário: Monique de Medeiros Mendes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica