Abstract
Objective This study evaluated the influence of different mechanical and chemical surface treatments alone and combined with silane on the bond strength (BS) of glass fiber posts (GFPs) using self-adhesive resin cement. Methods Eighty-four single-rooted bovine teeth (six groups, n = 14) were submitted to BS analysis after GFP cementation. The treatments applied in the studied groups were no surface treatment (control), silane (S), 24% hydrogen peroxide (PER), 24% hydrogen peroxide and silane (PER + SIL), blasting with 50 μm aluminum oxide particles (BLAST), and blasting with 50 μm aluminum oxide particles and silane (BLAST + SIL). Results BS differed significantly among groups (p < 0.001). It was higher in the SIL (10.5 ± 3.5 MPa), BLAST + SIL (11.5 ± 3.2 MPa), and PER + SIL (11.6 ± 4.6 MPa) groups than in the control (6.5 ± 2.9 MPa), BLAST (8.6 ± 4.0 MPa), and PER (7.1 ± 2.8 MPa) groups, with no significant difference among groups receiving silanization. Cement post adhesive failure was more common in the SIL, BLAST, and PER + SIL groups, and cement-dentin adhesive failure was more common in the control, BLAST + SIL, and PER groups. Conclusion These results show that silane application alone increases BS.
Highlights
Lairds Rodrigues dos Santos,1 Darlon Martins Lima,1,2 Edilausson Moreno Carvalho,1 Vandilson Pinheiro Rodrigues,1,3 and Claudia Maria Coelho Alves 1,4
Cement post adhesive failure was more common in the SIL, blasting with μm aluminum oxide particles (BLAST), and PER + SIL groups, and cement-dentin adhesive failure was more common in the control, BLAST + SIL, and PER groups
Retention of the post in the root canal depends on the bond strength (BS) at different parts of the dentin-cement interface, as loss of retention of this type of post is more common than root fracture [2,3,4]
Summary
Effect of Glass Fiber Post Surface Treatment on Bond Strength of a Self-Adhesive Resin Cement: An “In Vitro” Study. Is study evaluated the influence of different mechanical and chemical surface treatments alone and combined with silane on the bond strength (BS) of glass fiber posts (GFPs) using self-adhesive resin cement. E roughness produced on the post surface with mechanical (e.g., blasting) [14, 16] or chemical (e.g., application of hydrogen peroxide) methods [16, 17] has been shown to improve the retention of GFPs fixed with resin cement by removing the matrix layer of epoxy resin and increasing the area of contact with the fibers that will be silanized [18, 19]. E null hypothesis was that the application of silane alone and in combination with other chemical and mechanical treatments would not improve the BS at the postresin cement interface
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