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Objectives. The objective of this study was to evaluate the effects of sandblasting combined with silanization as a surface treatment on the bond strength between fiber posts and resin cement. Methods and materials. Twenty-eight fiber posts were divided into 4 groups (n=7) according to different surface treatments: no pretreatment (as control); sandblasting; silanization; and sandblasting combined with silanization. A two-component dual-cured resin cement was mixed and applied to the posts to produce cylindrical specimens. After polymerization, 5 specimens of each group were sectioned into sticks and subjected to a micro-tensile bond strength test. Statistical analysis was performed using one-way and two-way ANOVA at a significance level set at p<0.05. The other 2 specimens of each group were sectioned into slabs and observed under SEM to evaluate the bonding interface. The surfaces of fiber posts with or without sandblasting were also observed. Results. The mean bond strength values (MPa) and SDs of the test groups were as follows: 6.18±4.72, 17.40±9.00, 11.63±6.05, 21.86±8.38. Both surface treatments significantly improved the bond strength between fiber post and resin cement (p<0.05), there was no difference between the effect of sandblasting alone and sandblasting combined with silanization (p>0.05). SEM observation confirmed that sandblasting roughened the surface of the fiber post, and all specimens showed a good integrity at the bonding interface