The results showed heterogeneity in all comparisons , and higher bond strength to dentin was identified for self-adhesive cements .
Although the articles included in this meta- analysis showed high heterogeneity and high risk of bias , the in vitro literature seems to suggest that use of self-adhesive resin cement could improve the retention of GFPs into root canals
Because there are several ways to cement  glass-fiber posts ( GFPs ) into root canals , there is no consensus on the best strategy to achieve high bond strengths .
A systematic review was conducted to determine if there is difference in bond strength to dentin between regular and self-adhesive resin cements and to verify the influence of several variables on the retention of GFPs .
Bonding effectiveness and sealing ability of fiber-post bonding.
OBJECTIVES To evaluate the push-out bond strength and the sealing ability of five adhesive cements routinely used for fiber-post bonding . METHODS Fifty extracted single-rooted teeth were r and omly divided in five groups and restored using Parapost FiberLux and the following luting agents : Panavia 21 ( PAN ) , Clearfil Esthetic Cement ( CLF ) , Variolink II ( VAR ) , RelyX Unicem ( UNI ) and experimental GC self-adhesive cement ( EGC ) . After 1 week of water storage at 37 degrees C , three sections ( coronal , middle and apical ) of 2 mm thickness were prepared from each specimen . Sealing ability was quantified with a fluid-filtration system ( Flodec ) during 10 min , after which the push-out bond strength was immediately measured . Data were analyzed with ANOVA ( push-out ) and Kruskal-Wallis ( sealing ability ) . RESULTS The push-out bond strength and sealing ability were not significantly different among the coronal , middle and apical sections for each luting agent . The highest push-out bond strength was measured for CLF ( 14.60+/-3.63 MPa ) , which was not significantly different from PAN ( 12.57+/-2.45 MPa ) , but significantly higher than VAR ( 11.09+/-4.09 MPa ) , UNI ( 11.29+/-4.31 MPa ) and EGC ( 7.65+/-4.79 MPa ) . When evaluating the sealing ability , significant differences were not found among PAN , CLF and VAR , and between UNI and EGC . The latter luting agents scored significantly lower than the former ones . The push-out bond strength was correlated to the sealing ability ( p<0.001 ) . SIGNIFICANCE The self-etching MDP-based cements presented the highest push-out bond strength . Although the bonding effectiveness of self-adhesive cements appears promising , their interaction with root dentin might be too weak to minimize microleakage at the post-cement-dentin interface
The results showed heterogeneity in all comparisons , and higher bond strength to dentin was identified for self-adhesive cements .
Although the articles included in this meta- analysis showed high heterogeneity and high risk of bias , the in vitro literature seems to suggest that use of self-adhesive resin cement could improve the retention of GFPs into root canals
Because there are several ways to cement  glass-fiber posts ( GFPs ) into root canals , there is no consensus on the best strategy to achieve high bond strengths .
A systematic review was conducted to determine if there is difference in bond strength to dentin between regular and self-adhesive resin cements and to verify the influence of several variables on the retention of GFPs .