The available evidence indicated that the coronal region of the root canal bonded better to the glass fiber post  than apical regions .
Phosphoric acid , hydrogen peroxide , and silane application enhance post ’s retentiveness .
In light of the current evidence , surface treatment strategies increase the bond strength of glass fiber post to dentine .
However , recommendations for st and ardized testing methods and reporting of future clinical studies are required to maintain clinical ly relevant information and to underst and the effects of various surface treatment of glass fiber post  and their bond strength with dentine walls of the root canal
The objective of this systematic review was to determine the influence of surface treatment of glass fiber posts  on bond strength to dentine .
Failure of fiber posts after cementation with different adhesives with or without silanization investigated by pullout tests and scanning electron microscopy.
INTRODUCTION The aim of the study was to test retentive forces of different adhesive systems after cementation of glass-fiber posts with or without prior silanization of the post by using a pullout test and scanning electron microscope ( SEM ) observation to detect the mode of failure . METHODS Fifty-six roots were r and omly divided into 6 experimental and 2 control groups : ParaCore ( PAR ) , Paracore + silane ( PAR-SIL ) , RelyX Unicem ( RXU ) , RelyX Unicem + silane ( RXU-SIL ) , RelyX ARC ( RXA ) , RelyX ARC + silane ( RXA-SIL ) , negative control ( NEG-CON ) , and positive control ( POS-CON ) . ParaCore posts were placed in the experimental groups ( each n = 8) by using an adhesive resin with or without prior silanization . NEG-CON received uncemented posts ( n = 4 ) ; POS-CON received an active screw post with an adhesive ( n = 4 ) . All sample s were subjected to a pullout test in a universal mechanical testing machine for pullout tests and SEM to assess the fiber posts and the roots after the tests . RESULTS Mean failure load values for each ground were PAR 247.4 ± 59.3 N , PAR-SIL 240.5 ± 68.8 N , RXU 102.3 ± 22.8 N , RXU-SIL 106.4 ± 19.8 N , RXA 119.8 ± 27.3 N , RXA-SIL 125.8 ± 28.3 N , NEG-CON 0 ± 0 N , and POS-CON 412.9 ± 27.4 N. There was a statistically significant difference between the 3 experimental adhesive systems ( P < .001 ) and between each experimental group and NEG-CON and POS-CON ( P < .05 ) . PAR was significantly different from RXU and RXA ( P < .05 ) . No statistically significant differences existed between RXU and RXA and between the use of silanization or not . Representative sample s for SEM showed cohesive failure as the principal fracture mode for PAR and mainly adhesive failure for RXU and RXA . CONCLUSIONS The results indicated that silanization of fiber posts does not make a difference to prevent dislocation of a post . Full-etching systems demonstrated significantly higher retentive forces than self-etching systems
The available evidence indicated that the coronal region of the root canal bonded better to the glass fiber post  than apical regions .
Phosphoric acid , hydrogen peroxide , and silane application enhance post ’s retentiveness .
In light of the current evidence , surface treatment strategies increase the bond strength of glass fiber post to dentine .
However , recommendations for st and ardized testing methods and reporting of future clinical studies are required to maintain clinical ly relevant information and to underst and the effects of various surface treatment of glass fiber post  and their bond strength with dentine walls of the root canal
The objective of this systematic review was to determine the influence of surface treatment of glass fiber posts  on bond strength to dentine .