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 .
Effects of silane application on luting fiber posts using self-adhesive resin cement.
PURPOSE To evaluate the effects of different glass-fiber post surface treatments on the bond strength to root dentin . MATERIAL S AND METHODS Fifty bovine incisors were used in this study . After removing the crowns , the teeth were endodontically treated . The roots were r and omly divided into five groups according to post surface treatment . The groups were as follows : CO ( Control ) - no treatment ; G1 - RelyX Ceramic Primer ( silane ) only ; G2 - silane and Solobond M ; G3 - silane and Scotchbond Adhesive ; G4 - silane and Excite . For post cementation , RelyX Unicem was used according to the manufacturer 's recommendation and the roots were stored in a light-proof container with 100 % relative humidity for 24 h. The specimens were transversally sectioned . Subsequently , the cervical , middle , and apical regions of the root were positioned in a push-out device and tested at 0.5 mm/min using a universal testing machine ( Instron ) . The data were statistically analyzed with two-way ANOVA and Tukey 's post-hoc test . The fractured specimens were then observed under a stereoscopic loupe at 60X magnification . RESULTS No significant difference in bond strength was found among the groups that received a silane or silane plus an adhesive system ( p > 0.05 ) . However , the CO ( no silane ) showed the lowest bond strength . Regarding G1 , G2 , G3 , and G4 , the cervical region of the root canal attained better bond strengths than did the middle or apical regions . The most frequent failure mode occurred at the cement/dentin interface . CONCLUSION Silane application may be necessary to improve the adhesion of fiber posts luted with the self-adhesive resin cement evaluated here . The application of an adhesive layer between the fiber post and resin cement did not have any influence on the bond strength when the silane coupling was previously used
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 .