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 .
Influence of laser irradiation on fiber post retention
The purpose of this in vitro study was to compare the bond strength between fiber post and laser-treated root canals . Forty single-rooted bovine teeth were endodontically treated and r and omly divided into four groups of equal size according to the root canal treatment : group 1 conventional treatment ( without laser irradiation ) ; group 2 Nd : YAG laser ( 1.5 W , 10 Hz , 100 mJ ) ; group 3 Er , Cr : YSGG laser ( 0.75 W , 20 Hz ) ; and group 4 Nd : YAG + Er , Cr : YSGG lasers . The fiber posts were cemented with an adhesive system + resin cement , in accordance with the manufacturer ’s instructions . A mini acrylic pipe was fixed on the coronal section of the post using a light-polymerized resin . Specimens were mounted on an acrylic pipe with a self-polymerized resin . Retention forces were determined using a universal testing machine ( 0.5 mm/min ) . Data were analyzed using one-way ANOVA and Tukey tests ( p < 0.05 ) . The post retention force in group 2 was found to be lower than that in the other experimental groups . Fractures were observed at the interface between the dentin and the resin in all groups . High-intensity lasers can be used in conventional endodontic treatment ; however , root canal surface irradiation using the Nd : YAG laser was shown to negatively affect the post retention force
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 .