In conclusion , this review suggests that the use of NaOCl/EDTA results in the retention of FGPs and may thus be recommended as a post-space cleaning method influencing the luting procedure
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts ( FGPs ) .
Currently , there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation .
This systematic review involved " in vitro " studies to investigate if cleaning methods of the root canal after post-space preparation can increase the retention of FGPs evaluated by the push-out test .
Effect of Intracanal Irrigants on Bond Strength of Fiber Posts Cemented With a Self-adhesive Resin Cement.
OBJECTIVE The aim of this study was to evaluate the effect of five intracanal irrigants on bond strength of fiber posts cemented with newer self-adhesive resin cement . METHODS A total of 60 extracted , single-rooted human premolars , sectioned at 14 mm , were prepared with the ProTaper Universal system with a size F3 instrument and filled with an F3 master cone and AH Plus . The root canal filling was partially removed , leaving 4 mm of apical gutta-percha . Specimens were r and omly assigned to five groups ( n=12 ) , according to the solution used for dentin surface treatment before fiber post cementation , as follows : EDTA 17 % ( EDTA ) ; QMix ( QM ) ; SmearClear ( SC ) ; 2.5 % sodium hypochlorite ( NaOCl ) , and 0.9 % saline solution ( SS ) . Ultrasonic activation was performed ( three times , 20 seconds each ) , and root canals were dried with paper points . Fiber posts were cemented with RelyX U200 . In one specimen per group , rhodamine B dye was mixed with RelyX U200 to provide adequate fluorescence for confocal laser scanning microscopy ( CLSM ) assessment . Specimens were transversally sectioned and three slices were obtained , one for each root third . Next , a push-out test was performed . A stereomicroscope and CLSM were used to analyze the failure modes and to illustrate the pattern of infiltration of RelyX U200 into dentinal tubules , respectively . Bond strength means were calculated , and analysis of variance and Bonferroni tests were used for statistical analysis . RESULTS SS showed the highest mean bond strength values ( 11.5±5.3 ) , superior to QM ( 5.1±3.1 ) and SC ( 5.1±3.3 ) . NaOCl presented intermediary bond strength values ( 9.7±5.0 ) , similar to EDTA ( 7.7±2.9 ) and SS . QM and SC showed the lowest mean bond strength ( p<0.05 ) . Adhesive failures between cement/dentin were predominant ( 53.9 % ) . CONCLUSION SS and NaOCl associated with ultrasonic activation seem to be adequate solutions for root canal cleaning before fiber post cementation with self-adhesive resin cement , whereas chelating solutions , such as EDTA , QM , and SC , cause a decrease in bond strength
In conclusion , this review suggests that the use of NaOCl/EDTA results in the retention of FGPs and may thus be recommended as a post-space cleaning method influencing the luting procedure
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts ( FGPs ) .
Currently , there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation .
This systematic review involved " in vitro " studies to investigate if cleaning methods of the root canal after post-space preparation can increase the retention of FGPs evaluated by the push-out test .