Premium
Effect of post‐space treatment on retention of fiber posts in different root regions using two self‐etching systems
Author(s) -
Zhang Ling,
Huang Li,
Xiong Yu,
Fang Ming,
Chen JiHua,
Ferrari Marco
Publication year - 2008
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.2008.00536.x
Subject(s) - fiber , etching (microfabrication) , collagen fiber , space (punctuation) , dentistry , materials science , chemistry , nanotechnology , computer science , medicine , composite material , anatomy , operating system , layer (electronics)
The effect of post‐space treatment on the retention of fiber posts in different root regions was evaluated using two self‐etching systems. Post spaces were prepared in extracted premolars and then the root canals were subjected to one of the following post‐space treatments: (i) water irrigation (control); (ii) etching with 35% phosphoric acid for 30 s; (iii) irrigation with 17% EDTA followed by 5.25% sodium hypochlorite (NaOCl); and (iv) ultrasonic agitation associated with 17% EDTA and 5.25% NaOCl irrigating solutions. The dentin surfaces were examined under scanning electron microscopy (SEM) after different post‐space treatments. Fiber posts were then luted in the treated roots using resin cement with either Clearfil SE Bond or Clearfil DC Bond, and the thin‐slice push‐out test was performed. Scanning electron microscopy showed that all the post‐space treatments tested were effective in removal of the smear layer of debris, or sealer/gutta‐percha remnants, on the root canal. The apical push‐out strength was affected by post‐space treatment. Both 35% phosphoric acid etching and ultrasonic agitation in combination with EDTA/NaOCl irrigation improved the apical push‐out strength of the fiber post, regardless of the type of self‐etching system. A solo irrigation with an EDTA/NaOCl solution resulted in a lower apical push‐out strength compared with the other two experimental groups.