Abstract |
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.
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Authors | Ling Zhang, Li Huang, Yu Xiong, Ming Fang, Ji-Hua Chen, Marco Ferrari |
Journal | European journal of oral sciences
(Eur J Oral Sci)
Vol. 116
Issue 3
Pg. 280-6
(Jun 2008)
ISSN: 1600-0722 [Electronic] England |
PMID | 18471248
(Publication Type: Journal Article)
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Chemical References |
- Dentin-Bonding Agents
- Resin Cements
- Root Canal Irrigants
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Topics |
- Analysis of Variance
- Bicuspid
- Cementation
- Dental Etching
(methods)
- Dental Prosthesis Retention
- Dental Restoration Failure
- Dental Stress Analysis
- Dentin-Bonding Agents
- Humans
- Linear Models
- Post and Core Technique
- Resin Cements
- Root Canal Irrigants
- Root Canal Preparation
(methods)
- Smear Layer
- Statistics, Nonparametric
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