Document Detail

Effect of different surface treatments on the push-out bond strength of fiber post to root canal dentin.
MedLine Citation:
PMID:  19615650     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this study was to evaluate the effects of different surface treatments on the bond strength of a fiber post to dentin. STUDY DESIGN: Sixty extracted human maxillary incisor teeth were manually shaped with K-files using the step-back technique. ISO size 45 files were used as master apical files. Post spaces were prepared and then the root canals were subjected to one of the following 5 surface treatments: irrigation with 5% sodium hypochlorite (NaOCl); treatment with ethanol, ethyl acetate, and acetone-based cleansing agent (Sikko Tim); irrigation with 17% EDTA; etching with 37% orthophosphoric acid for 15 seconds; and etching with 10% citric acid for 15 seconds. Fiber posts were luted using self-etching/self-priming dual polymerized resin cement. From the coronal part of each root, 3 slides of 0.6-mm thickness were obtained. A push-out bond strength test was performed by a universal testing machine at a crosshead speed of 0.5 mm/min. Dentin surfaces were examined under scanning electron microscopy (SEM) after different surface treatments. Data were analyzed with a one-way analysis of variance (ANOVA) and Tukey HSD test. RESULTS: ANOVA revealed that canal surface treatment affected the bond strength (P < .001). The highest bond strength was obtained in the Sikko Tim group. The results also showed that surface treatment methods increased the bond strength to dentin when compared with the control group. CONCLUSIONS: Sikko Tim group was the more effective surface treatment agent compared with EDTA, orthophosphoric acid, citric acid, and control groups; however, it could not remove the smear layer and sealer remnants effectively on radicular dentin surfaces. Removal of the smear layer and opening of dentinal tubules are not recommended when a self-etching/self-priming adhesive system is used.
Ebru Ozsezer Demiryürek; Safak Külünk; Duygu Saraç; Gözde Yüksel; Bilinç Bulucu
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics     Volume:  108     ISSN:  1528-395X     ISO Abbreviation:  Oral Surg Oral Med Oral Pathol Oral Radiol Endod     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-07-20     Completed Date:  2009-11-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9508562     Medline TA:  Oral Surg Oral Med Oral Pathol Oral Radiol Endod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e74-80     Citation Subset:  D; IM    
Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
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MeSH Terms
Acid Etching, Dental / methods
Analysis of Variance
Dental Bonding*
Dental Pulp Cavity / chemistry,  drug effects
Dental Stress Analysis
Dentin / chemistry,  drug effects*,  ultrastructure
Dentin-Bonding Agents / chemistry*,  therapeutic use
Post and Core Technique / instrumentation*
Root Canal Irrigants / chemistry,  therapeutic use
Root Canal Preparation / instrumentation,  methods*
Smear Layer
Statistics, Nonparametric
Surface Properties
Reg. No./Substance:
0/Dentin-Bonding Agents; 0/Root Canal Irrigants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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