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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison of Different Dentin Pretreatment Protocols on the Bond Strength of Glass Fiber Post Using Self-etching Adhesive

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Author(s):
Martinho, Frederico C. [1] ; Talge Carvatho, Claudio Antonio [1] ; Oliveira, Luciane D. [1] ; Farias de Lacerda, Ana Julia [1] ; Carvalho Xavier, Ana Claudia [1] ; Augusto, Marina Gullo [1] ; Zanatta, Rayssa Ferreira [1] ; Pucci, Cesar Rogerio [1]
Total Authors: 8
Affiliation:
[1] State Univ Sao Paulo, Dept Restorat Dent, Endodont Div, Sao Jose dos Campos Dent Sch, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF ENDODONTICS; v. 41, n. 1, p. 83-87, JAN 2015.
Web of Science Citations: 12
Abstract

Introduction: This study compared the influence of different irrigants with and without ultrasound or laser irradiation on the bond strength of glass fiber posts using a self-etching adhesive in a supplementary dentin pretreatment. Methods: Ninety bovine incisor roots were divided into 3 groups according to the irrigant tested: 2% chlorhexidine (CHX) (n = 30); 2.5% sodium hypochlorite (NaOCl) (n = 30), and saline solution (control) (n = 30). Each group was randomly divided into 3 subgroups according to the supplementary dentin pretreatment: ultrasound, Nd:YAG laser, and nonsupplemented (control). A self-etching adhesive system (Futurabond DC; VOCO GmbH, Cuxhaven, Germany) was used, and the glass fiber posts were cemented with dual-cure epoxy-based luting agent (Bifix QM, VOCO GmbH). All roots were sectioned transversely, and the push-out test was performed. Failure mode analysis was also evaluated. Results: Bond strength decreased significantly after the use of 2.5% NaOCl in all root thirds (P < .05). CHX showed no difference in the mean bond strength value compared with saline solution (P > .05). The supplementary dentin pretreatment using the Nd:YAG laser or ultrasound did not improve the bond strength values for both NaOCl and CHX (P > .05). Moreover, the apical third exhibited the lowest mean bond strength values (P < .05). Analysis indicated that the predominant failure mode was the mixed type.. Conclusions: Regardless of the irrigant used, the supplementary dentin pretreatment with ultrasound or laser irradiation showed no improvement in bond strength. Also, the use of NaOCl decreased the bond strength of glass fiber posts using a self-etching adhesive system, whereas CHX preserved it. (AU)

FAPESP's process: 12/19536-5 - Investigation of potential biomarkers for ventilator-associated pneumina in intensive care unit patients under invasive mechanical ventilation
Grantee:Frederico Canato Martinho
Support Opportunities: Regular Research Grants