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In vitro assessment of the influence of sodium hypochlorite, chlorhexidine gel and ethanol on the bond strength and adhesive longevity using different bond systems.

Grant number: 09/05183-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): July 01, 2009
Effective date (End): December 31, 2010
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal researcher:Caio Cezar Randi Ferraz
Grantee:Doglas Cecchin
Home Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil


This study aims to evaluate in vitro the influence of two chemical substances auxiliary to the endodontic treatment (5.25% sodium hypochlorite, 2% chlorhexidine gluconate) and the use of ethanol before the use of different adhesive systems (Clearfil SE Bond or Scotchbond Multi Purpose) on (1) bond strength and (2) adhesion longevity of fiber glass post model with composite resin to intrarradicular dentin. Besides that, it aims to check the real importance of the collagen fibers in this adhesion. The samples will be subjected to mechanical test extrusion by push out, after immersion in water in intervals of 1 day and 1 year. To control the hydrolysis collagen, part of the sample, corresponding to the period of 1 year, will be immersed in mineral oil. Subsequently, the mode of fracture will be examined by scanning electron microscopy and classified into: adhesive (resin dentin interface); or cohesive (in dentin, hybrid layer, resin or mixed). The results will be analyzed statistically.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CECCHIN, DOGLAS; AFFONSO DE ALMEIDA, JOSE FLAVIO; GOMES, BRENDA P. F. A.; ZAIA, ALEXANDRE AUGUSTO; RANDI FERRAZ, CAIO CESAR. Effect of Chlorhexidine and Ethanol on the Durability of the Adhesion of the Fiber Post Relined with Resin Composite to the Root Canal. JOURNAL OF ENDODONTICS, v. 37, n. 5, p. 678-683, . (09/05183-0, 10/00100-7)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CECCHIN, Doglas. Influence of gel chlorexidine, ethanol and sodium hypoclorite on the bond strenght to root dentin and adhesive durability of the fiber post relined with resin composite. 2010. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.

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