Effect of sodium hypochlorite on dentin bonding with a polyalkenoic acid-containing adhesive system

Raquel Osorio, Laura Ceballos, Franklin Chi Meng Tay, Miguel A. Cabrerizo-Vilchez, Manuel Toledano

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The purpose of this study was to evaluate the effect of sodium hypochlorite (NaOCl) treatment on dentin bonding by means of contact angle (CA), shear bond strength (SBS), and microleakage (ML) measurements. Ultrastructure and nanoleakage (NL) of the interfaces were examined by transmission electron microscopy (TEM). For CA, SBS, and TEM evaluation, human molars were sectioned to expose dentin surfaces and were either acid-etched (35% H3PO4) or further treated with 5% NaOCl for 2 min before the application of Single Bond adhesive. CAs were measured using the Axisymmetric Drop Shape Analysis technique. The Watanabe testing assembly was used for SBS evaluation. ML was assessed by a dye penetration method. NL was examined using a silver-staining technique. The results showed that CA values decreased after acid etching and even more after NaOCl treatment. NaOCl treatment produced lower SBS than acid-etched dentin. Both ML values and NL manifestations were similar for NaOCl-treated and acid-etched dentin. NaOCl did not completely remove the collagen matrix. NL was manifested along the base of hybrid layers and within the polyalkenoic acid copolymer in both groups. Adverse chemical interactions could have occurred between the remnant collagen matrix and/or mineralized dentin after NaOCl treatment. There is no additional advantage in using NaOCl treatment with this adhesive.

Original languageEnglish (US)
Pages (from-to)316-324
Number of pages9
JournalJournal of Biomedical Materials Research
Volume60
Issue number2
DOIs
StatePublished - Mar 14 2002
Externally publishedYes

Fingerprint

Sodium Hypochlorite
Dentin
Shear Strength
Adhesives
Sodium
Acids
Contact angle
Transmission Electron Microscopy
Collagen
Transmission electron microscopy
Silver Staining
Silver
Etching
Coloring Agents
Copolymers
Dyes
Testing

Keywords

  • Acid etching
  • Adhesion
  • Collagen
  • Dentin
  • Sodium hypochlorite treatment

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biomaterials

Cite this

Effect of sodium hypochlorite on dentin bonding with a polyalkenoic acid-containing adhesive system. / Osorio, Raquel; Ceballos, Laura; Tay, Franklin Chi Meng; Cabrerizo-Vilchez, Miguel A.; Toledano, Manuel.

In: Journal of Biomedical Materials Research, Vol. 60, No. 2, 14.03.2002, p. 316-324.

Research output: Contribution to journalArticle

Osorio, Raquel ; Ceballos, Laura ; Tay, Franklin Chi Meng ; Cabrerizo-Vilchez, Miguel A. ; Toledano, Manuel. / Effect of sodium hypochlorite on dentin bonding with a polyalkenoic acid-containing adhesive system. In: Journal of Biomedical Materials Research. 2002 ; Vol. 60, No. 2. pp. 316-324.
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