Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives

Salvatore Sauro, David Henry Pashley, Marco Montanari, Stefano Chersoni, Ricardo M. Carvalho, Manuel Toledano, Raquel Osorio, Franklin Chi Meng Tay, Carlo Prati

Research output: Contribution to journalArticle

129 Citations (Scopus)

Abstract

Objectives: Dentin bonds made with one-bottle etch-and-rinse and self-etch adhesives are affected by the formation of interfacial blisters, porosities and deterioration. The first objective of this study was to evaluate the fluid flow through resin-dentin interfaces created by self-etching adhesives applied to deep dentin using a replica technique and by directly measuring dentin permeability (P). The second objective was to examine the effect of intrapulpal pressure on the microtensile bond strength of these adhesives. Methods: A fluid-transport model was used to measure the fluid permeability (%P) through different adhesives. Impressions of bonded dentin were taken with a polyvinylsiloxane impression material to monitor fluid transudation from the surface of the adhesive. Positive replicas were fabricated for SEM examination. Two groups of resin-bonded specimens (pulpal pressure versus no pulpal pressure) were created for microtensile bond strength evaluation. Adhesive application was performed under 0 cm H2O. Pulpal pressure group was submitted to 20 cm H2O of pulpal pressure during build-up procedures. Results: Clearfil Protect Bond exhibited the lowest permeability and fewest numbers of fluid droplets over the surface of the bonded dentin. G-Bond and Clearfil-S3 Bond were more permeable than Clearfil Protect Bond. One Up Bond F was the most permeable adhesive. A highly significant correlation was observed between the relative permeability of these adhesives (%P) and the number of fluid droplets on the adhesive surfaces. The application of pulpal pressure significantly reduced bond strength. Significance: Resin-dentin bonds created by contemporary self-etch adhesives are susceptible to fluid permeation induced by pulpal pressure. HEMA-based adhesives showed the largest reductions in bond strengths after pulpal pressure application.

Original languageEnglish (US)
Pages (from-to)705-713
Number of pages9
JournalDental Materials
Volume23
Issue number6
DOIs
StatePublished - Jun 1 2007

Fingerprint

Dentin Permeability
Adhesives
Adhesion
Pressure
Dentin
Fluids
Permeability
Resins
Replica Techniques
Porosity
Bond strength (materials)
Bottles
Blister
Permeation

Keywords

  • Dentin bonding systems
  • Hybrid layer
  • Hydrophilic polymers
  • Microtensile bond strength
  • Permeability
  • SEM
  • Water droplets
  • Water uptake

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

Cite this

Sauro, S., Pashley, D. H., Montanari, M., Chersoni, S., Carvalho, R. M., Toledano, M., ... Prati, C. (2007). Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives. Dental Materials, 23(6), 705-713. https://doi.org/10.1016/j.dental.2006.06.010

Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives. / Sauro, Salvatore; Pashley, David Henry; Montanari, Marco; Chersoni, Stefano; Carvalho, Ricardo M.; Toledano, Manuel; Osorio, Raquel; Tay, Franklin Chi Meng; Prati, Carlo.

In: Dental Materials, Vol. 23, No. 6, 01.06.2007, p. 705-713.

Research output: Contribution to journalArticle

Sauro, S, Pashley, DH, Montanari, M, Chersoni, S, Carvalho, RM, Toledano, M, Osorio, R, Tay, FCM & Prati, C 2007, 'Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives', Dental Materials, vol. 23, no. 6, pp. 705-713. https://doi.org/10.1016/j.dental.2006.06.010
Sauro S, Pashley DH, Montanari M, Chersoni S, Carvalho RM, Toledano M et al. Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives. Dental Materials. 2007 Jun 1;23(6):705-713. https://doi.org/10.1016/j.dental.2006.06.010
Sauro, Salvatore ; Pashley, David Henry ; Montanari, Marco ; Chersoni, Stefano ; Carvalho, Ricardo M. ; Toledano, Manuel ; Osorio, Raquel ; Tay, Franklin Chi Meng ; Prati, Carlo. / Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives. In: Dental Materials. 2007 ; Vol. 23, No. 6. pp. 705-713.
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abstract = "Objectives: Dentin bonds made with one-bottle etch-and-rinse and self-etch adhesives are affected by the formation of interfacial blisters, porosities and deterioration. The first objective of this study was to evaluate the fluid flow through resin-dentin interfaces created by self-etching adhesives applied to deep dentin using a replica technique and by directly measuring dentin permeability (P). The second objective was to examine the effect of intrapulpal pressure on the microtensile bond strength of these adhesives. Methods: A fluid-transport model was used to measure the fluid permeability ({\%}P) through different adhesives. Impressions of bonded dentin were taken with a polyvinylsiloxane impression material to monitor fluid transudation from the surface of the adhesive. Positive replicas were fabricated for SEM examination. Two groups of resin-bonded specimens (pulpal pressure versus no pulpal pressure) were created for microtensile bond strength evaluation. Adhesive application was performed under 0 cm H2O. Pulpal pressure group was submitted to 20 cm H2O of pulpal pressure during build-up procedures. Results: Clearfil Protect Bond exhibited the lowest permeability and fewest numbers of fluid droplets over the surface of the bonded dentin. G-Bond and Clearfil-S3 Bond were more permeable than Clearfil Protect Bond. One Up Bond F was the most permeable adhesive. A highly significant correlation was observed between the relative permeability of these adhesives ({\%}P) and the number of fluid droplets on the adhesive surfaces. The application of pulpal pressure significantly reduced bond strength. Significance: Resin-dentin bonds created by contemporary self-etch adhesives are susceptible to fluid permeation induced by pulpal pressure. HEMA-based adhesives showed the largest reductions in bond strengths after pulpal pressure application.",
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AU - Pashley, David Henry

AU - Montanari, Marco

AU - Chersoni, Stefano

AU - Carvalho, Ricardo M.

AU - Toledano, Manuel

AU - Osorio, Raquel

AU - Tay, Franklin Chi Meng

AU - Prati, Carlo

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KW - Permeability

KW - SEM

KW - Water droplets

KW - Water uptake

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