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 language | English (US) |
|---|---|
| Pages (from-to) | 705-713 |
| Number of pages | 9 |
| Journal | Dental Materials |
| Volume | 23 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 1 2007 |
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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
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 journal › Article
}
TY - JOUR
T1 - Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives
AU - Sauro, Salvatore
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
PY - 2007/6/1
Y1 - 2007/6/1
N2 - 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.
AB - 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.
KW - Dentin bonding systems
KW - Hybrid layer
KW - Hydrophilic polymers
KW - Microtensile bond strength
KW - Permeability
KW - SEM
KW - Water droplets
KW - Water uptake
UR - http://www.scopus.com/inward/record.url?scp=34247348690&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247348690&partnerID=8YFLogxK
U2 - 10.1016/j.dental.2006.06.010
DO - 10.1016/j.dental.2006.06.010
M3 - Article
C2 - 16904175
AN - SCOPUS:34247348690
VL - 23
SP - 705
EP - 713
JO - Dental Materials
JF - Dental Materials
SN - 0109-5641
IS - 6
ER -