Permeability of dentin to adhesive agents

David Henry Pashley, Bernard Ciucchi, Hidehiko Sano, Jack A. Homer

Research output: Contribution to journalArticlepeer-review

374 Scopus citations

Abstract

The permeability of dentin to adhesive agents is of crucial importarice in ohiaining good dentinal bonding. In those systems that remove the smear layer, the opportunity exists for resin to infiltrare both tubules and intertubular dentin. Resin penetration into tubules can effectively seal the tubules and can contribute to bond strength if the resin bonds to the tubule wall. Resin infiltration into intertubular dentin can only occur if the mineral phase ofdetitin is removed by acidic conditioners or chelators. This is more easily accomplished in fractured dentin than in smear layer-covered dentin because oJ the residual collagen debris that remains on the surface following acid etching of smear layers. The channels for resin infiltration are the perifibrillar spaces created around the collagen fibers of dentin following removal of apatite mineral hy acids. The diffusion of adhesive resi)is through these narrow, tortuous, long channels in 1 to 2 minutes offers a number of challenges that require further research.

Original languageEnglish (US)
Pages (from-to)618-631
Number of pages14
JournalQuintessence International
Volume24
Issue number9
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Dentistry(all)

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