Diffusion-induced water movement within resin-dentin bonds during bonding

Masanori Hashimoto, Franklin R. Tay, Hidehiko Sano, Masayuki Kaga, David H. Pashley

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


It is thought that water-filled channels and nanovoids in resin-dentin bonds represent potential sites for degradation of bonds or hydrolysis of collagen or both. How water gains access to bonded interfaces is not clear. This study evaluated the diffusion-induced water uptake through resin-dentin interfaces during bonding. Two light-cured total-etch adhesive systems (Excite and One-Step Plus) and a chemical-cured adhesive (Amalgambond Plus) were used in this study. Dentin disks were placed in a split-chamber device, and the fluid movement across dentin was measured, with and without a physiological pressure, during bonding procedures and 24 h after bonding. For light-cured adhesives in the experimental groups, a 6 min interval of dark storage was conducted prior to light-curing, to evaluate the diffusion of water through the uncured resin monomers, and to test the effect of prolonged infiltration time of adhesives on water permeability of bonds. Prolonged adhesive infiltration reduced the water permeability of resin-dentin bonds for light-cured adhesives. Water gradients produced by bonding systems contribute to water movement across the dentin-adhesive interfaces during bonding procedures. Differences in chemical formulations for adhesive systems may lead to differences in the extent of diffusion-induced water movement and the amount of water within the resin-dentin bonds.

Original languageEnglish (US)
Pages (from-to)453-458
Number of pages6
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Issue number2
StatePublished - Nov 2006
Externally publishedYes


  • Adhesion
  • Hydrophilic
  • Hydrophobic
  • Permeability
  • Polymerization

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering


Dive into the research topics of 'Diffusion-induced water movement within resin-dentin bonds during bonding'. Together they form a unique fingerprint.

Cite this