Durability of resin-dentin bonds to water- vs. ethanol-saturated dentin

K. Hosaka, Y. Nishitani, J. Tagami, M. Yoshiyama, W. W. Brackett, K. A. Agee, F. R. Tay, D. H. Pashley

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

Higher 24-hour resin-dentin bond strengths are created when ethanol is used to replace water during wet bonding. This in vitro study examined if ethanol-wet-bonding can increase the durability of resin-dentin bonds over longer times. Five increasingly hydrophilic experimental resin blends were bonded to acid-etched dentin saturated with water or ethanol. Following composite build-ups, the teeth were reduced into beams for 24-hour microtensile bond strength evaluation, and for water-aging at 37°C for 3, 6, or 12 months before additional bond strength measurements. Although most bonds made to water-saturated dentin did not change over time, those made to ethanol-saturated dentin exhibited higher bond strengths, and none of them fell over time. Decreased collagen fibrillar diameter and increased interfibrillar spacing were seen in hybrid layers created with ethanol-wet-bonding. Increases in bond strength and durability in ethanol-wet-bonding may be due to higher resin uptake and better resin sealing of the collagen matrix, thereby minimizing endogenous collagenolytic activities.

Original languageEnglish (US)
Pages (from-to)146-151
Number of pages6
JournalJournal of Dental Research
Volume88
Issue number2
DOIs
StatePublished - Aug 10 2009

Keywords

  • Dentin bonding
  • Durability
  • Ethanol
  • Hydrophilicity

ASJC Scopus subject areas

  • Dentistry(all)

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    Hosaka, K., Nishitani, Y., Tagami, J., Yoshiyama, M., Brackett, W. W., Agee, K. A., Tay, F. R., & Pashley, D. H. (2009). Durability of resin-dentin bonds to water- vs. ethanol-saturated dentin. Journal of Dental Research, 88(2), 146-151. https://doi.org/10.1177/0022034508328910