Shear bond strength of tooth-colored indirect restorations bonded to mid-coronal and cervical dentin

Dent Mater J. 2006 Mar;25(1):7-12. doi: 10.4012/dmj.25.7.

Abstract

To investigate the bonding of tooth-colored indirect restorations to cervical dentin, shear bond strengths of bonded resin inlays to cervical dentin and mid-coronal dentin were investigated and compared. Indirectly fabricated composite inlays (Estenia) were cemented with a dual-cured resin cement (Panavia Fluoro Cement II) to either cervical or mid-coronal dentin. Resin cement was cured with or without light irradiation for 20 seconds. After 24-hour or one-week storage, the bonded inlays were subjected to a micro-shear bond test. The light-cure method showed significantly higher bond strengths to both dentin regions compared with the self-cure method. Further, significant improvement in bonding after one-week storage was found in the case of light-cure method rather than the self-cure method. Although the cervical dentin tended to show lower bond strength than mid-coronal dentin, significant difference between the two dentin regions was only found when the resin cement was light-cured and stored for only one day.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Dental Bonding / methods*
  • Dental Restoration Failure*
  • Dentin-Bonding Agents / chemistry
  • Humans
  • Inlays / methods*
  • Shear Strength
  • Statistics, Nonparametric

Substances

  • Dentin-Bonding Agents