Eight-year randomized clinical evaluation of Class II nanohybrid resin composite restorations bonded with a one-step self-etch or a two-step etch-and-rinse adhesive

Clin Oral Investig. 2015 Jul;19(6):1371-9. doi: 10.1007/s00784-014-1345-8. Epub 2014 Oct 31.

Abstract

Objectives: The aim of this study is to observe the durability of Class II nanohybrid resin composite restorations, placed with two different adhesive systems, in an 8-year follow-up.

Methods: Seventy-eight participants received at random at least two Class II restorations of the ormocer-based nanohybrid resin composite (Ceram X) bonded with either a one-step self-etch adhesive (Xeno III) or a control two-step etch-and-rinse adhesive (Excite). The 165 restorations were evaluated using slightly modified United States Public Health Services (USPHS) criteria at baseline and then yearly during 8 years.

Results: One hundred and fifty-eight restorations were evaluated after 8 years. Three participants with five restorations (three Xeno III, two Excite) were registered as dropouts. Twenty-one failed restorations (13.3%) were observed during the follow-up. Twelve in the one-step self-etch adhesive group (13.5%) and nine in the two-step etch-and-rinse group (13.0%). This resulted in nonsignificant different annual failure rates of 1.69 and 1.63%, respectively. Fracture of restoration was the main reason for failure.

Conclusion: Good clinical performance was shown during the 8-year evaluation and no significant difference in overall clinical performance between the two adhesives. Fracture was the main reason for failure.

Clinical relevance: The one-step self-etch adhesive showed a good long-term clinical effectiveness in combination with the nanohybrid resin composite in Class II restorations.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acid Etching, Dental / methods*
  • Adult
  • Aged
  • Aged, 80 and over
  • Composite Resins / chemistry*
  • Denmark
  • Dental Bonding / methods*
  • Dental Restoration Failure
  • Dental Restoration, Permanent / methods*
  • Dentin-Bonding Agents
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Methacrylates
  • Middle Aged
  • Nanostructures / chemistry

Substances

  • CeramX
  • Composite Resins
  • Dentin-Bonding Agents
  • Excite cement
  • Methacrylates
  • Xeno III