Wear and fatigue behavior of nano-structured dental resin composites

Cecilia P. Turssi, Jack L. Ferracane, Lucas L. Ferracane

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


Theoretically, nano-structured dental resin composites are purported to have increased wear and fatigue resistance compared with microfill composites and may favor the achievement of restoratives with better long-term performance. This study sought to assess the behavior of nano-structured composites resulting from either abrasion and fatigue loading. Ten specimens (12 × 5 × 2.5 mm) were prepared from each of five composites: Ceram-X mono, Filtek Supreme, Grandio, Premise, and Heliomolar (serving as the microfill control). A surface profile was recorded using a three-dimensional profiling system, and the specimens were subjected to 105 cycles of three-body abrasion in the new OHSU oral wear simulator. A second profile was generated and the before and after profiles were fit and analyzed. The volume loss and maximum depth of the wear facet on each specimen were calculated. Another 30 specimens (25 × 2 × 2 mm) were tested for flexural fatigue limit (FFL) in four-point bending via the staircase method. The test was carried out until 104 cycles were completed or until fracturing the specimen. One-way ANOVA and Tukey's test demonstrated greater volumetric loss for Grandio and Ceram-X than that observed for the remaining composites. Kruskal-Wallis and the least significant difference test ascertained that Heliomolar, Grandio, and Supreme showed significantly higher FFL than Ceram-X and Premise. In terms of wear and fatigue resistance, nano-structured composites may perform either similarly or comparatively worse than a microfilled composite.

Original languageEnglish (US)
Pages (from-to)196-203
Number of pages8
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Issue number1
StatePublished - Jul 2006


  • Fatigue
  • Nanotechnology
  • Tribology
  • Wear

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering


Dive into the research topics of 'Wear and fatigue behavior of nano-structured dental resin composites'. Together they form a unique fingerprint.

Cite this