Influence of nanofiller loading level on shear bond strength fatigue limit of a MMA-based resin cement

DOI
  • TANOUE Naomi
    Nagasaki University Hospital
  • YANAGIDA Hiroaki
    Department of Fixed Prosthetic Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences
  • MINAMI Hiroyuki
    Department of Fixed Prosthetic Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences

Bibliographic Information

Other Title
  • MMA 系レジンセメントへのナノフィラー添加がせん断疲労限度に及ぼす影響

Search this article

Abstract

This study investigated the influence of the nanofiller loading level on the shear bond strength (SBS) fatigue limit of a methyl methacrylate (MMA)-based cement. A silver-palladium-copper-gold alloy disk was air-abraded and conditioned with a primer for noble metals. Hydrophobic fumed silica nanofillers (average particle size 7 nm) were added to 4-methacryloyloxyethyl trimellitate anhydride/MMA monomer in the following percentages (wt%): R0 = 0%; R1 = 1%; R3 = 3% and R5 = 5%. The monotonic SBS to the disk of the cement polymerized after mixing each monomer, polyMMA powder, and catalyst was determined after thermocycling. A conventional composite cement was used as a control (RelyX Unicem Clicker: RX). A staircase approach was used to determine the SBS fatigue limit of each material. After thermocycling, specimens were submitted to either 10,000 cycles (5 Hz) until adhesive failure, or until specimen fracture, and the minimum number of specimens tested for each material was 15. The SBSs of R3 and R5 were significantly lower than those of the other three cements, and the SBS fatigue limit of R5 was the lowest. The addition of more than 3 wt% of nanofiller to the monomer caused a significant deterioration in the SBS fatigue limit.

Journal

  • Adhesive Dentistry

    Adhesive Dentistry 33 (1), 1-5, 2015

    Japan Society for Adhesive Dentistry

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top