Niobium pentoxide as a novel filler for dental adhesive resin

J Dent. 2013 Feb;41(2):106-13. doi: 10.1016/j.jdent.2012.04.022. Epub 2012 May 4.

Abstract

Objectives: The purpose of this study was to develop an adhesive resin with incorporation of niobium pentoxide and evaluate its properties.

Methods: Niobium pentoxide was characterised by X-ray diffraction, surface area, particle size, micro-Raman, scanning electron microscopy and the effectiveness of silanisation process by Fourier Transform Infrared (FTIR). An experimental adhesive resin was formulated with 0, 5, 10 and 20wt% Nb(2)O(5). The formulated adhesive resins were evaluated based on microhardness, degree of conversion, radiopacity and interface (resin/dentine) characterisation by micro-Raman.

Results: The particles used in this study presented a monoclinic crystalline phase with typical chemical groups and micrometre mean size. Microhardness and radiopacity increased with higher amounts of Nb(2)O(5), and the particles were able to penetrate into the hybrid layers.

Conclusions: Therefore, Nb(2)O(5) may be an alternative for polymer-based biomaterials.

Clinical significance: Niobium pentoxide could be used to produce adhesive resins with enhanced properties.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acid Etching, Dental / methods
  • Animals
  • Bisphenol A-Glycidyl Methacrylate / chemistry
  • Camphor / analogs & derivatives
  • Camphor / chemistry
  • Cattle
  • Contrast Media / chemistry
  • Crystallography
  • Dental Bonding
  • Dentin / ultrastructure
  • Hardness
  • Methacrylates / chemistry
  • Microscopy, Electron, Scanning
  • Microspectrophotometry
  • Niobium / chemistry*
  • Oxides / chemistry*
  • Particle Size
  • Polyethylene Glycols / chemistry
  • Polymerization
  • Polymethacrylic Acids / chemistry
  • Refractometry
  • Resin Cements / chemistry*
  • Silanes / chemistry
  • Spectroscopy, Fourier Transform Infrared
  • Spectrum Analysis, Raman
  • Surface Properties
  • Temperature
  • Time Factors
  • X-Ray Diffraction
  • para-Aminobenzoates / chemistry

Substances

  • Contrast Media
  • Methacrylates
  • Oxides
  • Polymethacrylic Acids
  • Resin Cements
  • Silanes
  • para-Aminobenzoates
  • Niobium
  • triethylene glycol dimethacrylate
  • methacryloxypropyltrimethoxysilane
  • Polyethylene Glycols
  • Bisphenol A-Glycidyl Methacrylate
  • hydroxyethyl methacrylate
  • Camphor
  • ethyl 4-dimethylaminobenzoate
  • niobium pentoxide
  • camphorquinone