Development and assessment of experimental dental polymers with enhanced polymerisation, crosslink density and resistance to fluid permeability based on ethoxylated-Bisphenol-A-dimethacrylates and 2-Hydroxyethyl methacrylate

Salvatore Sauro*, Sadhvik Vijay, Sanjukta Deb

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The formulation of appropriate dental adhesives is critical to achieve efficient polymerisation and reduced fluid permeability. The aim of this study was to evaluate the degree of conversion, the crosslink density and the fluid permeability of experimental 2-Hydroxy-ethyl methacrylate (HEMA)-containing or HEMA-free resin adhesives formulated with the use of a hydrophilic ternary photoinitiator system (DPIHP: diphenyliodonium hexa-fluorophosphate). The final FTIR/Raman degree of conversion (DC), DSC glass transition temperature (T-g) and the resin permeability (rP) were then characterised. The inclusion of the hydrophilic ionic salt DPIHP increased the affinity between amphiphilic monomers and binary photoinitiator system enhancing the DC, T-g and the resistance to fluid permeability (p <0.05). A significant correlation was observed between rP and FTIR/Raman-DC or T-g (p <0.05). In conclusion, new generation resin adhesives containing hydrophilic monomers and solvents should be formulated on a ternary photoinitiator system including hydrophilic ionic accelerator in order to achieve enhanced physical-chemical characteristics especially when light-cured in a relatively short period time (10-20 s).

Original languageEnglish
Pages (from-to)1466-1474
Number of pages9
JournalEUROPEAN POLYMER JOURNAL
Volume48
Issue number8
DOIs
Publication statusPublished - Aug 2012

Keywords

  • Resin dental adhesives
  • Polymerisation
  • Crosslink density
  • Fluid filtration
  • Confocal Raman spectroscopy
  • ATR-FTIR
  • WET BONDING TECHNIQUE
  • ACID-ETCHED DENTIN
  • ADHESIVE SYSTEMS
  • IN-VITRO
  • PHOTOINITIATOR SYSTEM
  • MECHANICAL-PROPERTIES
  • CONFOCAL MICROSCOPY
  • INTERDIFFUSION ZONE
  • RESIN
  • WATER

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