Effects of polar solvents and adhesive resin on the denaturation temperatures of demineralised dentine matrices

Steven R. Armstrong, Julie L.P. Jessop, Erik Winn, Franklin Chi Meng Tay, David Henry Pashley

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Objectives: To measure the denaturation temperature (Td) of demineralised dentine matrix as a function of infiltration with water vs. polar solvents vs. adhesive resins. Methods: Small discs of normal dentine were completely demineralised in 0.5 M EDTA. Dried demineralised specimens were placed in water, methanol, ethanol, acetone, η-butanol or HEMA. Additional specimens were infiltrated with Prime&Bond NT and polymerised. All specimens sealed in high-pressure pans and scanned using differential scanning calorimetry (DSC). Results: Demineralised dentine saturated with water showed a Td of 65.6 °C that increased with saturation by methanol, ethanol, acetone, η-butanol or HEMA to 148.5 °C. These increases in Td were inversely related to the molar concentration of the solvents and to their Hoy's solubility parameter for hydrogen bonding (δh, p < 0.01), as well as directly related to the cube root of their molecular weights (p < 0.001). The presence of adhesive resins also increased the Td of demineralised matrices to even higher values depending if the resin bonded dentine was measured after 24 h of water storage (166.8 °C) or dry (172.7 °C) storage. Conclusions: Solvents and monomers with low δh values (i.e., 100% HEMA) increase the Td of demineralised dentine above that produced by solvents with higher δh values such as methanol and water.

Original languageEnglish (US)
Pages (from-to)8-14
Number of pages7
JournalJournal of Dentistry
Volume36
Issue number1
DOIs
StatePublished - Jan 1 2008

Fingerprint

Adhesives
Dentin
Temperature
Water
Methanol
Butanols
Acetone
Ethanol
Differential Scanning Calorimetry
Hydrogen Bonding
Edetic Acid
Solubility
Molecular Weight
Demineralized Dentin Matrix
Pressure
hydroxyethyl methacrylate

Keywords

  • Collagen
  • DSC
  • Dentine
  • Glass transition temperature
  • Resin
  • Solvents

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Effects of polar solvents and adhesive resin on the denaturation temperatures of demineralised dentine matrices. / Armstrong, Steven R.; Jessop, Julie L.P.; Winn, Erik; Tay, Franklin Chi Meng; Pashley, David Henry.

In: Journal of Dentistry, Vol. 36, No. 1, 01.01.2008, p. 8-14.

Research output: Contribution to journalArticle

Armstrong, Steven R. ; Jessop, Julie L.P. ; Winn, Erik ; Tay, Franklin Chi Meng ; Pashley, David Henry. / Effects of polar solvents and adhesive resin on the denaturation temperatures of demineralised dentine matrices. In: Journal of Dentistry. 2008 ; Vol. 36, No. 1. pp. 8-14.
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