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Photothermal radiometry (PTR) investigation of dynamic thermal parameters of dental composites

M. STREZA1,* , D. DADARLAT1, M. N. POP1, C. PREJMEREAN2, D. PRODAN2, M. DEPRIESTER3, S. LONGUEMART3, A. HADJ SAHRAOUI3

Affiliation

  1. National R&D Institute for Isotopic and Molecular Technologies, Donath Str. 65-103, POB-700, 400293 Cluj-Napoca, Romania
  2. Raluca Ripan Institute for Research in Chemistry, 400294, Cluj-Napoca, Romania
  3. Univ Lille Nord de France, CP 59000 Lille, ULCO, UDSMM, CP 59140 Dunkerque, France

Abstract

Thermo-physical properties of some new dental restorative materials were investigated by means of photothermal radiometry (PTR) technique, in order to select the most suitable materials in terms of thermal biocompatibility. The measurement procedure is based on the analysis of the PTR signal (amplitude and phase) as a function of modulation frequency of radiation. The instrumental influence is eliminated by a normalization procedure obtained with a reference sample. The thermophysical parameters were obtained by using some multiparameter optimisation algorithms to fit the PTR experimental data.

Keywords

PTR radiometry, Dental composites, Thermal diffusivity, Thermal biocompatibility.

Citation

M. STREZA, D. DADARLAT, M. N. POP, C. PREJMEREAN, D. PRODAN, M. DEPRIESTER, S. LONGUEMART, A. HADJ SAHRAOUI, Photothermal radiometry (PTR) investigation of dynamic thermal parameters of dental composites, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1830-1834 (2010).

Submitted at: Nov. 3, 2010

Accepted at: Nov. 10, 2010