Intra-pulpal and subsurface temperature rise during tooth irradiation with 808 nm diode laser: an in vitro study

Authors

  • F Khouja Division of Cariology and Endodontology Section of Dental Medicine, Faculty of Medicine University of Geneva, Geneva
  • M Abdelaziz Division of Cariology and Endodontology Section of Dental Medicine, Faculty of Medicine University of Geneva, Geneva
  • T Bortolotto Division of Cariology and Endodontology Section of Dental Medicine, Faculty of Medicine University of Geneva, Geneva
  • I Krejci Division of Cariology and Endodontology Section of Dental Medicine, Faculty of Medicine University of Geneva, Geneva

DOI:

https://doi.org/10.23804/ejpd.2017.18.01.12

Keywords:

Diode laser, Dental tissues, Laser irradiation, Temperature changes

Abstract

AIM: This in vitro study evaluated the pulpal and subsurface temperatures during proximal tooth surface irradiation with different settings of an 808 nm diode laser. MATERIALS: The elevation of pulpal and subsurface temperature during irradiation was measured using thermocouples positioned in the centre of the pulp chamber (n=30) and in the centre of a prepared 1.5 mm deep coronal cavity (n=30). Each sample was irradiated 3 times within one-week interval using different exposure settings. A temperature increase of 3.5°C was regarded as critical value for pulpal heath. Results were analysed with one-way ANOVA and Duncan post hoc tests. Micromorphological investigation by digital microscopy was carried out for the irradiated and non-irradiated tooth surface.