Lasers in Medical Science

, Volume 24, Issue 1, pp 81–85

Temperature rise during photo-activated disinfection of root canals

  • B. Dickers
  • L. Lamard
  • A. Peremans
  • S. Geerts
  • M. Lamy
  • M. Limme
  • E. Rompen
  • R. J. G. De Moor
  • P. Mahler
  • J. P. Rocca
  • S. Nammour
Original Article

DOI: 10.1007/s10103-007-0526-y

Cite this article as:
Dickers, B., Lamard, L., Peremans, A. et al. Lasers Med Sci (2009) 24: 81. doi:10.1007/s10103-007-0526-y

Abstract

The aim of this study was to determine whether it is safe to use photo-activated disinfection (PAD) during root canal treatment without heating the periodontal tissues. Root canals of 30 freshly extracted single-rooted teeth were prepared using ProFiles up to size ISO 40 and then filled with photo-sensitiser: tolonium blue (1.2 mg/l). The 635 nm diode laser was used with the manufacturer’s endo-tip. Samples were irradiated for 150 s (output power 100 mW, approximate energy density 106.16 J/cm2). Temperatures were recorded at working length on the external root surface. After 150 s of PAD irradiation, the average temperature rise was 0.16 ± 0.08°C. All values were lower than the 7°C safety level for periodontal injury. It was concluded that, regarding the temperature increase, the use of PAD in root canals could be considered harmless for periodontal tissues.

Keywords

PADLaserPhoto-activatedEndodonticsRoot canal

Copyright information

© Springer-Verlag London Limited 2007

Authors and Affiliations

  • B. Dickers
    • 1
  • L. Lamard
    • 2
  • A. Peremans
    • 2
  • S. Geerts
    • 1
  • M. Lamy
    • 1
  • M. Limme
    • 1
  • E. Rompen
    • 1
  • R. J. G. De Moor
    • 3
  • P. Mahler
    • 4
  • J. P. Rocca
    • 5
  • S. Nammour
    • 1
  1. 1.Department of Dental Sciences, Polyclinique Brull, Faculty of MedicineUniversity of LiegeLiegeBelgium
  2. 2.Laboratoire de Spectroscopie Moléculaire de Surface (LASMOS)Facultés Universitaires Notre Dame de la PaixNamurBelgium
  3. 3.Dental Schools, Ghent University HospitalGhent UniversityGhentBelgium
  4. 4.Pole Odontologique, CHU NICEUniversity of Nice—Sophia AntipolisNiceFrance
  5. 5.Laboratory of Surfaces and Interfaces in OdontologyUniversity of Nice—Sophia AntipolisNiceFrance