13th World Congress for Laser Dentistry

26-28, April 2012

Barcelona, Spain

Meeting Abstract

Sponsors: World Federation for Laser Dentistry

- Oral Presentation 72

TITLE: Periodontal and Pulpal temperature increase during dental treatments of roots and gingival pockets with Diode lasers (980 and 810 nm). In vitro study.

AUTHORS: Hadeiba M, Tielemans M, Heysselaer D, David S, Rasca E, Nammour S.

EMDOLA, University of Liege, Belgium

SOURCE: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(Supplement1):S72.

* doi:10.4317/medoral.17643571

http://dx.doi.org/10.4317/medoral.17643571

Abstract

Objectives: There is a lot of interest for the use of diode lasers (810 nm and 980 nm) in dentistry. The aim of this study is to evaluate the optimal irradiation conditions for a harmless use of diode lasers in endodontics and periodontology.

Materials and methods: We used two kinds of diode lasers in our study (810 nm and 980 nm). Different irradiation conditions ranged from 0.5 W to 12 Watts were used in different modes (pulsed and continuous). For endodontic applications, a thermocouple was inserted on the surface of the cement in order to measure the temperature rise for the periodontal tissues. On the other hand, the thermocouple was inserted in the root canals to measure the temperature increase in the pulp chamber during the irradiation of the surface of the cement for periodontal applications.

Result: Our in vitro results showed that the temperature rise is harmless for pulp vitality and for periodontal tissues in the following irradiation conditions: The Pulpal temperature rise during periodontal treatments was < 3 °C for laser irradiations lower than 2 W (in continuous mode). The temperature rise of dentinal cements remained below 10 °C during endodontic treatments when the irradiation power was lower than 1 W in continuous mode.

Conclusion: Laser diodes can be used without damaging dental pulp or periodontal tissues in some irradiation conditions.