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Proceedings Paper

Comparative clinical evaluation of the immediate and late analgesic effect of GaAlAs diode lasers of 830 and 660 nm in the treatment of dentine pain: preliminary results
Author(s): Thereza C.C.G.P. Ladalardo; Pedro Luiz Mangabeira Albernaz; Aldo Brugnera; Fatima A. A. Zanin; Jose Tadeu Siqueira; Antonio Luiz Barbosa Pinheiro
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Paper Abstract

In this comparative clinical study, we aimed at evaluating the immediate and late analgesic effect of GaAlAs diode lasers of 660 nm and 830 nm in treatment of dentine pain. We used GaAlAs diode lasers of 660 nm and 830 nm with 35 mW, continuous wave emission, spot size 1 mm2 and a dosage of 4 joules/cm2 applied to the cervical dentine surface. In total 4 treatment sessions were performed at intervals of 7 days in a period of 4 consecutive weeks. A total of 40 teeth treated were divided into two groups comprising 20 teeth each: one group irradiated with a 660 nm wavelength laser, and the other one with a 830 nm wavelength laser. By means of a quantitative visual analogue scale (V.A.S.), we measured the sensitive responses to cold stimulus pre- treatment, and at a follow-up period of 15 and 30 minutes post-treatment in both groups in order to evaluate the immediate analgesic effect. The late effect was evaluated at a follow-up period of 15 and 30 days. Using the GaAlAs diode laser of 660 nm wavelength resulted in better levels of dentine desensitization, at both immediate and late analgesic effect analysis compared with the use of the GaAlAs diode laser of 830 nm wavelength.

Paper Details

Date Published: 3 June 2002
PDF: 5 pages
Proc. SPIE 4610, Lasers in Dentistry VIII, (3 June 2002); doi: 10.1117/12.469322
Show Author Affiliations
Thereza C.C.G.P. Ladalardo, Univ. Federal de Sao Paulo (Brazil)
Pedro Luiz Mangabeira Albernaz, Univ. Federal de Sao Paulo (Brazil)
Aldo Brugnera, Univ. Camilo Castelo Branco (Brazil)
Fatima A. A. Zanin, Univ. Federal do Rio de Janeiro (Brazil)
Jose Tadeu Siqueira, Univ. de Sao Paulo (Brazil)
Antonio Luiz Barbosa Pinheiro, Univ. Federal da Bahia (Brazil)


Published in SPIE Proceedings Vol. 4610:
Lasers in Dentistry VIII
Peter Rechmann; Daniel Fried; Thomas Hennig, Editor(s)

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