title: Laser therapy in the treatment of dentine hypersensitivity.
abstract: Cervical dentine hypersensitivity is the most frequent complaint among reported odontalgias. Thus, this study evaluated the effectiveness of two types of lasers (660 nm wavelength red, and 830 nm wavelength infrared) as dentine desensitizers, as well as both the immediate and late therapeutic effects in individuals 25 to 45 years of age. A total of 40 teeth with cervical exposure were treated in 4 sessions. They were divided into 2 groups according to treatment. A 660 nm wavelength red diode laser and an 830 nm wavelength infrared diode laser were used. Dentine sensitivity to cold nociceptive stimulus was evaluated by means of a pain numeric scale from zero to 10 before each treatment session, at 15 and 30 min after irradiation, and in a follow-up period of 15, 30 and 60 days after the end of treatment. Significant levels of dentinal desensitization were only found in patients ranging in age from 25 to 35 years. The 660 nm red diode laser was more effective than the 830 nm infrared laser and a higher level of desensitization was observed at the 15 and 30 minute post-irradiation examinations. The immediate and late therapeutic effects of the 660 nm red diode laser were more evident in 25-35-year-old patients compared with those of the 830 nm infrared diode laser, in terms of the different age groups.
authors.affiliation: Federal University of São Paulo, UNIFESP-EPM, São Paulo, SP, Brazil. t.chris@uol.com.br
authors.forename: Thereza Christinna Cellos Gonçalves Pinheiro
authors.initials: TC
authors.lastname: Ladalardo
authors.forename: Antonio
authors.initials: A
authors.lastname: Pinheiro
authors.forename: Roberto Augusto de Carvalho
authors.initials: RA
authors.lastname: Campos
authors.forename: Aldo
authors.initials: A
authors.lastname: Brugnera Júnior
authors.forename: Fátima
authors.initials: F
authors.lastname: Zanin
authors.forename: Pedro Luiz Mangabeira
authors.initials: PL
authors.lastname: Albernaz
authors.forename: Luc Louis Maurice
authors.initials: LL
authors.lastname: Weckx
mesh_terms: D000328:Adult; D000367:Age Factors; D000704:Analysis of Variance; D003807:Dentin Sensitivity / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D007259:Infrared Rays; D053685:Laser Therapy; D008027:Light; D028022:Low-Level Light Therapy / Q000295:instrumentation; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement