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Lasers in Medical Science

, Volume 28, Issue 6, pp 1549–1558 | Cite as

Laser acupuncture in patients with temporomandibular dysfunction: a randomized controlled trial

  • Luciano Ambrosio FerreiraEmail author
  • Rodrigo Guerra de Oliveira
  • Josemar Parreira Guimarães
  • Antonio Carlos Pires Carvalho
  • Marcos Vinicius Queiroz De Paula
Original Article

Abstract

A prospective, double-blind, randomized, and placebo-controlled trial was conducted in patients with chronic temporomandibular disorder (TMD) to check the analgesic efficacy of infrared low-power GaAlAs diode laser applied to acupuncture points. Forty female subjects, ranging in age from 20 to 40 years, with diagnoses of chronic myofascial pain and arthralgia were randomly allocated to two groups: an experimental group (EG) who received the laser acupuncture as adjunct to reversible occlusal splint therapy and a control group (CG) who received a placebo laser associated with occlusal splint therapy. Both approaches were applied once a week for 3 months. Laser acupuncture was defined by the following parameters: 50-mW continuous radiation for 90 s to acupoints ST6, SI19, GB20, GB43, LI4, LR3, NT3, and EX-HN3; defining 4.5-J energy; 1250-W/cm2 density point; and 112.5-J/cm2 total density. The outcome measurements included a symptom evolution assessment carried out by checking spontaneous and palpation pain intensity, which was indicated on a visual analog scale (VAS). All evaluations were made by an assessor who was blind to the treatment. The symptom reduction was significant in both groups (EG: VAS = 0, n = 20; CG: VAS between 2 and 4, n = 18). The measurements showed significantly faster and lower pain intensity values in the EG (p ≤ 0.002), where there was a higher proportion of patients with remission of symptoms related to the action of laser acupuncture. For patients in whom conservative treatment was adopted, the laser acupuncture is a secure, noninvasive, and effective treatment modality because it improves the chronic pain associated with TMD and has no side effects.

Keywords

Laser therapy Low level Acupuncture Temporomandibular joint dysfunction syndrome Chronic pain 

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  • Luciano Ambrosio Ferreira
    • 1
    • 2
    Email author
  • Rodrigo Guerra de Oliveira
    • 3
  • Josemar Parreira Guimarães
    • 1
  • Antonio Carlos Pires Carvalho
    • 4
  • Marcos Vinicius Queiroz De Paula
    • 5
  1. 1.Diagnostic and Guidance Center for Patients with Temporomandibular DisordersFederal University of Juiz de ForaJuiz de ForaBrazil
  2. 2.Juiz de ForaBrazil
  3. 3.College of Medical Sciences and HealthJuiz de Fora—SUPREMAJuiz de ForaBrazil
  4. 4.Department of Radiology, College of MedicineFederal University of Rio de JaneiroRio de JaneiroBrazil
  5. 5.Department of Dental Clinic, College of DentistryFederal University of Juiz de ForaJuiz de ForaBrazil

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