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Lasertherapy efficacy in temporomandibular disorders: control study.

Thiago de Santana Santos1, Marta Rabello Piva, Maria Helena Ribeiro

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Laser therapy effectively reduced pain and improved jaw movement in patients with temporomandibular disorders. This treatment offers a significant analgesic effect for facial joint and muscle pain.

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Area of Science:

  • Dentistry
  • Pain Management
  • Physical Therapy

Background:

  • Temporomandibular dysfunction (TMD) involves painful joint and muscle symptoms in the face.
  • Laser therapy is explored for TMD due to its documented analgesic properties.

Purpose of the Study:

  • To assess the efficacy of laser therapy in managing temporomandibular disorders.
  • To evaluate laser therapy's impact on pain and jaw mobility in TMD patients.

Main Methods:

  • A clinical study involving 50 volunteers with TMD, divided into control and experimental groups.
  • Measurements included mouth opening, laterality, visual analog scale for pain, and palpation of pain points.
  • A single session of AsGaAl laser (40mW, 80J/cm², 16s) was applied to four points.

Main Results:

  • Laser therapy significantly increased the mean amplitude of mandibular movements (p = 0.0317).
  • A significant reduction (43.6%) in pain intensity was observed, as measured by the visual analog scale.
  • Improvements were noted after one week of follow-up.

Conclusions:

  • Laser therapy demonstrates effectiveness in decreasing painful symptoms associated with temporomandibular disorders.
  • The observed benefits may stem from the laser's analgesic effect or a placebo response.