Ação da fotobiomodulação com o diodo emissor de luz (LED) no controle da dor pós-exodontia de terceiros molares:ensaio clínico randomizado

Abstract

Introduction: This study works with the effect of photobiomodulation and its action on postoperative pain in third molar extraction at IA and IB Pell & Gregory classification. The use of photodynamic therapy offers some advantages compared to the use of systemic drug agents, such as the absence of side effects and as an alternative to more invasive methods. Thus, the objective was to evaluate the efficacy of the Light Emitting Diode (LED) in the control of postoperative pain in third molar extractions. Materials and Methods: It is a double-blind, split-mouth, randomized study and was conducted with a sample of 33 participants, all them having two-unit for extraction, one on each side. Two protocols were adopted: teeth belonging to PROTOCOL A were removed by using 8mg oral Dexamethasone medication, administered half an hour before surgery, in the dosage of 2 tablets containing 4mg each, in addition blinded placebo irradiation in the surgical cavity immediately post- exodontia, 24 hours after the procedure and 48 hours at the same spot. In PROTOCOL B, teeth were surgically removed by the use of placebo, sugar tablets in the same way as dexamethasone. In addition, true LED irradiation occurred at the same frequency and at the same spots as group A. Results: Pain measured by the Visual Analogue Scale was significantly lower for the protocol with real LED on the first day (p = 0.0057), second day (p = 0.0026) and third day (p = 0.0460), indicating the effectiveness of the treatment. Conclusion: LED therapy proved to be an effective non-invasive alternative for the reduction and control of post-exodontic pain.