USE OF LOW-LEVEL LASER THERAPY IN THE TREATMENT OF DENTIN HYPERSENSITIVITY: A LITERATURE REVIEW

Abstract

Introduction: Dentin hypersensitivity (DH) is a common clinical condition characterized by acute pain resulting from dentin exposure to external stimuli, mainly explained by the hydrodynamic theory. Objective: To conduct a literature review on the use of low-level laser therapy (LLLT) in the treatment of DH, addressing mechanisms of action, clinical efficacy, and application protocols. Methodology: This is an integrative review carried out through searches in PubMed, BVS, and Scopus databases, using descriptors related to laser therapy and dentin hypersensitivity. After applying inclusion and exclusion criteria, 14 studies were selected for analysis. Results: The studies demonstrated that LLLT promotes significant pain reduction, with immediate and lasting effects, especially when associated with desensitizing agents. Parameters varied among different wavelengths, power levels, and number of sessions. Discussion: LLLT showed similar or superior efficacy compared to conventional treatments, acting through neural modulation and tissue biostimulation. However, there is a lack of standardization in clinical protocols, which limits comparisons. Conclusion: LLLT is a safe and promising alternative for the treatment of DH, but further standardized studies are needed to consolidate its clinical application.