Abstract
Objective: To systematize the scientific evidence on the efficacy of botulinum toxin type A in the treatment of myofascial pain related to masticatory muscles. Method: A bibliographical search was made in the PubMed Central Journal and Allergan Product Literature databases - botulinum toxin (APL) encompassing the past 12 years, with the descriptors: “myofascial pain,” “botulinum toxin,” “treatment,” “masticatory muscles”. The methodological quality of the studies was evaluated through the Jadad scale. Four randomized, double-blind, clinical trial studies were selected. Results: It was found that the research on the use of botulinum toxin type A for myofascial pain contributed to improving the treatments that existed until that time for this clinical condition. Conclusion: The need for more studies and forms of evaluating precisely and quantitatively is essential in order to find a definitive answer on the efficacy and safety of this treatment.
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