Abstract
Hypertrophy of the masticatory muscles has an etiology not totally clarified and has been attributed to unilateral masticatory efforts due to tooth loss, temporomandibular joint disorders, or parafunctional habits. It usually affects young adults between the second and third decades of life. The objective of this research is to report a case of a 34-year-old male patient reporting an important bilateral increase in volume of the masseteric and temporal region associated with the myalgia of these muscles, the use of an occlusal splint for more than 5 years, and 2 previous applications of botulinum toxin with few improvements. The treatment option was surgical treatment with partial resection of the hypertrophied muscles, the masseter muscle through intraoral access, and the temporal muscle through bicoronal access. The patient has been undergoing clinical follow-up for 1 year, with improvement in both aesthetics and painful symptoms, with no signs of recurrence.
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