Hypertrophy of the masseter or temporalis muscles or both.
D000293:Adolescent; D002638:Chewing Gum / Q000009:adverse effects; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006984:Hypertrophy; D008297:Male; D008310:Malocclusion / Q000150:complications; D008410:Masticatory Muscles; D009135:Muscular Diseases / Q000175:diagnosis* / Q000209:etiology; D010309:Parotitis / Q000175:diagnosis
D002638:Chewing Gum