Approximately, 4.8% of U.S. adults, or 11.2 to 12.4 million people, had pain in the area
of their temporomandibular joint (TMJ) that may have been caused by temporomandibular joint
dysfunction (National Academies of Sciences et al., 2020). The pain that arose in the
temporomandibular area is particularly due to a joint disorder. Approximately 50 to100 million
individuals in the United States suffer from chronic temporomandibular joint pain (National
Academies of Sciences et al., 2020)
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