Subject
Female; Humans; Adult; Aged; Middle Aged; Severity of Illness Index; Case-Control Studies; Reference Values; beta-Endorphin/blood; Biomarkers of Pain; Pain Threshold/physiology; Arthralgia/blood/etiology/physiopathology; Articular; Facial Pain/blood/complications/physiopathology; Matched-Pair Analysis; Range of Motion; Temporomandibular Joint Disorders/blood/complications/physiopathology