A Randomized Controlled Trial on the Efficacy of Cognitive Behavioral Therapy for Chronic Pain Associated with Temporomandibular Disorders

INTERVENTION: Control Group:General Treatment;Experimental Group:General Treatment + Cognitive Behavioral Therapy; CONDITION: Chronic pain of temporomandibular disorders PRIMARY OUTCOME: Graded Chronic Pain;Pain intensity; SECONDARY OUTCOME: Depression Anxiety Stress;Oral Health Impact Profile for TMDs;Jaw Functional Limitation Scale; INCLUSION CRITERIA: 1. All the subjects underwent standardized medical history recording, clinical examination and imaging tests. All patients with TMD met the diagnostic criteria of Axis I of the DC/TMD system and were diagnosed with painful TMD. 2. Axis II: Positive result of DASS‐21 screening (D > 9 or A > 7 or S > 14). 3. Age >= 18 years old. 4. Those with joint or muscle pain, with pain duration >= 3 months. 5. Have certain reading ability. 6. Signed the informed consent form.