Physical therapy is one of the initial conservative treatments for TMD. Many studies and previous studies in our department have proved that it can improve the pain, mouth opening and mandibular function of patients with TMD. However, the current research on physical therapy for TMD has a short follow-up period, which cannot prove that the patients' long-term mandibular function has improved, and few studies have analyzed the relevant factors affecting the curative effect. Therefore, this study is intended to adopt a retrospective cohort study to include TMD patients who received physical therapy in our department from 2016.01-2021.12. The patients' pain, joint area noise, mandibular range of motion, mandibular function and other conditions will be followed up by remote telephone or online questionnaire, and the patients' demography, clinical symptoms, pain, oral habits, depression, anxiety, sleep status, head and neck posture and other information will be collected. The multiple regression analysis model will be used to compare and analyze the relevant factors affecting the prognosis of patients, and to intervene in advance the factors that have a significant impact on the prognosis of the disease, so as to improve the treatment effect.

Inclusion Criteria:

• The first-episode TMD patients with pain, limited mouth opening and abnormal noise in the joint area; 12-80 years old; regardless of gender; The patient received physical therapy in the outpatient department; MRI or CBCT imaging was completed before enrollment

Exclusion Criteria:

• Patients with recurrent TMD; Patients who had previously undergone TMJ surgery; Patients with nervous system diseases, immune system diseases, tumors and other diseases that the attending physician considers unsuitable for inclusion in the study; Cognitive impairment

TMD patients who received patient education or physical therapy in the Department of Rehabilitation Medicine of the Ninth People's Hospital affiliated to Shanghai Jiaotong University Medical College from January to December 2016

After the research results are published, the original data will be shared in the form of network data sets