Whether TMJ disorder will lead to facial asymmetry depends on the condition, generally speaking, mild TMJ disorder will not lead to facial asymmetry, while severe TMJ disorder may lead to facial asymmetry. 1. Slight TMJ disorder: Slight TMJ disorder often manifests as pain, soreness and popping of TMJ joints, which usually does not lead to facial asymmetry. 2. Severe TMJ disorder: In long history or severe TMJ disorder, patients often use one side of the teeth for chewing, long-term wear and tear can cause bone resorption, condylar process becomes shorter, the jaw will be biased to the affected side, and the patients can have asymmetry of the face. Patients with TMJ disorders are advised to consult the hospital in time for early and standardized treatment to avoid affecting the aesthetics and function of the oral cavity.