Patient Question: Disease:When yawning, the mouth can not be closed, need to use the hand a get can Description:I am a sophomore, had a mandibular disorder syndrome, and now suddenly found that yawning when the mouth can not be closed, mainly on the left side of the face, with the hand to get a little to be able to close. What is the problem? Thank you hope to provide help: specific detailed, serious advice treatment Shandong University Stomatology Hospital Oral and Maxillofacial Surgery Li Tao hospital department: Zibo City Center Hospital Stomatology Oral and Maxillofacial Surgery Department, Shandong University Stomatology Hospital Li Tao replied: Hello, look at your account may be the presence of temporomandibular joint joint strangulation. If now has been reset, usually pay attention to do not open the mouth, such as yawning, yawning, biting large pieces of food, etc., do not bite too hard things, usually pay attention to the joint area to keep warm.