Painful mouth opening after tooth extraction may be due to erosion of the corners of the mouth, traumatic inflammation or temporomandibular joint disease seizure, etc. The details are as follows.
1. Corner of the mouth erosion: some teeth need to be performed in a state of wide-open mouth, which requires instruments to pull the corners of the mouth, the blood supply of the tissues being pulled is reduced, and by mechanical friction, the corners of the mouth will be eroded after the operation, and you will feel pain when you open your mouth.
2. Traumatic inflammation: the incision and flap operation of tooth extraction will cause traumatic inflammation of the related tissues, and the opening of the mouth requires the participation of muscles, and it will involve the tissues in the oral cavity, which will cause pain when opening the mouth.
3. Temporomandibular joint disease attack: too wide opening of the mouth during tooth extraction, violent tooth extraction, postoperative infection and other reasons will cause temporomandibular joint disease attack.
If the above symptoms are serious or continue without improvement, you should go to the hospital in time.