Toothache at the same time half of the face is swollen may be acute purulent periapical inflammation caused by the rapid reduction of the swelling of the method of medical professionals for incision and drainage of pus, specific as follows. When acute apical periodontitis develops to the subperiosteal or submucosal abscess stage, there will generally be a toothache accompanied by swelling on the affected side, should be incised under local anesthesia to drain the pus, can be more quickly to achieve the purpose of reducing swelling and pain. If the abscess is deeper, the incision will be enlarged appropriately and rubber drainage strips will be placed until no pus is discharged. The incision and drainage can be done at the same time as the pulp cavity opening to relieve the high pressure in the pulp cavity, which will help to relieve the tooth pain and eliminate the swelling. If the toothache and facial swelling are severe, or if other symptoms occur, it is recommended that you visit a hospital and receive proper treatment as soon as possible.