A 40-year-old patient with mandible fracture applied to a doctor 3 weeks after immobilization of breaks because of pain and body temperature rise. Objectively: a slight swelling in the chin area, mucous membrane of alveolar process in the area of the 2 1 | 1 2 teeth is hyperemic, edematic, palpatory painful. Overtooth splint on 5 4 3 2 1 | 1 2 3 4 5 teeth is in satisfactory condition, no occlusion abnormalities were detected. The patient was diagnosed with acute purulent periostitis of mandible. What surgical action is indicated?