Toothache causing cheek pain may be caused by inflammation of wisdom teeth, apical periodontitis and periodontitis, as follows: 1. Inflammation of wisdom teeth: Inflammation of wisdom teeth mainly occurs in the form of acute inflammation, in the early stage of acute inflammation may appear in the affected area of the slight swelling and pain, usually in the chewing of food pain aggravated, and then it will cause the cheek swelling and pain. 2. Periapical periodontitis: It is an inflammatory disease that occurs at the root tip of the teeth, which is mainly manifested by severe pain in the teeth. In addition, if the pain radiates to the maxillofacial region, it can lead to swelling and pain in the cheeks. 3. Periodontitis: chronic inflammation of the periodontal tissues, the teeth in chewing food will affect the gums, gum swelling and pain, resulting in pain and swelling of the cheeks. After the patient has a toothache after the swelling of the cheeks, it is recommended to consult a doctor in a timely manner to clarify the specific causes, and then carry out targeted treatment.