Insufficient blood supply to the brain does not usually make the teeth sore and swollen. Insufficient blood supply to the brain is usually caused by vertebral artery type cervical spondylosis, diabetes or chronic heart failure, etc. The blood supply to the arteries of the brain will be less than the normal demand, which will easily lead to headache, dizziness, blurred vision, easy fatigue, weakness of the limbs, etc., but usually does not lead to tooth soreness and bloating. Sore and swollen teeth can be caused by eating hard and cold foods, dental caries or periodontitis, etc. It is recommended that the patient go to the hospital in a timely manner to clarify the specific cause of the symptoms before treatment. When the symptoms of tooth soreness and swelling, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to improve the examination, for targeted treatment.