Blood pressure of 190 mmHg after tooth extraction belongs to high blood pressure, which is an abnormal phenomenon and may lead to bleeding after tooth extraction, hypertensive encephalopathy or cerebrovascular accident, etc., as follows. 1. Bleeding after tooth extraction: the process of tooth extraction will cause the apical blood vessels and periodontal tissues to tear and bleed, high blood pressure will lead to bleeding after tooth extraction, causing anemia, dizziness, and in severe cases, shock. 2. Hypertensive encephalopathy: The sudden increase of blood pressure after tooth extraction may cause hypertensive encephalopathy, which may cause severe headache, blurred vision, nausea and vomiting. 3. Cerebrovascular accident: Abnormal elevation of blood pressure may cause cerebrovascular accident, with common symptoms such as sudden weakness of one side of the face, arm or lower limb, confusion and difficulty in seeing. If the above symptoms occur, you should go to the hospital in time.