Purpose: To observe the change of blood pressure during extraction of teeth.
Methods: Patients without hypertension who needed extraction were randomly selected, tooth extraction was carried out. The blood pressure and the patient's response to operation were observed and recorded during the procedure.
Results: The blood pressure in 825 patients increased significantly. The average increased blood pressure was 45/26 mmHg, 3 patients had arrhythmia, 5 patients had adverse reaction.
Conclusion: The patient's blood pressure must be fewer than 140/90 mmHg, before a difficult extraction of teeth.