Hypertension is a persistently raised blood pressure resulting from increased peripheral arteriolar resistance. Dental patients are exposed to stress, which is potentially hazardous to the physical well-being of these patients. When stressed the cardiovascular workload is increased. The release of adrenocorticotropin (ACTH) from the anterior lobe of the pituitary gland into the blood stream is increased. ACTH stimulates the adrenal cortex to produce cortisol which affects the blood pressure during stress. Adequate pain control is essential to reduce the stress during dental therapy. Pain control is perhaps more vitally important in the medical rise patient then in the normal, healthy but anxious patient. Profound local anesthesia is needed to prevent pain and control of the patient's anxiety. Local anesthesia must be absolutely profound, eliminating sensation from the surgery site. The aim of the present study was to determine blood pressure changes during minor oral surgery in hypertensive and normotensive patients with local anaesthetics containing epinephrine or fellypresin. This study was made on 30 normotensive and 30 hypertensive patients in whom impacted 3. molar or impacted canine teeth, apical resection and cyst operation were proposed under standard conditions. Articaine with 0,006 mg Epinephrine/ml Was used for the local anesthesia. All patients' blood pressure measured four times . The results were compared statistically by using the t- test and one way ANOVA test. Decreasing values of the systolic and diastolic blood pressure values of the whole groups found statistically significant.