Vasoconstrictor can be used to vasoconstriction blood vessels and reduce the amount of local anesthetic absorption into the blood circulation. This study aimed to assess the effect of the use bupivaqaine difference plus 0.5% normal saline with 0.5% bupivaqaine plus dexamethasone on postoperative pain with infraorbital block technique on fess surgery. This study uses a randomized controlled trial (double-blind) from February to July 2018 adam malik general hospital. The sampling technique is done by non-probability sampling by consecutive sampling method, amounting to 40 patients. Patients who have undergone surgery fess rated pain using the vas scale (score 0-10) and the need for extra analgesics in the first 24 hours. The results of this study, the 40 samples examined include male gender which men as much as 20 samples (50%) and female as many as 20 samples (50%). Assessment of pain at t0 found that the data was not statistically significant (p> 0.05). Assessment of pain in the t1 the data is not found to be statistically significant (p> 0.05). Assessment of pain in t2 was found that the data was not statistically significant (p> 0.05). Assessment of pain in t3 was found that the data was not statistically significant (p> 0.05). Group b (bupivaqaine plus dexamethasone) generating vas values were lower than the mean vas value average in this study. From the statistical test showed a significant difference in the whole time of the examination (p> 0.05). Conclusion, there is not a difference statistically significant vas value in the delivery of a (bupivaqain normal saline plus 0.5%) than that of b (bupivawaine plus dexamethasone). The addition of dexamethasone as an adjuvant did not leave a lot of differences in the level of pain in this study assessment of pain in t3 was found that the data was not statistically significant (p> 0.05). Group b (bupivaqaine plus dexamethasone) generating vas values were lower than the mean vas value average in this study. From the statistical test showed a not significant difference in the time of the examination (p> 0.05).

Keywords : Bupivaqain, Saline, Dexamethasone, Visual Analog Scal.