Bupivacaine as pre-emptive analgesia in third molar surgery: Randomised controlled trial.

We conducted a prospective, randomised study on the use of pre-emptive analgesia in 45 patients who had bilateral impacted third molars removed. Bupivacaine 0.5% with adrenaline 1:200,000 was injected on one side, the other side acting as control. A visual analogue scale was used to measure the extent of postoperative pain. There was a significant reduction (p = 0.05) in postoperative pain on the injected side at 6, 12, and 72 h and an overall reduction in pain up to 7 days.