This study is designed to determine if the preemptive use of a combination of acetaminophen and ibuprofen is more effective in reducing pain following orthodontic tooth movement when compared to the use of acetaminophen and ibuprofen alone. Before their orthodontic appointment, participants will be administered acetaminophen (650mg), ibuprofen (400mg), or acetaminophen (650mg) + ibuprofen (400mg). Participants will be asked to record their pain intensity using a numerical (0-10) visual analog scale (VAS) during rest, light biting, and while chewing paraffin wax during the following time intervals: immediately following drug administration, 6 hours after, the morning after, and the second morning after orthodontic treatment.
