American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
Minor V, Marris CK, McGorray SP, Yezierski R, Fillingim R, Logan H, Wheeler TT. Effects of preoperative ibuprofen on pain after separator placement. American Journal of Orthodontics and Dentofacial Orthopedics. 2009 Oct;136(4):510–7. doi: 10.1016/j.ajodo.2007.09.018.