Bidar,M , , Zarrabi,M , , Sadeghi,G , and Alipour,N . "A Comparative Study between the Efficacy of Tramadol Hydrochloride and Ibuprofen in Control of Pain after Root Canal Therapy", Journal of Mashhad Dental School, 32, 2, 2008, 111-116. doi: 10.22038/jmds.2008.1322