الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The aim of this study is to evaluate the effect of Prednisolone as Premedication in reduction of post endodontic pain of irreversible pulpitis treated in a single visit using rotary system.Materials and method; In this study 40 patients with irrivesrsible pulpitis undergoing root canal therapy were selected. Patients were randomly divided into two groups: Prednisolone group (A) and placebo group (B). Medication was given 30 minutes before start of the treatment. Root canal therapy was accomplished with Revo-S system in a single visit. Evaluation for the incidence of post-endodontic pain, using the visual analog scale approach 6, 12, 24, hours after the treatment was accomplished.