IRCT20180905040955N1 IRCT 2019-05-31 Tabriz University of Medical Sciences Comparison of the effect of local and intramuscular injection of dexamethasone on side effects following surgical removal of impacted mandibular third molars Comparison of the effect of local and intramuscular injection of dexamethasone on the amount of mouth opening, pain and swelling following surgical removal of impacted mandibular third molars 2018-11-22 anticipated 25 Complete https://irct.ir/trial/33710 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive. 3 pain,edema and trismus after impacted lower third molar surgery. Intervention 1: Intervention group: In this group, local dexamethasone injection will perform then local anesthesia will perform. after surgical incision and bone removal third molar will extract. Then the tissue will suture with Silk suture 3 O and the patient will discharge. Measurements will taken in the later follow ups. Intervention 2: Intervention group: In this group, intramuscular dexamethasone injection will perform then local anesthesia will perform. after surgical incision and bone removal third molar will extract. Then the tissue will suture with Silk suture 3 O and the patient will discharge. Measurements will taken in the later follow ups. No - There is not a plan to make this available Justification or reason for not sharing IPD is no decision made yet.