IRCT2017100436551N1 IRCT 2017-11-11 Investigator Influence of Sling suture on post-operation complications after extraction of mandibular third molars Comparison of Sling and Single interrupted suture on post-operation complications after extraction of impacted mandibular third molars 2017-10-12 anticipated 36 Complete https://irct.ir/trial/27289 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: randomization will be done by flipping a coin. N/A Condition 1: complication of third molar surgery. Condition 2: gingival recession. Condition 3: periodontal condition. Condition 4: Dehiscence. Condition 5: pain. Intervention 1: single interrupted suture: is used to approximate the buccal and lingual flaps. The needle penetrates the outer surface of the first flap.The under surface of the opposite flap is engaged, and, the suture is brought back to the initial side, the knot is tied. Intervention 2: Sling suture:The needle engages the outer surface of the flap and,encircles the tooth. The outer surface of the same flap of the adjacent inter dental area is engaged.The suture is returned to the initial site, and the knot is tied.