Comparison of the Effect of two Suturing Techniques after Extraction of mandibular Third molars

INTERVENTION: A randomized, controlled, two‐arm, double‐blind clinical trial will be performed. 30 patients will be selected with indication for extraction of the 2 lower third molars (total of 60 extractions). All surgical procedures will be performed by the same doctoral student in Oral and Maxillofacial Surgery and Traumatology (CTBMF), at the clinical research center at CTBMF. The lower third molars will be extracted in two separate sessions, with at least fourteen days between each one. In both procedures, patients will be instructed to take 2 pills of 4mg dexamethasone. The members of the surgical team will be properly equipped with personal protective equipment and surgical gown, the patients will undergo intraoral antisepsis through mouthwash with 0.12% chlorhexidine digluconate. Antisepsis of the skin adjacent to the oral region will be performed with 2% chlorhexidine digluconate (degermant), followed by the placement of surgical drapes. Patients will receive local anesthesia, with nerve block technique. The anesthetic agent used will be 2% mepivacaine with adrenaline 1:100,000 (10 µg/mL), which will be used respecting the weight/dependent dose. A standard Ward's incision will be made with a n° 15 scalpel blade mounted on a n° 3 scalpel handle. A triangular mucoperiosteal flap will be detached in order to preserve its blood supply and the aesthetics of the interdental papillae. Extraction techniques will be carried out with the use of elevators and, when necessary, osteotomy and odontosection will be performed, according to the recommendations in the literature. The socket will be irrigated with 0.9% saline solution. The suture will be performed according to the randomized group. This study will be split‐mouth, each alveolus will be considered an individual experimental uni E07.858.690.820 CONDITION: C10.597.613.750.700 Pain PRIMARY OUTCOME: It is expected to evaluate whether healing by second intention of the relaxing incision promotes a lower degree of edema in the postoperative period of third molar extraction. SECONDARY OUTCOME: It is expected to evaluate whether healing by second intention of the relaxing incision promotes a lower degree of pain in the postoperative period of third molar extraction. It is expected to evaluate whether healing by second intention of the relaxing incision promotes a lower degree of trismus in the postoperative period of third molar extraction. INCLUSION CRITERIA: age between 18 to 30 years; present surgical site without current signs and symptoms of infection; present mandibular third molars in similar positions and with indication for extraction