1. Local infiltration anesthesia. Generally, 2% procaine or lidocaine or 4% articaine is used for infiltration anesthesia in the gingival-buccal migration of the surgical area on the lip and buccal side, and the incisal foramen or palatal foramen block anesthesia on the palatal side. Liang Zhaozhong, Department of Special Stomatology, Urumqi Stomatological Hospital, Urumqi, China 2. Disinfection The patient was instructed to clean the mouth with 0.12% chlorhexidine gargle before surgery. The skin around the oral cavity was disinfected with 75% alcohol and sterile towels were laid. The surgeon wore sterile gloves. 3. The location of the surgical incision was first checked with a periodontal probe, then the location of the pocket base was marked, and the location of the incision was determined accordingly. The location of the pocket base can be marked by the impression forceps method or by the probe method. Impression forceps method: the straight beak of the impression forceps (without hook end) is inserted into the pocket and reaches the bottom of the pocket, the curved beak (with hook end) is aligned with the gingival surface, clamping the forceps so that the two beaks come together and the curved beak pierces the gingiva to form a bleeding point as the marking point, which is consistent with the location of the pocket bottom. Probing method: probe the depth of the pocket with a probe, and pierce the gingiva with a sharp probe at the gingival surface equivalent to the bottom of the pocket to form a bleeding point as a marker. Figure 14-1 gingivectomy fixed point (1) with imprinting forceps to locate the bottom of the pocket (2) lateral view, showing the flat end of the imprinting forceps to the bottom of the pocket, with the hooked end stabbed from the gingival surface (3) from the fixed point of the root side of 1 to 2 mm for incision, and the tooth surface into 45. angle outward oblique in the operative area of each tooth lip (tongue) side of the gingiva of the proximal, central, and distal center, respectively, mark points, the line of the points is the location of the bottom of the pocket, as the cut El’s basis. If the gingival tissue is thicker, the entry point can be located more root-side. 4. The incision is made with a l5 blade or axe gingival knife, with the blade angled to the crown side and at an angle of 45 to the long axis of the tooth, and the gingiva is cut at the position of the incision, reaching the root surface below the pocket, avoiding exposure of the alveolar bone. The gingiva is excised by making successive El incisions so that the gingival margin becomes scalloped. The gingival papilla is then cut along the incision between the adjacent teeth using a Lancet or #11 sharp knife. The angle of incision can be adjusted according to the thickness of the gingiva, and the angle of incision can be reduced if the gingiva is thick. The gingiva must be cut to the tooth surface at one time, avoid repeatedly cutting and damaging the tissue to make the gingival margin jagged, and avoid residual gingival tissue, which is not conducive to tissue healing. The incision can be continuous or intermittent, tooth by tooth, but attention should be paid to the connection of adjacent gingival incisions11 and the continuous gingival profile. The choice of continuous or interrupted incision can be determined by the consistency of the depth of the periodontal pockets in each tooth in the operative area. 5.Scrape off the marginal gingival tissue and adjacent interdental gingival tissue with a supragingival scaler (commonly used as a broad-backed sickle scaler or Ba11 scaler), and then thoroughly scrape away the residual tartar, pathological granulation tissue, and diseased bone from the tooth surface. 6.Trim the gingiva with small curved scissors or gingival knife, trim the traumatic edge and uneven gingival surface, so that the gingival form is at an angle of 45 with the tooth surface, and form a normal physiological shape of gradually thinning to the edge and scallop-like. 7. Saline rinse the trauma, gauze compression to stop bleeding, check the trauma, and apply periodontal plugging agent. 8. Postoperative treatment can be used 0.12% chlorhexidine rinse, every El 2 times, each time l5ml rinse l minutes. 2, 1 hour in the surgical area without brushing teeth, can eat soft food. It is generally not necessary to use internal antimicrobial drugs. 5-7 It review, remove the periodontal plug treatment agent. If the wound is large and has not yet healed, periodontal plugging agent can be applied for another week if necessary.