There are many ways to suture the gingival flap, in addition to interrupted interdental suture, the more commonly used is the suspension suture (slingsuture). Its advantage is the use of teeth to suspend the fixed gingival flap, not simply by the buccal and lingual side of the pull together suture, especially for buccal and lingual sides of the gingival flap height inconsistency, so that each side of the gingival flap in the reset level of the teeth and the bone surface tightly, not easy to loosen or too much tension. Commonly used suture methods are as follows: (a) interdental interrupted suture interdental interrupted suture (interruptedinterdentalsuture) is in the teeth adjacent to the gap, the buccal, lingual gingival papilla flap directly pull together suture, applicable to the lips, tongue side of the gingival flap of the tension of the same, the height of the same. Direct circumferential interrupted sutures may be used (Fig. 14-8A, B), or figure-of-eight interrupted sutures may be used. Interrupted sutures can also be used to close longitudinal incisions in the gingival flap. Liang Zhaozhong, Department of Oral Specialties, Urumqi Stomatological Hospital (b) Suspension suture Suspension suture (slingsuture) is the use of teeth in the operative area to suspend and fix the gingival flap, rather than simply pulling the suture together. Includes: Double papilla suspension suture (singleslingsuture) on a single tooth: utilizes the operative tooth to secure its two gingival papillae, proximal and distal, and can be used in the case of a unilateral flap or a bilateral flap. Continuousslingsuture: This is further divided into unilateral and bilateral continuous suspension sutures. When the surgical area involves more than one tooth, and the gingival flap on both sides of the buccal and lingual sides of the reset height is not consistent (such as the buccal side of the root to reset the flap, tongue side for the in situ reset suture, the height of the two sides is not consistent), then the unilateral continuous suspension suture can be used to the buccal and lingual side of the flap were fixed to their respective levels; and buccal flap for flap surgery, tongue (palate) side of gingival incision, this time only need to close the buccal side of the flap, but also can be used for the unilateral suspension of continuous suture. When the buccal and lingual gingival flaps are of the same height, bilateral continuous suspension sutures can be used, which should be placed around the proximal and distal mesial teeth for a week to strengthen the suspension effect and to avoid pulling the gingival flap on the opposite side. Bilateral suspension suture should be noted in the two ends of the neighboring teeth around the circle, in order to strengthen the role of fixed buccal and lingual gingival flap (c) horizontal mattress suture mattress suture (mattresssuture) is applicable to the two teeth between the larger gap or the gingival papilla is wider, in order to make the gingival flap can be better adhered to the bone surface, can be in the papilla at the level of a mattress suture. This method can be combined with continuous suspension suture. (D) anchor suture anchor suture (anchorsuture) is applicable to the last molar distal middle wedge-shaped flap of the suture, or with the missing tooth gap adjacent to the gingival flap closure. Note that the needle should be inserted as close to the tooth as possible in order to keep the gingival flap close to the tooth surface and to avoid the formation of a V-shaped gap in the gingiva adjacent to the tooth after healing. After each suture is completed, the gingival flap should be carefully examined to see if it is close to the bone surface, whether the gingival margin is curled, whether the bone surface is covered, and whether the tension is moderate, etc. If the gingiva is whitish, it means that the tension is too great. The gingival flap should also be gently compressed for a few moments to check whether the wound is oozing blood.