Types of periodontal surgery Figure 25.1Gingivectomy. Figure 25.2(a–c)Apically repositioned flap. (a) inverse bevel incision to alveolar crest (dashed line), (b) flap moved apically (arrow), (c) flap sutured just above the alveolar crest. Figure 25.3(a–c)Modified Widman flap. (a) i...