Surgical intervention of mucosal fenestration in a maxillary premolar: a case report.

Labial mucosal fenestration of the root apex is an uncommon occurrence. An unusual case involving a maxillary right first premolar is described. When presented, the tooth was nonvital with the buccal root apex readily seen through a soft tissue and bone fenestration. Conventional endodontic treatment with gutta percha failed to resolve the problem. Periodontal surgery with a laterally positioned pedicle flap was thus scheduled. At the 1-month recall, complete healing was evident in the surgical site, and the fenestrated area of the maxillary right first premolar was filled with healthy mucosal tissue. One-year postoperatively, the mucosa remained covered, and there was radiographic evidence of bone infilling in the periapical region.