Source:http://linkedlifedata.com/resource/umls/id/C0017573
MSH: Surgical excision of the gingiva at the level of its attachment, thus creating new marginal gingiva. This procedure is used to eliminate gingival or periodontal pockets or to provide an approach for extensive surgical interventions, and to gain access necessary to remove calculus within the pocket. (Dorland, 28th ed),NCI: A resective periodontal surgical procedure that removes gingival tissue.