The document discusses gingival recession, characterized by the apical movement of the gingival margin from the cemento-enamel junction, along with its definitions, classifications, etiology, prognosis, and treatment techniques. Various classification systems for gingival recession are highlighted, detailing the limitations and proposed modifications aimed at improving diagnosis and treatment outcomes. Treatment options range from non-surgical to surgical methods, emphasizing the importance of factors such as the degree of recession and the condition of nearby tissues.