The document defines and classifies different types of gingival enlargement based on etiology and pathologic changes. It describes inflammatory enlargement including chronic, acute, and drug-induced types. It also covers enlargements associated with systemic diseases, neoplastic enlargements including benign and malignant tumors, and false enlargements. Grading systems and detailed clinical, histological, and radiographic features are provided for many conditions.

6. B). Generalized involving the gingiva throughout the mouth.