This case reports a unique presentation of two different clinical entities amidst few similarities and differences. Usually, aggressive periodontitis and gingival fibromatosis occur independently. Their simultaneous occurrence is rarely found. This report deals with the clinical features and management aspect of such a case.

Gingival fibromatosis is characterized by fibrotic enlargement of the gingiva that can occur as inherited or sporadic form. Inherited form can be an isolated trait or as a component of a syndrome. This article reports a 35 year old male patient affected by gingival fibromatosis associated with hemiosseous hyperplasia of mandible, maxilla, and zygoma on the right side, viral papillomatosis of maxillary anterior gingiva, fissured tongue and congenitally missing anterior teeth. The patient was subjected to phase I and phase II periodontal therapy. There was no evidence of recurrence of the enlargement after one year but the papillomatosis recurred. Gingival fibromatosis has been reported to be associated with various other abnormalities but not with those described in our case. This observation raises the possibility that the coexistence of these entities in our case may represent a new syndrome.

Zimmermann–Laband syndrome is a rare condition which manifests as hereditary gingival tissue hypertrophy along with other clinical features. Till date, only few cases have been reported in the literature. This case report focuses on an extremely rare presentation of Zimmermann–Laband syndrome in a twin. There has not been a single case report of Zimmermann–Laband syndrome in twins.