Common and less common gingival overgrowth conditions.

Gingival enlargement is caused by some local and systemic pathologic conditions. Clinical manifestations vary and depend on the underlying defects. Diagnosis of these abnormalities and their relationship to underlying systemic conditions is essential prior to establishment of any treatment. Several gingival overgrowth conditions resulting from various causes are included in this review. Some conditions are rare and appear with clinical features interesting to both dentists and dermatologists. A brief review of causes, pathogenesis, and differential diagnosis is presented.