Mystery Prevails over Plasma Cell Gingivitis: A Case Report and A Review

Plasma cell gingivitis is a rare benign condition which presents as an enlargement of the gingiva, characterised by dense infiltration of plasma cells in the subepithelial connective tissue. Even after fifty years, since the first reported case, the etiology of many still remains obscure. It is characterized by sharply demarcated erythematous and edematous gingivitis often extending to the mucogingival junction. It may be related to specific allergen present in certain substances like chewing gum, pepper, tooth paste etc. This article features a case of plasma cell gingivitis (PCG) which presented itself without any obvious identifiable cause and which “refused” to heal with all conventional therapies.