Ultrastructural Features of Cyclosporine A‐Induced Gingival Hyperplasia

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Abstract
The present work collected data on the ultrastructural features of the attached gingiva in kidney transplant patients who showed gingival hyperplasia following cyclosporin A (Cy A) treatment. Ultrastructural examination was carried out on biopsies of attached gingiva obtained from 8 male patients (30 to 60 years old) undergoing treatment at the Dental Clinic of the University of Ferrara. The data showed that, although many fibroblasts are present in Cy A‐induced hyperplasia, there is a particular abundance of amorphous substance compared to fibrous, as well as marked plasma cell infiltration. On the basis of the data collected, we hypothesize that the morphological features of the dimensional increase in gingival tissue associated with Cy A treatment in kidney transplant patients may be considered local manifestations of a systemic phenomenon. J Periodontol 1993; 64:1092–1097.

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