Abstract
Reactive hyperplasia arises frequently in adult gingiva, but rarely in infant gingiva.
This paper reports on a case of fibrous hyperplasia of palatal gingiva in a 2 year-8 month-old girl and which contains histologically many epithelial islands. The islands were classified into 2 types: dental lamina-like and squamous epithelium-like.
Some squamous epithelium-like epithelial islands showed calcifications. The relationship of the covering epithelium (oral mucosa) and the epithelial islands were studied with 100 numbers of serial section under light microscopy in order to determine the origin of the epithelial islands, to discover if it is odontogenic epithelium or not. The results suggested that the epithelial islands in this case originated from the covering epithelium.
