Histogenesis of the lateral periodontal cyst and the gingival cyst of the adult.

The clinical and morphologic similarities of the LPC and the GCA strongly suggest that these two cysts share a common histogenesis and represent the intraosseous and extraosseous manifestations of the same lesion. The most striking similarity is the morphologic resemblance of the clear cells of dental lamina rests of dental lamina rests to those lining the LPC and GCA. The common association of these clear-cell rests of dental lamina with both the LPC and the GCA, and observations on their natural history, suggest that they are the source of the epithelium of both the LPC and GCA.