Collagenous Layer Covering the Crown Enamel of Unerupted Permanent Human Teeth

Science  25 Dec 1964:
Vol. 146, Issue 3652, pp. 1676-1678
DOI: 10.1126/science.146.3652.1676


A tissue layer, which was continuous with the cementum covering the roots, was found external to the crown enamel of normal, unerupted permanent human teeth. Light microscopy, x-ray diffraction, and amino acid analysis indicated that the major constituent of this tissue was collagen.