title: COLLAGENOUS LAYER COVERING THE CROWN ENAMEL OF UNERUPTED PERMANENT HUMAN TEETH.
abstract: 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.
mesh_terms: D000596:Amino Acids; D001641:Bicuspid; D002623:Chemistry Techniques, Analytical; D002648:Child; D003094:Collagen; D003442:Crowns; D003739:Dental Cementum; D003743:Dental Enamel; D003746:Dental Enamel Proteins; D006653:Histology; D006801:Humans; D014961:X-Ray Diffraction
chemical_list: D000596:Amino Acids; D003746:Dental Enamel Proteins; D003094:Collagen
keywords: AMINO ACIDS; BICUSPID; CHEMISTRY, ANALYTICAL; CHILD; COLLAGEN; DENTAL ENAMEL PROTEINS; HISTOLOGY; X-RAY DIFFRACTION