HISTOLOGY . If asection he made vertically through a tooth all the exposed
See also:part or
See also:crown is seen to be covered with
See also:enamel, which, microscopically, is composed of a number of
See also:fine hexagonal prisms arranged at right angles to the
See also:surface of the tooth, and formed chiefly of
See also:Cement or Alveolar periosteum crustapetrosa or
See also:root-membrane From
See also:Birmingham, in
See also:Cunningham's Text-
See also:Book of Anatomy . its various parts, and its structure . calcium phosphate with small amounts of calcium carbonate, magnesium phosphate and calcium fluoride, but containing practically no organic
See also:matter . The enamel rests on the " dentine," of which hard yet elastic substance by far the greater part of the tooth is composed . It is made of the same salts as the enamel, but contains in addition a
See also:deal of organic matter and forms a structureless mass through which the fine " dentinal tubes " run from the pulp cavity to the periphery . Surrounded by the dentine is the " pulp cavity," which is filled by the tooth pulp, a highly vascular and
See also:nervous mass of branched connective tissue cells, which, in a
See also:young tooth, has a layer of
See also:epithelial cells, the " odontoblasts, " lying close against the
See also:wall of the cavity and forming new dentine . Slender processes (" Tomes's fibrils ") project from these cells into the dentinal tubes, and are probably sensory . A nerve and artery enter the
See also:apex of the root of the tooth, but it is not understood how the nerve ends . Surrounding the dentine where it is not covered by enamel is the " cement " or " crusta petrosa," a thin layer of bone which is only separated from the bony socket by the alveolar periosteum .
HISTIAEUS (d. 494 B.c.)
HISTOLOGY (Gr. Ler6c, web, tissue, properly the web...
There are no comments yet for this article.
Do not copy, download, transfer, or otherwise replicate the site content in whole or in part.
Links to articles and home page are encouraged.