Root skin

This article covers the periodontal skin of the tooth. For the root skin in botany see Rhizodermis . For the tooth structure of mussels, see periodontal bone (mussels) .

As periodontal ligament ( synonym periodontium , periodontal or periodontal ligament , the periodontal ligament , Alveolardentalmembran ) that is the connective tissue of the periodontal apparatus referred to.

The connective tissue fibers consist of collagen fiber bundles ( Fibrae cementoalveolares or Sharpey fibers ) and bridge the gap of a few tenths of a millimeter between the tooth cement of the tooth root and the wall of the tooth socket . As a result, the tooth is anchored to a limited extent in the tooth socket by means of a so-called "wedge" ( gomphosis ).

The fibers of the periodontal membrane are aligned so that all forces acting on the tooth are converted into tensile forces on the bone.

Since these fibers are not stretchable, they stretch out of their corrugated shape in order to pass on the tensile forces. The jawbone is protected from mechanical destruction and bone-forming cells are stimulated to support bone formation. Small blood and lymph vessels also run in the periodontal membrane .

literature

• F.-V. Salomon: teeth . In: Salomon, F.-V. u. a. (Ed.): Anatomy for veterinary medicine. Enke-Verlag, Stuttgart 2004, pp. 251-264. ISBN 3-8304-1007-7