Schneider membrane

from Wikipedia, the free encyclopedia

The respiratory epithelium of the maxillary sinus (maxillary sinus) is known in dentistry and oral and maxillofacial surgery as the Schneider membrane or Schneider membrane , which was first described by Konrad Viktor Schneider in 1664. Its Latin name is Membrana Schneideria .

Homeostasis of the maxillary sinus

The lining of the maxillary sinus with the respiratory epithelium ensures its homeostasis . A healthy maxillary sinus is therefore always sterile . The membrane is about 0.13 to 0.5 millimeters thick and histologically is a multi-row columnar epithelium . Ciliated cells with 100 to 150 cilia per cell alternate with goblet cells that produce serous and mucous mucus. The cilia reach a beat frequency of up to 1000 beats per minute. The production of serous and at the same time mucous mucus leads to a two-layer liquid film, which, in terms of fluid dynamics, can remove airborne contaminants, debris , bacteria , and also dead cells . The direction of the mucociliary transport through the Schneiderian membrane is directed towards the natural ostium of the maxillary sinus. In each maxillary sinus, up to 500 milliliters / day of seromucosal fluid is produced and transported through the semilunar hiatus to the nose and from there to the dorsal side.

The main part of the Schneider membrane is supplied by the arteria sphenopalatina , the terminal branch of the arteria maxillaris .

Sinus floor elevation

In the context of the procedure for building up the jaw for a dental implant , the Schneider membrane gained considerable importance in the sinus lift. The bone graft is placed between the floor of the maxillary sinus and Schneider's membrane.

See also

Schneider papillomas

Individual evidence

  1. ↑ Markus Jungehülsing: The sinus lift from the point of view of the ENT doctor. ZMK, 2010–2016.
  2. ↑ Uwe Gille: Cardiovascular and immune system, Angiologia. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 404-463.
  3. ^ Tiziano Testori, Massimo del Fabbro, Roberto Weinstein, Stephan Wallace: Sinusbodenelevantion. Surgical Techniques and Alternative Concepts. Quintessenz-Verlag, Berlin et al. 2010, ISBN 978-3-938947-21-0 .