Abstract:
BACKGROUND:The question of the "true" function of the maxillary sinus and the paranasal sinuses (PS) has been a controversial issue in the literature for decades, leading to many discussions and speculations. OBJECTIVE:This review briefly summarizes various theories on the possible physiology and functions of the maxillary sinus/PS that have been discussed over the centuries. MATERIALS AND METHODS:A literature search was conducted in PubMed using a combination of the search terms "physiology," "function," "maxillary sinus," and "paranasal sinuses." RESULTS:Current and scientifically evidenced theories are described. "Sinusology" is the science of the PS. The maxillary sinuses might simply serve to improve the respiratory function of the nose. A flow of inspiratory air does not occur. The maxillary sinuses are decisively involved in the production of nitrogen monoxide (NO) and thus in supporting the immune defense of the nasal cavity. The mucosa of the maxillary sinus continuously synthesizes NO and serves as a reservoir of NO. Other important functions are protection of the orbit and the brain in case of skull fractures, as well as weight reduction of the skull. CONCLUSION:The various theories about the function of the PS still raise many questions and their true function is yet not fully understood. Possible functions of the maxillary sinuses are local immune defense through the production of NO. The PS serve as a crumple zone for vital cerebral structures in the context of craniocerebral traumas. ZUSAMMENFASSUNG:HINTERGRUND: Schon seit vielen Jahrzenten stellt die Frage nach der „wahren“ Funktion der Kieferhöhle bzw. den Nasennebenhöhlen (NNH) einen Streitpunkt in der Literatur dar und hat zu vielen kontroversen Diskussionen sowie Spekulationen geführt. ZIEL: Das Review fasst kurz verschiedene Theorien über die mögliche Physiologie und mögliche Funktionen der Kieferhöhle/NNH zusammen, die über die Jahrhunderte bis heute diskutiert wurden. MATERIAL UND METHODEN:Eine Literaturrecherche bei PubMed wurde mit einer Kombination der Suchbegriffe „Physiologie“, „Funktion“, „Kieferhöhle“ und „Nasennebenhöhle“ durchgeführt. ERGEBNISSE:Die aktuellen und möglichst wissenschaftlich belegten Theorien werden beschrieben. Die „Sinusologie“ ist die Wissenschaft der NNH. Die Kieferhöhlen können einfach nur dazu dienen, die respiratorische Funktion der Nase zu verbessern. Eine Durchströmung mit inspiratorischer Luft findet nicht statt. Die Kieferhöhlen sind an der Produktion von Stickstoffmonoxid (NO) und damit der Unterstützung der Immunabwehr der Nasenhöhle entscheidend beteiligt. Die Mukosa der Kieferhöhle synthetisiert kontinuierlich NO und dient damit als Reservoir von NO. Weitere wichtige Funktionen sind der Schutz der Orbita und des Gehirn bei Schädelfrakturen sowie eine Gewichtsreduktion des Schädels. SCHLUSSFOLGERUNG:Die verschiedenen Theorien über die Funktion der Nasennebenhöhlen werfen auch heute noch viele Fragen auf, und die wahre Funktion ist nicht vollständig geklärt. Mögliche Funktionen der Kieferhöhlen bestehen bei der lokalen Immunabwehr durch die Produktion von NO. Die NNH dienen als „Knautschzone“ im Rahmen von Schädel-Hirn-Traumata.
journal_name
HNOjournal_title
HNOauthors
Sieron HL,Sommer F,Hoffmann TK,Grossi AS,Scheithauer MO,Stupp F,Lindemann Jdoi
10.1007/s00106-020-00869-2subject
Has Abstractpub_date
2020-08-01 00:00:00pages
566-572issue
8eissn
0017-6192issn
1433-0458pii
10.1007/s00106-020-00869-2journal_volume
68pub_type
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