Related Experiment Video
Updated: Feb 14, 2026

Author Spotlight: Development of a Novel Finite Element Analysis Model for Improved Orthognathic Surgical Techniques
Published on: October 20, 2023
[Surgically assisted rapid maxillary expansion. Effects on the nasal airways and nasal septum]
R Seeberger1, W Kater, M Schulte-Geers
1Klinik- und Poliklinik für Mund-, Kiefer- und Gesichtschirurgie, Universitäts-Kopfklinik Heidelberg, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Deutschland. robin.seeberger@med.uni-heidelberg.de
Background:
Surgically assisted rapid maxillary expansion (SARME) is a standardized method to treat cross bites in maxillofacial surgery. Changes to the nasal airways are assumed due to the anatomic dependence between the palate and the nasal floor.
Patients And Methods:
In this study 19 patients with a transverse deficit of the upper jaw underwent SARME. CT scans were performed 1 month pre- and 6 months postoperatively. Effects to the lower nasal airways, the nasal septum and the hard palate were subsequently evaluated.
Results:
The mean distraction width of the upper jaws was 5.84 mm (SD 2.19) postoperatively. In addition to the dentoalveolar gain in width, a significant increase in the nasal floor was observed (p<0.001). The anterior part of the nasal floor was increased by 14.11%. An anterior-caudal tilt of the upper jaw was observed in the anterior part measuring 1.5 mm (SD 1.05). No significant deviation of the nasal septum occurred.
Conclusion:
SARME has a significant effect on ear, nose and throat medicine. Nasal airways enlarge significantly, while no significant deviation of the nasal septum is observed.
Related Concept Videos
Nose and Nasal Cavity
Administering Oxygen by Nasal Cannula
Nasal Cannulas
A nasal cannula is a lightweight tube split into two prongs placed in the nostrils,...
Oxygen Delivering System I: Nasal Cannula and Face Mask
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
Heat and Free Expansion
Suctioning the Nasopharyngeal Airway
Equipment Required
Suctioning the Oropharyngeal Airway
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...

