Evaluation of posterior airway space after setback surgery by simulation
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The possible negative outcomes of mandibular setback surgery (MSS) on the upper airway (UA) have become an important issue in recent years. The purpose of the present study was to compare the different amounts of MSS and to confirm the accepted maximum amount of mandibular setback by using Computational Fluid Dynamics (CFD) method. An anatomically similar UA model was constructed from magnetic resonance images of a systemically healthy individual. Two out of six models were kept as control models and the remaining four models were created to represent MSS scenarios with different amounts to correct Class III skeletal abnormality. The airflow was assumed laminar, incompressible, and the surrounding soft tissue was assumed to be linear elastic. The sixth model that was representative of 15 mm of MSS showed statistically significant differences from the other models (p < 0.05). No significant differences were observed among other models in terms of all the parameters (p > 0.05). CFD has been recently used in researches by modeling the UA flow; however, to the best of our knowledge, none of the studies have proved the maximum limits of MSS amounts with this technique.
KeywordsMandibular setback Upper airway Finite element method Computational fluid dynamics
The authors would like to thank Canan Erdogan and Aksel Fenerci for the technical writing assistance.
Compliance with ethical standards
Conflicts of interest and source of funding
The authors declare that they have no conflict of interest.
- 5.Radhakrishnan H, Kassinos S (2009) CFD modeling of turbulent flow and particle deposition in human lungs. Conf Proc IEEE Eng Med Biol Soc 2009:2867–2870Google Scholar
- 22.Burzdzius V. (2013) Effect of orthognathic surgery on the upper airway system. [dissertation]. Tampere University of TechnologyGoogle Scholar
- 28.Kuruppumullage DN (2010) Biomechanical models of human upper and tracheal airway functionality. [dissertation]. University of Central FloridaGoogle Scholar