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February 5, 2026BMC Oral Health1 citationsOpen Access

Computational fluid dynamics simulation of upper airway flow and soft tissue deformation in a mouth-breathing patient: a case study

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WJWei JiWXWenting XieYCYangyang Cui

Key Points

  • The study aims to investigate airflow dynamics and soft tissue behavior in mouth-breathing individuals.
  • Conducted a computational fluid dynamics simulation
  • Analyzed airflow velocity and pressure in the upper airway
  • Examined soft tissue displacement during oral breathing
  • Increased airflow velocity observed in mouth-breathing conditions
  • Higher negative pressure noted in the palatopharyngeal and epiglottic regions
  • Greater posterior displacement of the tongue linked to airway collapse susceptibility

Abstract

This preliminary simulation suggests that, within the constraints of our model, oral breathing is associated with increased airflow velocity, higher negative pressure in the palatopharyngeal and epiglottic regions, and a greater posterior displacement of the tongue. These factors may collectively increase the susceptibility to pharyngeal airway collapse.

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Cite This Study

Ji et al. (2026) studied this question.

synapsesocial.com/papers/69843360f1d9ada3c1fb07c2https://doi.org/10.1186/s12903-026-07748-2
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