Malocclusion and Respiratory Efficiency: How Jaw Morphology Shapes Airway Patency and Athletic Performance
DOI:
https://doi.org/10.12775/QS.2026.76.75805Keywords
malocclusion, upper airway patency, athletic performance, VO 2maxAbstract
Background. The structural boundaries of the stomatognathic system represent a foundational framework for human respiration. Evolutionary shifts toward reduced masticatory loads have increased the prevalence of dental malocclusions and skeletal discrepancies, such as Class II retrognathia, which inherently restrict the pharyngeal airway space (PAS).
Objectives. This paper investigates the biomechanical and physiological pathways through which maxillomandibular morphology modulates upper airway patency, alters breathing mechanics, and subsequently impacts downstream athletic performance and aerobic capacity (VO2 max).
Materials and Methods. A comprehensive review and synthesis of contemporary interdisciplinary literature was conducted, integrating data from 3D Cone-Beam Computed Tomography (CBCT) structural imaging, cardiopulmonary exercise testing (CPET), and neuromuscular sports dentistry.
Results. Clinical evidence demonstrates that skeletal constraints induce chronic compensatory mouth breathing and forward head posture (FHP), which bypass the physiological benefits of sinus-derived nitric oxide (NO) and elevate respiratory muscle fatigue. While recent empirical findings suggest that static dental malocclusion alone does not uniformly impair maximal aerobic capacity in young athletes, dynamic modifications of mandibular positioning significantly optimize airway volumetric capacity, neuromuscular torque, and oxygen uptake kinetics during maximal physical exertion.
Conclusion:. Jaw morphology holds a profound influence over respiratory efficiency. Transitioning from static dental paradigms to dynamic airway-centric interventions, such as custom athletic orthotics or skeletal expansion, offers a vital, non-invasive avenue for maximizing long-term athletic potential and metabolic recovery.
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