For many years, the mouth and nose have been treated as separate systems. Patients with breathing problems are referred to an ENT specialist, while those with jaw or bite problems visit an orthodontist. But growing evidence suggests these structures are more closely connected than previously thought.
Recent research from CTOR Academy shows that the mouth, jaws, and airway develop as an interconnected system — and that changes in one may significantly influence the others.
A recent animal study, published in the Journal of Clinical Medicine, demonstrated that inadequate growth of the upper jaw may contribute to changes in the nasal cavity, including nasal septum deviation. These findings help explain why patients with narrow jaws often present with airway-related problems and highlight the importance of healthy jaw development during growth.
Building on this work, another CTOR study, published in the Medical Research Archives (European Society of Medicine), found that everyday biting and chewing forces also play an important role in shaping the nasal septum. By studying more than 200 orthodontic patients, researchers discovered that different bite patterns were associated with differences in nasal septum development, suggesting that normal chewing contributes to healthy facial and nasal growth.
Together, these findings reinforce the importance of early diagnosis and Interceptive Orthodontics & Dentofacial Orthopedics. Many developmental problems — such as narrow jaws, crossbites, and mouth breathing — can often be addressed during childhood using orthopedic appliances like maxillary expanders, helping guide normal facial growth and potentially improving oral function and airway health.
At CTOR, our goal is to combine scientific research with personalized patient care, advancing the understanding of how facial growth, bite function, and breathing work together to support lifelong health.
Related publications
- Mechanical Constriction of the Maxilla Alters Nasal Architecture. Journal of Clinical Medicine. 2026;15(14):5427. doi:10.3390/jcm15145427.
- Functional Incisal Loading Regulates Nasal Septum Cartilage Ossification. Medical Research Archives. 2026;14(5).
