47 children had breathing mode (whether nose or mouth) assessed along with measurements of facial development. The researchers attempted to correlate the effects of nasal obstruction on development of the face. Mouth breathing children, in comparison to nose breathing were more likely to have a longer facial structure.
Children with mouth breathing have shown a correlation with abnormal orofacial growth.
Avail of Patrick McKeown’s free online breathing training for children.
Baumann I, Plinkert PK. Der Einfluss von Atemmodus und Nasenventilation auf das Gesichtsschädelwachstum [Effect of breathing mode and nose ventilation on growth of the facial bones]. HNO. 1996 May;44(5):229-34. German. PMID: 8707626. https://pubmed.ncbi.nlm.nih.gov/8707626/
Torre C, Guilleminault C. Establishment of nasal breathing should be the ultimate goal to secure adequate craniofacial and airway development in children. J Pediatr (Rio J). 2018;94:101—3. https://pubmed.ncbi.nlm.nih.gov/28859912/
Harari D, Redlich M, Miri S, Hamud T, Gross M.The effect of mouth breathing versus nasal breathing on dentofacial and craniofacial development in orthodontic patients.Laryngoscope 2010;120:2089–2093. https://pubmed.ncbi.nlm.nih.gov/20824738/