Restricted nasal respiration, influence on facial growth.

Used as models on restricted nasal respiration, 11 individuals with a unilateral inborn occlusion of the nose were examined with regard to growth of the mid-facial skeleton. The preference to oral breathing, also a fairly constant feature in patients with chronic or allergic rhinitis with hyperplasia of the pharynx tonsil, appeared to result in a significant underdevelopment of the maxilla in the saggittal plane.