Abnormalities of maxillofacial development caused by sleeping with the mouth open are restored or improved by orthodontic treatment or combined orthodontic-orthognathic treatment after the etiology is removed.
The main causes of open mouth breathing are deviated nasal septum, enlarged turbinates, nasal polyps, rhinitis or adenoid hypertrophy. The above causes can lead to airway obstruction and have to breathe through the mouth. For example, adenoid hypertrophy is mainly a pathological hyperplasia of the adenoids due to repeated stimulation by inflammation, causing nasal congestion and open-mouth breathing. Deviated nasal septum, enlarged turbinates, nasal polyps, rhinitis, etc. can also lead to insufficient nasal breathing ventilation, so that you have to open your mouth to breathe. It is recommended to consult the otorhinolaryngology department as soon as possible to find out the cause of the symptoms of open mouth breathing, and then go to the orthodontics department for orthodontic treatment, which can usually improve the situation.
If not treated actively and delayed until adolescence or adulthood, the deformity of upper and lower jaws, teeth and craniofacial can be so serious that it cannot be solved by orthodontics alone.