The inhaled air is filtered and warmed up inside the nose. For that the nasal passage must be clean and healthy, especially for infants and children.
If baby is not able to breathe through his nose, he will breathe through his mouth, such baby sleeps with his mouth opened.
Those children are at higher risk of:
Because cold and unfiltered air gets into babies throat, bronchia and lungs.
The babies immune system is immature and air pathogens enter the body through the mouth and spread fast, which lead to different infections.
Swallowing and tasting the food.
Washing away food and plaque from the teeth.
Neutralizing acids that harming tooth enamel.
Increasing gum diseases and tooth decay.