Babies may experience bad breath under normal physiological conditions. The main cause of physiological halitosis is poor oral hygiene. If you do not rinse your mouth in time after feeding, the milk left in the mouth will ferment, resulting in bad smell.
Dry mouth is another cause. Babies secrete nearly 1 liter of saliva every day, which contains a variety of antibodies and enzymes that can wash and kill bacteria. Bad breath can also occur if the amount of saliva is reduced, the mouth is dry, and the self-cleaning function is reduced.
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