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Writer's pictureDr Helet

What Causes Bad Breath in Kids?

Bad breath, or halitosis, is very common and affects both adults and kids alike. It is normal to have bad breath from time to time, especially first thing in the morning or after eating foods like onions and garlic. There’s no reason to worry if your child occasionally has bad breath.


If, however your little one’s bad breath is persistent, it may need to be investigated.

Here are the most common reasons why your child may have bad breath:


1. Poor Oral Hygiene

When your child doesn’t brush and floss properly, food particles can get stuck between their teeth which causes plaque to build up. Plaque consists of various bacteria that cause tooth decay and gum disease. This may lead to a foul odour emanating from the mouth.


2. Dry Mouth and Mouth Breathing

When kids breathe through their mouths, whether when sleeping or because of a stuffy nose, it prevents them from generating saliva. Saliva is important to rinse and wash bacteria away, which cause bad breath.

3. Medication

Certain chronic medication can cause dry mouth this may leave an unusual smell in your child’s mouth.


4. Swollen Tonsils

Bacteria can collect in the pits of swollen tonsils and can cause bad breath.

5. Infections and Illness

Certain illnesses in children, especially upper respiratory, sinus or throat infections may lead to bad breath because of nasal congestion and mouth breathing. Bacteria also feed on the mucus produced by the body. This cause of bad breath usually resolves once the infection, illness or sores clear up.

How to Get Rid of Bad Breath in Kids?


In most cases, bad breath is treatable. Make sure your child is brushing and flossing regularly. They should brush for at least two minutes, twice a day, and floss at least once a day. Ensure that they brush their tongue every time they brush their teeth. You might also want to add an antibacterial mouth rinse to their routine.

It is important to stay hydrated. Water helps increase saliva production to wash away the bacteria that cause bad breath. Offer your child plenty of water throughout the day and try to avoid sugary and carbonated drinks.


Regular dental visits are an important part of your child’s overall oral and dental health. This allows your dentist/oral hygienist to identify and monitor potential problems, like plaque, calculus, cavities and the overall health of the gingiva (gums), before it becomes a problem. It is also a great opportunity to ask any questions you or your child may have.


If have any concerns about your little one’s bad breath, you can contact us on WhatsApp +2763 639 7839 or simply pop us an email: info@tinysmile.co.za


For more resources head to www.tinysmile.co.za and make sure to follow us on Facebook and Instagram for more TinySmile tips and treatment options.

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