9 Causes of Bad Breath in Babies & Toddlers

Several factors could contribute to bad breath. Here are some of the most common causes:

• Poor oral hygiene: If your child doesn't brush and floss their teeth frequently, bad breath can result. If plaque is not brushed away, it can irritate the gums, causing additional issues. The tongue can also harbour bacteria that produce foul odours and bad breath, so make sure your child is brushing their tongue as well.
• Dry mouth: Saliva helps to cleanse the mouth. When your child's mouth produces less saliva than usual, xerostomia (dry mouth) may occur, contributing to bad breath.
• Mouth breathing: When a child breathes through their mouth (due to a stuffy nose or as a sleep habit), it prevents saliva from washing away bacteria, promoting bad breath.
• Bacteria on the tongue: Most odour-causing bacteria reside on the tongue. If you don't brush your tongue, odour-causing bacteria will accumulate and cause bad breath.
• Infections in the mouth: Bad breath can also come about due to cavities, plaque buildup, mouth sores or oral surgery.
• A foreign object: Sometimes, a baby or toddler will place a foreign object (tiny toys, food particles, etc.) in their nose. A foreign object lodged in the nose can cause bad breath in children.
• Certain foods: If your child consumes foods with a strong odour, like garlic, onions or specific spices, these can impact the freshness of their breath.
• Medications: Sometimes, the way medication breaks down in the body can lead to bad breath. This process releases chemicals that may result in bad breath.
• An illness or condition: If your child is suffering from allergies, a sinus infection, tonsillitis or another condition, bad breath can occur.

Healthy teeth are integral to a child's overall health and well-being. You can help your child avoid bad breath by developing an oral care routine that includes the following:

• Follow the Australian Dental Association's recommendations and have your child brush twice daily with a pea-sized amount of fluoride toothpaste to promote fresh breath.
• Always remember to supervise young children so they do not swallow the toothpaste. When your child brushes their teeth, make sure they also clean their tongue, as bacteria can collect and grow there.
• Floss daily to remove odour-causing food particles from between the teeth. Remember to get a new toothbrush every few months. Worn bristles cannot effectively remove plaque and debris from the teeth.
• Avoid halitosis and other oral health concerns by scheduling regular checkups and professional cleanings with a dental health professional.

Most of the time, your child's bad breath will go away once you implement better oral hygiene. However, some children may experience chronic bad breath. If a dentist determines that your child's mouth is healthy, you may be referred to an appropriate medical professional for additional tests to diagnose the underlying cause of their halitosis.

Regardless of the cause of bad breath, teaching children how to form good dental care habits at an early age is vital in terms of maintaining their oral health as adults.