• After eating, bacteria in food remain on the teeth, stick with saliva to form plaque, and coat the teeth. When your baby eats, especially foods made from starch and sugar, they will combine with plaque to create acid, which erodes the inorganic substances of tooth enamel and dentin, causing tooth decay.
• The highest cause of tooth decay is the habit of eating too much sugar such as cakes, candy, sweet fruits...
• In addition, when teeth are just starting to decay but not treating them early is the cause of tooth decay becoming more serious.

• Baby's teeth are sensitive or painful.
• Baby's breath has a persistent foul odor.
• With the naked eye, you can see that a tooth has decay, which is an ivory white spot or black spot on the tooth.

Regardless of the signs, parents should take their child to see a dentist soon.

• Tooth decay in children causes damage to the tooth pulp. If the root canal is not treated promptly, it can cause pulp inflammation and can lead to necrosis of the pulp, causing a tooth abscess (pus in the tooth).
• Tooth decay in children is also a cause of lymphadenitis, osteomyelitis, cellulitis, and maxillary sinusitis.
• Children with baby tooth infections, if not treated properly and promptly, will affect the development of permanent teeth.

• When tooth decay is just starting to appear, parents should take their child to get a dental filling early to avoid the infection spreading to other teeth, and at the same time help protect the child's tooth pulp and avoid sensitivity when eating and drinking.
• Treat tooth decay by applying fluoride gel or brushing your baby's teeth with a layer of medicine to seal the cavity. In cases of severe tooth decay and the need to scrape off loose dentin, the dentist will disinfect and sterilize the cavity and fill the cavity, or extract the tooth and replace the pulp.

• Parents should create a habit of proper oral care for their children right from the moment baby teeth come in. That is, brush your teeth twice a day, for at least 2 minutes each time.
• Proper oral hygiene from the time baby teeth grow plays an important role and affects the growth of the child's permanent teeth. Bacteria can move from baby teeth to permanent teeth while they are preparing to grow underneath, and can also be transmitted from parent to child. Therefore, parents need to brush their baby's teeth as soon as their first tooth grows, to prevent tooth decay in children later.
• Choose and let your child use a toothbrush that fits comfortably and can brush all surfaces of the teeth. Once children can brush their teeth on their own, parents still need to maintain and supervise their child's brushing habits until they are about 7 years old.
• Choose and use a toothpaste with the right amount of fluoride for your child.
• Combined with dental floss to help prevent plaque formation between teeth, helping prevent tooth decay in children.
• Get your baby into the habit of drinking water after every meal.
• Combine proper oral hygiene and proper nutrition. Limit your baby's intake of foods that contain a lot of sugar and starch because these are foods that create conditions for bacteria to grow and cause more plaque.
• Let your baby get used to and maintain nutritious foods that are good for oral health such as vegetables and fruits, because they can convert your baby's saliva into minerals, helping to limit plaque on the teeth. teeth, preventing tooth decay in children.