Why do my kids get cavities?
Cavities are caused by a bacterial infection on the teeth known as “caries”. Dental caries is the #1 childhood disease, five times more prevalent than #2, which is asthma. This infection in children is primarily caused by:
- Transmission: this infection is contagious! The most common route of transmission is termed “vertical transmission”, which means parents or primary caregivers infect their children.
- Prolonged acidic oral environment: this can be associated with a sugary/acidic diet or frequent nursing/bottle feeding. These factors can promote an acidic bacterial infection.
- Lack of good hygiene: keeping the oral environment clean and at an alkaline pH is important even prior to the first tooth erupting.
Facts about children with cavities
- Dental caries is the #1 childhood disease, 5 times more prevalent than asthma, which is #2.
- Effective caries prevention during pregnancy decreases the newborn child's risk of getting the caries infection.
- Many children have had to undergo general anesthesia, which is sometimes required to do dental work, before they are even five years old due to dental disease.
- 3 out of 4 kids will experience dental pain due to decay before graduating high school.
Expert Advice
- Visit a dentist who is performing “caries risk assessment”, where they evaluate what reasons are contributing to your child getting cavities, and offer treatment of the infection beyond drilling and filling.
- Limit not only sugary/carbohydrate containing items in your child’s diet, but also even non-sugar containing acidic beverages (i.e. diet sodas, coffee, tea, sparkling water, fruit juices).
- Xylitol is a very effective agent for limiting the acids produced by bacteria and comes in wipes, gums, sprays, mouth rinses, and toothpastes that are safe and that kids love.
- Supervise a hygiene program for your children including the use of alkaline pH and xylitol products.
- Understand that fluoride can be important, but is used to remineralize enamel and make it stronger. Fluoride's effectiveness at treating the bacterial infection has limits.
- Check with your local water supply company to find out if there is fluoride in your water.
- More information on caries risk assessment for kids can be found in this Policy Statement from the American Academy of Pediatric Dentistry.




