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July 17, 2025Cavities are one of the most common dental problems in children, but the good news is they’re also very preventable. Understanding how cavities form and knowing how to take care of your child’s teeth can make a big difference in their dental health. In this blog, we’ll walk you through everything you need to know about preventing kids’ cavities, using everyday tips that are easy to follow and work well at home.
Why Baby Teeth Matter
Some parents think baby teeth aren’t a big deal because they eventually fall out. But baby teeth are very important. They help your child chew food properly, speak clearly, and guide permanent teeth into the right position. If baby teeth get cavities or fall out too soon, it can cause problems for your child’s oral health down the road.
What Causes Cavities in Kids?
Cavities form when bacteria in the mouth feed on sugars from food and drinks. These bacteria create acids that wear down the tooth enamel, leading to tooth decay. Kids are at higher risk for cavities if they snack often, drink sugary beverages, or don’t brush and floss regularly.
Baby bottle tooth decay is another common problem, especially when babies are put to bed with a bottle of milk, formula, or juice. The sugars in these drinks stay on the teeth and give bacteria more time to grow.
How to Prevent Cavities in Kids
1. Start Oral Care Early
You can start caring for your child’s mouth even before their first tooth appears. Gently clean your baby’s gums with a soft cloth or infant toothbrush and water. Once teeth appear, brush twice a day using a small amount of fluoride toothpaste.
For children under three, use a smear of fluoride toothpaste (about the size of a grain of rice). For children three and up, a pea-sized amount is just right. Always help your child brush their teeth until they have the skill to do it well on their own, usually around age six to eight.
2. Floss Your Child’s Teeth
Once your child has two teeth that touch, it’s time to start flossing. Floss your child’s teeth once a day to remove food and plaque that a toothbrush can’t reach. This is key for preventing cavities between the teeth.
3. Practice Good Oral Hygiene
Brushing and flossing are the root of good oral hygiene. Make it part of your child’s daily routine and try to make it fun. Play a song while brushing, let them choose their toothbrush, or use a reward chart to build good habits.
4. Watch What They Eat and Drink
What your child eats matters just as much as how often they brush. Limit sugary snacks and drinks, including juice and soda. Offer water instead of sweetened drinks, and serve snacks like fruits, veggies, cheese, and yogurt, which are better for their teeth.
5. Schedule Regular Dental Checkups
Regular dental checkups are a big part of preventing cavities. Your child should see a dentist by their first birthday or within six months of their first tooth coming in. After that, regular visits every six months help keep their mouth healthy and catch small problems before they become big ones.
Dentists can also put sealants on the chewing surfaces of back teeth and offer fluoride treatments to strengthen tooth enamel and decrease the risk of tooth decay.

6. Avoid Baby Bottle Tooth Decay
Avoid putting your baby to bed with a bottle of milk, formula, or juice. If they need something to suck on for comfort, offer a pacifier or a bottle of water. This helps prevent baby bottle tooth decay and keeps their baby teeth healthy.
7. Lead by Example
Children learn by watching their parents. Brush and floss your own teeth in front of your child to show them it’s important. Make dental care a family activity so it feels normal and positive.
When to Ask for Help
If you notice white spots on your child’s teeth, pain when chewing, or sensitivity to hot or cold, these could be early signs of a cavity. Don’t wait. Book a dental appointment so the problem can be treated early.
Final Thoughts on Kids’ Cavities
Taking care of your child’s teeth doesn’t have to be complicated. Start early, stick to a routine, and get help from your dental team when needed. Baby teeth matter, and setting up good habits now helps protect their permanent teeth later on. With a few steps, you can prevent tooth decay, protect your child’s enamel, and build a strong foundation for lifelong dental health.
If you have questions or want to book a checkup, the team at Ovation Dental is here to help. We’re committed to helping families keep their smiles healthy and happy.