When Your Child Should Begin Brushing & Flossing

March 1, 2026

Kid brushing their teeth.

Establishing good oral hygiene habits early is essential for your child’s long-term dental health. Many parents wonder when to begin brushing and flossing their child’s teeth. The answer may be sooner than you think; starting early helps prevent cavities and sets the foundation for a lifetime of healthy smiles.

When to Start Brushing

You should begin cleaning your child’s mouth even before their first tooth appears. Gently wiping their gums with a soft, damp cloth after feedings helps remove bacteria and gets them used to oral care.

Once the first tooth erupts—usually around six months of age—it’s time to start brushing. Use a small, soft-bristled toothbrush and a tiny smear of fluoride toothpaste (about the size of a grain of rice). Brush twice a day, especially before bedtime.

As your child grows, you can increase the amount of toothpaste to a pea-sized amount around age three, as long as they can spit it out.

When to Start Flossing

Flossing should begin as soon as your child has two teeth that touch. This is because toothbrush bristles can’t effectively clean between tight spaces where plaque and food particles can get trapped.

At first, you’ll need to floss your child’s teeth for them. Floss picks designed for children can make the process easier and more comfortable. As your child gets older and develops better coordination, you can gradually teach them to floss on their own—usually around ages 6 to 10.

Making It a Routine

Consistency is key when it comes to oral hygiene. Brushing twice a day and flossing once daily should become part of your child’s routine, just like getting dressed or going to bed.

Supervise brushing until your child can do it effectively on their own, which is often around age 7 or 8. Even then, it’s a good idea to check that they’re doing a thorough job.

Tips to Make It Easier

Making brushing and flossing fun can encourage your child to stick with the habit. Let them choose their toothbrush, play music while brushing, or use a reward chart to track their progress.

Positive reinforcement goes a long way in building healthy habits.

Starting brushing and flossing at the right time helps protect your child’s teeth from decay and builds lifelong habits. Early care also makes dental visits easier and more positive. By introducing good oral hygiene early and staying consistent, you’re giving your child the tools they need for a healthy, confident smile that lasts a lifetime.

About the Practice

At All About Kids Dentistry, we believe when your child has a regular oral care routine, their chances for developing dental problems are significantly lower. That’s why we practice and preach preventive dentistry! Our dentists are board-certified in pediatric dentistry and are accommodating to kids and parents alike. Don’t hesitate – book online with us or call us at (847) 994-3551.