Oral Hygiene Routines for Kids: A Step-by-Step Guide

Establishing a strong foundation for oral hygiene from an early age can help protect your child’s smile for years to come. Good oral hygiene habits help prevent cavities, gum disease, and other common dental problems while teaching children how to care for their teeth as they grow.

But a child’s dental needs change considerably between infancy and the teenage years. A baby with one new tooth needs a very different routine from a 10-year-old with permanent molars or a teenager with braces.

As your trusted pediatric dental practice, we want to make caring for your child’s smile easier. This guide covers age-appropriate oral hygiene routines for kids, including brushing, flossing, fluoride, diet, dental visits, and ways parents can help children develop healthy habits.

Infants (0-1 Year)

Good oral care begins before your baby’s first tooth arrives. Starting early helps make mouth cleaning a familiar part of your baby's daily routine. 

• Clean Your Baby’s Gums: Before teeth emerge, gently wipe your baby’s gums with a clean, soft, damp cloth or gauze. This can help keep the mouth clean while getting your baby accustomed to having their gums and mouth cared for.
• Start Brushing With the First Tooth: Once the first tooth appears, begin brushing twice a day with a small, soft-bristled toothbrush designed for babies. Use a tiny smear of fluoride toothpaste - about the size of a grain of rice. Gently brush the front, back, and chewing surfaces of any erupted teeth.
• Avoid Putting Babies to Bed With Sugary Drinks: Avoid putting your baby to sleep with a bottle containing milk, formula, juice, or other sugary beverages. Prolonged exposure to these liquids can increase the risk of tooth decay. If your child uses a bottle at bedtime, talk with your pediatric dentist about ways to transition away from the habit.
• Ask About Fluoride: Fluoride helps strengthen tooth enamel and protect against cavities. Your child’s fluoride needs can depend partly on your local water supply and other sources of fluoride. Rather than starting fluoride supplements on your own, ask your pediatric dentist whether your child needs additional fluoride. Learn more about the role of fluoride in cavity prevention.
• Schedule the First Dental Visit: Early dental visits allow your pediatric dentist to check your baby’s developing teeth and mouth while giving you personalized advice about brushing, fluoride, feeding habits, teething, and cavity prevention.

Toddlers (1-3 Years)

The toddler years are an important time for establishing brushing as a normal part of morning and bedtime routines.

• Brush Twice Every Day: Parents should brush a toddler’s teeth twice daily with a soft-bristled toothbrush. For children younger than 3, use only a rice-grain-sized smear of fluoride toothpaste. Brush all accessible surfaces of the teeth, paying particular attention to the gumline and back teeth. Toddlers often want to do things themselves, so allowing your child to hold the toothbrush or practice brushing can encourage independence. However, parents should still perform or finish the actual cleaning because young children do not yet have the dexterity to brush thoroughly. For ideas on choosing toothbrushes, toothpaste, and other child-friendly products, see our guide to oral hygiene products for kids.
• Start Flossing When Teeth Touch: Once two teeth touch each other, a toothbrush may no longer clean the space between them effectively. That is when flossing becomes important. Parents can use traditional floss or child-friendly flossers depending on what works best for their child. Read more about the right way to floss your child’s teeth.
• Make Brushing Predictable: Toddlers may resist brushing, especially when they are tired. Making it part of the same routine every morning and evening can reduce battles over time. Try letting your toddler choose between two toothbrushes, play a short brushing song, brush together as a family, or let your child practice first before you finish the job.
• Pay Attention to Snacks and Drinks: Frequent exposure to sugar can increase the risk of cavities. Instead of allowing children to snack or sip on sugary beverages throughout the day, establish regular meals and snack times when possible. 

Preschoolers (3-5 Years)

Preschoolers often want to brush their own teeth. This is a great opportunity to encourage independence - but they still need adult help.

• Use a Pea-Sized Amount of Toothpaste: Beginning around age 3, children can generally use a pea-sized amount of fluoride toothpaste. Teach your child to spit out the toothpaste rather than swallow it.
• Let Your Child Practice, Then Check: Allow your preschooler to brush independently so they can practice the habit. Afterward, a parent or caregiver should check their teeth and help brush any areas they missed. Pay particular attention to the back teeth, inside surfaces, and gumline.
• Continue Daily Flossing: Floss between teeth that touch at least once a day. Children at this age usually need an adult to do the flossing or provide substantial assistance.
• Keep Brushing Fun: Children are more likely to cooperate when brushing feels positive and predictable. A two-minute timer, favorite song, sticker chart, or choosing a toothbrush featuring a favorite character can help. Parents can also model good behavior by brushing alongside their children.
• Maintain Regular Dental Visits: Continue bringing your child to their pediatric dentist for routine examinations and preventive care. These appointments allow the dental team to monitor tooth development, check for cavities, assess oral hygiene, and provide personalized recommendations.

Discover fun ways to teach young children about dental health and care on our blog.

School-Age Kids (6-12 Years)

Between ages 6 and 12, children's mouths undergo significant changes. Baby teeth fall out, permanent teeth erupt, and children gradually become more responsible for their own oral hygiene. This is also an important period for protecting permanent teeth that your child will ideally keep for life.

• Brush for Two Minutes, Twice a Day: Teach your child to brush for approximately two minutes in the morning and before bed. They should clean the outer, inner, and chewing surfaces of every tooth. Encourage them to pay special attention to the gumline and hard-to-reach back molars. Even if your child brushes independently, check their technique periodically. Some children need supervision longer than others.
• Pay Special Attention to Permanent Molars: Permanent first molars typically emerge toward the back of the mouth during the early school years. Because these teeth erupt behind the baby teeth rather than replacing them, parents may not immediately notice them. Their grooves and pits can trap plaque and food, making careful brushing especially important.
• Floss Every Day: Children should clean between touching teeth daily. Depending on your child’s dexterity, you may still need to help with flossing. Traditional floss, floss holders, or other dentist-recommended interdental cleaners may make the process easier.
• Ask About Dental Sealants: Dental sealants are thin protective coatings applied to the chewing surfaces of certain back teeth. They can help prevent food and bacteria from settling into deep grooves that are difficult to clean with a toothbrush. Ask your pediatric dentist whether sealants are appropriate for your child's permanent molars.
• Protect Teeth During Sports: Children who participate in sports or recreational activities that could involve contact or falls may benefit from a properly fitting mouthguard. A mouthguard can help protect the teeth, lips, cheeks, and other oral structures from injury. Ask your dentist which type is appropriate for your child and their activities.
• Consider Orthodontic Development: As permanent teeth emerge, your dentist can monitor your child's bite, jaw development, crowding, and tooth alignment. If potential concerns appear, your child may benefit from an orthodontic evaluation.

Teenagers (13+ Years)

By the teenage years, kids should be increasingly responsible for their own oral hygiene. However, busy schedules, frequent snacking, sports, orthodontic treatment, and changing diets can introduce new challenges. Parents can help by reinforcing the importance of consistent care while allowing teens to take ownership of their routine.

• Maintain the Basics: Teenagers should continue brushing twice a day for two minutes with fluoride toothpaste and cleaning between their teeth daily. Brushing before bed is particularly important. Skipping nighttime brushing allows plaque and food debris from the day to remain on the teeth overnight.
• Take Extra Care With Braces: Braces create additional places where plaque and food can collect. Teens undergoing orthodontic treatment should carefully clean around brackets and wires according to their dentist's or orthodontist's instructions. Special floss threaders, interdental brushes, or other orthodontic cleaning products may be recommended.
• Watch Sugary and Acidic Drinks: Soda, sports drinks, energy drinks, and other sweetened or acidic beverages can increase the risk of enamel erosion and tooth decay, particularly when teens sip them frequently throughout the day. Encourage water as the primary everyday beverage and balanced meals and snacks that support dental and overall health. Read more about healthy eating habits for kids' teeth.
• Wear a Mouthguard for Sports: Teen athletes should use an appropriate mouthguard for activities where dental injuries are possible. Teens with braces may need a mouthguard specifically designed to accommodate orthodontic appliances.
• Continue Regular Dental Visits: Even teenagers with excellent brushing habits need professional dental care. Regular appointments allow the dentist to check for cavities and gum problems, evaluate orthodontic concerns, monitor developing wisdom teeth, and reinforce preventive habits before teens transition into adulthood.

Building Healthy Habits for a Lifetime

Healthy smiles are built through small habits repeated every day. Starting oral care early, using fluoride toothpaste appropriately, brushing twice daily, flossing between touching teeth, making thoughtful food and drink choices, and keeping up with dental visits can help protect your child's teeth from infancy through the teenage years.

Every child is different, and their dental needs can change as they grow. If you have questions about brushing, flossing, fluoride, tooth development, or your child's oral hygiene routine, our pediatric dental team is here to help.

Happy brushing!