Kids' Oral Hygiene Guide: Healthy Teeth at Every Age

Healthy adult teeth start with healthy baby teeth. Baby teeth help your child chew, speak clearly and smile with confidence, and they hold space for the permanent teeth coming in behind them. Cavities are one of the most common chronic diseases of childhood, but they are also almost entirely preventable. Below is how to care for your child's teeth at each age, from the first tooth to the teen years.

Why Oral Hygiene Matters So Much for Kids

Some parents think baby teeth do not matter because they fall out. In reality, children keep some baby teeth until about age 12, and decay in them can cause pain, infection, trouble eating and sleeping, missed school, and damage to the adult teeth developing underneath. Government data shows that about 15 percent of children ages 5 to 11 have at least one untreated cavity.

Good habits at home, combined with regular checkups and cleanings, protect your child's teeth now and set them up for a lifetime of healthy smiles. Our article on how poor dental care affects kids long-term explains what is at stake.

Oral Care by Age

Babies (birth to 12 months)

Before teeth appear, wipe your baby's gums with a soft, damp cloth after feedings.
As soon as the first tooth comes in, brush twice a day with a soft infant toothbrush and a smear of fluoride toothpaste the size of a grain of rice.
Do not put your baby to bed with a bottle of milk, formula or juice. Learn why in our article on baby bottle tooth decay.
Schedule a first dental visit by the first tooth or first birthday. See when your child should first see a dentist.

Toddlers (1 to 3 years)

Keep using a rice-grain smear of fluoride toothpaste, morning and night.
Brush for your child, lifting the lip to clean along the gum line where decay often starts.
Begin moving from bottle to cup around the first birthday.
Limit juice and sweet drinks, and offer water between meals.

Preschoolers (3 to 6 years)

Switch to a pea-sized amount of fluoride toothpaste and teach your child to spit it out.
Let them practice brushing, then finish the job yourself. Most kids do not have the coordination to brush well alone until around age six or later.
Start flossing once any two teeth touch. Our guide to when to start flossing and how to teach it can help.

School-age kids and teens

Brush twice a day for two minutes and floss once a day, with less supervision as they show they can do it well.
Ask about sealants when the permanent molars come in, usually around ages 6 and 12. Sealants protect the chewing surfaces where most cavities in kids start.
Wear a mouthguard for contact sports.
Keep up with checkups, especially if your teen has braces, which make brushing harder.

How to Brush Your Child's Teeth

Use a soft-bristled toothbrush sized for your child's mouth. Angle the bristles toward the gum line at about 45 degrees and use small, gentle circles on every surface: outside, inside and the chewing tops. Finish by brushing the tongue to help keep breath fresh. Brushing should last about two minutes, twice a day, with the bedtime brush being the most important. Replace the toothbrush every three months or after an illness. For more on picking the right one, read toothbrushes for your children and toothbrush care and replacement.

How Much Fluoride Toothpaste to Use

Fluoride strengthens enamel and helps reverse the earliest stage of decay. The amount matters for young children: a rice-grain smear for kids under three, and a pea-sized amount for ages three to six. Keep toothpaste tubes out of reach of little ones. In-office fluoride treatments add extra protection, especially for children at higher risk of cavities. Our article what is fluoride? explains how it works.

Food, Drinks and Snacking

What and how often your child eats affects their teeth as much as brushing does. Every time kids snack on sugary or starchy foods, mouth bacteria produce acid that attacks the enamel for a while afterward. Frequent grazing and sipping sweet drinks throughout the day keep teeth under attack.

Offer water and milk instead of juice, soda and sports drinks. Read how bad soft drinks are for teeth.
Serve sweets with meals rather than as stand-alone snacks.
Choose tooth-friendly snacks like cheese, yogurt, vegetables and fruit. Here is our list of the best foods for kids' healthy teeth and snacks that cause cavities.
Watch out for sticky foods like fruit snacks and gummies, which cling to teeth.

Five Simple Ways to Protect Your Child's Teeth

Brush twice a day with the right amount of fluoride toothpaste.
Floss once a day as soon as teeth touch.
Limit sugary drinks and between-meal snacks.
Get sealants on permanent molars and a mouthguard for sports.
See a pediatric dentist every six months.

Why Regular Pediatric Dental Visits Matter

Even with great home care, professional cleanings remove plaque and tartar that brushing misses. Checkups let us catch cavities while they are tiny, apply fluoride and sealants, watch how teeth and jaws are developing, and give you advice tailored to your child's age and risk. Between visits, watch for these signs your child needs a dentist. Regular visits also help children get comfortable at the dentist as they grow. If you are wondering why a children's specialist is worth it, read why choose a pediatric dentist.

Kids' Dental Care in Idaho Falls

At Baker Pediatric Dentistry, we help families in Idaho Falls and nearby communities like Ammon keep their kids' smiles healthy, from the first tooth through age 21. To schedule a cleaning and checkup, call (208) 524-5050 or contact our office.

‍