GUIDE
Start the day the first tooth appears. Use a rice-grain-sized smear of fluoride toothpaste and a soft infant toothbrush. Twice a day.
The most common mistake parents make is waiting too long. Tooth decay can begin as soon as teeth appear, and fluoride toothpaste from day one is the recommendation from both the AAP and the AAPD.
The recommendation is clear and comes from every major dental and pediatric organization: start brushing the day the first tooth appears. Not when all the front teeth are in. Not when your baby can hold a toothbrush. Not when they turn one. The day the first tooth appears.
Many parents are surprised by this, especially the part about fluoride toothpaste. For years, some guidelines recommended using non-fluoride toothpaste for babies, and many "baby" toothpastes on the market are fluoride-free. But in 2014, the ADA updated its guidance to recommend fluoride toothpaste from the first tooth, and the AAP and AAPD followed suit. The reasoning is straightforward: fluoride prevents cavities, and cavities can begin as soon as teeth are present.
Before the first tooth appears, you can — and should — get your baby accustomed to having their mouth cleaned. Wiping the gums with a clean, damp cloth after feedings removes bacteria and milk residue and, importantly, gets your baby used to the sensation of oral care. This makes the transition to actual brushing much smoother when that first tooth arrives.
| Age | What to Do | Toothpaste | How Often | Notes |
|---|---|---|---|---|
| Before first tooth (0-6+ months) | Wipe gums with a clean, damp cloth or gauze after feedings | None needed | After feedings, especially before bed | Gets baby used to having their mouth cleaned and removes milk residue |
| First tooth to 12 months | Brush with a soft infant toothbrush (small head, soft bristles) | Rice-grain-sized smear of fluoride toothpaste | Twice daily — morning and bedtime | The amount is safe even if swallowed. Focus on all tooth surfaces. |
| 12-24 months | Continue with infant toothbrush. May transition to a small-headed toddler brush. | Rice-grain-sized smear of fluoride toothpaste | Twice daily | As more teeth appear, ensure you are reaching all surfaces, including between teeth. |
| 2-3 years | Small-headed toddler toothbrush. Begin teaching spitting. | Can increase to a pea-sized amount of fluoride toothpaste once child can spit reliably | Twice daily | Parent should still do the brushing. Let child 'help' with their own brush. |
| 3-6 years | Child-sized toothbrush. Child begins to participate more. | Pea-sized amount of fluoride toothpaste | Twice daily | Parent should still supervise and assist. Most children cannot brush effectively on their own until age 6-7. |
The technique for brushing baby teeth is simpler than you might think. The challenge is not the brushing — it is getting your baby to cooperate.
Positioning: The best position for visibility and control is laying your baby on your lap with their head toward you (the "knee-to-knee" position some dental offices use). An alternative is having your baby sit in your lap facing away from you, with their head tilted back. Both positions give you a clear view inside the mouth.
The toothbrush: Use a soft-bristled infant toothbrush with a small head. The bristles should be soft enough to bend easily against your fingertip. Replace the toothbrush every 3 months or when the bristles start to splay.
The toothpaste: A rice-grain-sized smear of fluoride toothpaste. This tiny amount is safe to swallow and provides fluoride protection for the enamel. Squeeze it onto the bristles and press it into them slightly (so it does not fall off before reaching the baby's mouth).
The technique: Gentle circular motions or short back-and-forth strokes. Cover all accessible surfaces: outer (facing cheek), inner (facing tongue), and top (chewing surface). Angle the brush toward the gum line at about 45 degrees.
The reality: With a baby, a quick but thorough pass over all the teeth in 30 to 60 seconds is a realistic and adequate goal. Do not stress about achieving a perfect 2-minute brushing with a squirming infant. Consistent daily brushing matters more than duration.
| Step | What to Do |
|---|---|
| Position | Lay your baby on your lap with their head toward you, or sit them in your lap facing away. You need to see inside their mouth clearly. |
| Amount of toothpaste | For children under 3: a tiny smear — about the size of a grain of rice. For children 3 and older who can spit: a pea-sized amount. |
| Angle | Hold the toothbrush at a 45-degree angle to the gum line. Brush gently in small circular or back-and-forth motions. |
| Surfaces | Brush all three accessible surfaces of each tooth: the outer surface (facing the cheek), the inner surface (facing the tongue), and the chewing surface (top). |
| Duration | Aim for about 2 minutes total, but with a baby, even 30 seconds of thorough brushing is better than nothing. |
| Gums | Gently brush the gum line where tooth meets gum. This is where plaque accumulates and where decay often starts. |
| Tongue | Gently brush or wipe the tongue to remove bacteria. |
The question parents ask most frequently about baby dental care is about fluoride. Is it safe? Do babies need it? Should I use fluoride-free toothpaste?
The evidence is unambiguous: fluoride prevents tooth decay, and the recommendation from the AAP, AAPD, ADA, and CDC is to use fluoride toothpaste from the first tooth. A rice-grain-sized smear for children under 3, and a pea-sized amount for children 3 and older who can spit.
The concern about fluoride in babies is swallowing. Since babies cannot spit, they swallow the toothpaste. But a rice-grain-sized amount contains a negligible amount of fluoride — far below any level that could cause fluorosis (cosmetic changes to developing teeth from too much fluoride). The risk of NOT using fluoride — tooth decay — is far greater than the risk of using the recommended amount.
If your community water supply is fluoridated, your baby is already receiving some fluoride through drinking water and formula preparation. If your water is not fluoridated (well water, non-fluoridated municipal supply, or primarily using bottled water), ask your pediatrician about fluoride supplementation starting at 6 months.
Logging when each tooth appears in tinylog helps you track your baby's dental development and reminds you to schedule that first dentist visit by age 1.
Start brushing with the first tooth. This is the single most important takeaway. Every day without brushing after the first tooth appears is a day bacteria are working on that enamel.
Use fluoride toothpaste. The rice-grain amount is safe to swallow. The protection it provides is significant. Fluoride-free toothpaste does not provide the same cavity prevention.
The bedtime brushing is non-negotiable. If you can only manage once a day, make it bedtime. No food or milk after brushing — only water.
Baby teeth matter. Decay in baby teeth is painful, can cause infections, and can damage the permanent teeth developing underneath. The idea that baby teeth "do not matter because they fall out" is a myth that leads to preventable suffering.
Schedule the first dentist visit by age 1. The AAP and AAPD recommend a dental visit by age 1 or within 6 months of the first tooth, whichever comes first.
During sleep, saliva production drops significantly. Saliva is the mouth's natural defense against bacteria — it washes away food particles and neutralizes acid. With less saliva at night, any bacteria or food residue on the teeth has hours to do damage. This is why the bedtime brushing is critical, and why you should not give milk or food after brushing at bedtime (water is fine).
Some parents worry about fluoride for babies. The evidence is clear: a rice-grain-sized amount of fluoride toothpaste is safe from the first tooth, even if the baby swallows it (the amount is too small to cause any concern). Fluoride is the single most effective weapon against tooth decay, and early exposure strengthens enamel as it develops.
Consistency matters more than perfection. A quick, imperfect brushing that happens every day is better than a thorough brushing that only happens when you remember or when your toddler cooperates. Build it into the bedtime routine: bath, pajamas, brush teeth, story, bed. The routine makes it expected rather than optional.
Parents sometimes think baby teeth do not need much care because they are temporary. But baby teeth serve critical functions: they hold space for permanent teeth, enable speech development, and allow proper chewing. Decay in baby teeth can cause pain, infection, and damage to the permanent teeth developing underneath. Taking care of baby teeth from day one prevents real problems.
This guide is for informational purposes only and is not a substitute for professional medical advice. If your baby has a fever of 100.4°F (38°C) or higher, is refusing to eat, or seems unusually unwell, contact your pediatrician — these symptoms are not typical of teething alone.
