Should I Be Brushing My 1-Year-Old’s Single Tooth?

Medically Reviewed by Dr. Ray Klein, DDS on September 22, 2026

Yes, you should be brushing your one-year-old’s single tooth, starting from the day it breaks through the gums. Even one tooth can develop a cavity, and brushing twice a day protects it while teaching your child what oral care feels like from the very beginning.

At Silicon Beach Pediatric Dental, we talk with parents about early tooth care every day. Dr. Ray Klein and Dr. Hayley Botwin help families in Culver City understand that caring for baby teeth starts with the very first one. We are here to guide you through these early stages and answer your questions about keeping your toddler’s smile healthy.

Why You Should Brush Your Child’s First Tooth

Your child’s first tooth may seem small, but it is doing important work. Starting dental care early might feel unnecessary when your little one only has a tooth or two, but baby teeth arrive already formed beneath the gums, ready to erupt around six months of age. Once a tooth appears, it can develop a cavity just like an adult tooth can.

Decay happens when sugar sits on teeth. Babies and toddlers drink milk or eat snacks throughout the day, which means their teeth are exposed to sugar often. Without brushing, those sugars feed the bacteria living in the mouth, and the bacteria produce acid that attacks tooth enamel. Even breast milk and formula contain natural sugars that can contribute to decay when left on teeth overnight.

Beyond preventing cavities, brushing your one-year-old’s tooth builds comfort with oral care. Toddlers who get used to having their teeth brushed early on tend to cooperate better as they grow older, since brushing becomes a normal part of the routine rather than something new to resist at age two or three.

How to Brush Your Toddler’s First Tooth

Brushing a one-year-old’s tooth takes the right tools and a bit of patience. While every child is different, the following approach works well for most families.

Getting the Right Setup

Use a soft-bristled baby toothbrush or a clean, damp washcloth. For children under three, only a tiny smear of fluoride toothpaste is needed, about the size of a grain of rice, not a pea-sized amount. According to the American Academy of Pediatrics, this smaller amount protects against cavities while limiting how much fluoride a toddler swallows before they have learned to spit.

You may also come across guidance from the CDC suggesting parents check with their child’s doctor or dentist before starting fluoride toothpaste under age two. Both positions come from credible sources, and if you are ever unsure which approach is right for your child, ask us at your next visit. We can make a recommendation based on your child’s cavity risk and the fluoride level in your local water.

The Brushing Process

Brush the tooth twice a day, once in the morning and once before bed. Bedtime brushing matters most, since saliva flow drops during sleep, which gives bacteria more time to work. Hold your child comfortably, perhaps sitting them on your lap facing away from you so you can see into their mouth.

Do not worry if your child does not cooperate perfectly. Most one-year-olds squirm, close their mouths, or try to grab the toothbrush, and that is completely normal. Keep the session brief, stay calm, and make it as pleasant as you can. A good rule of thumb is to make the toothbrush the last thing to touch your child’s teeth each night, ahead of any bottle, snack, or drink besides water.

What Else You Should Know About Caring for Baby Teeth

You might hear that baby teeth do not matter because they fall out anyway, but this is not the case. Baby teeth usually stay in the mouth until around age six, and back teeth may remain until age 12 or older. Decay in these teeth can lead to pain, infection, and trouble eating, and it can also affect the space needed for permanent teeth coming in underneath.

Pay attention to what your child drinks throughout the day, especially at bedtime. A few habits make a big difference in your child’s cavity risk:

• Water is the best choice after brushing at night. If your child needs a bottle to fall asleep, fill it with water only.
• Skip milk, formula, or juice in bedtime bottles. These create the perfect setup for decay while your child sleeps.
• Cut down on sugary drinks and snacks between meals. Frequent sipping or snacking gives bacteria more chances to produce acid.
• If your baby has not gotten a tooth yet, you can still clean their gums with a soft, damp cloth to build the habit early.

Your child should see a dentist by their first birthday or within six months of their first tooth appearing, whichever comes first. Many parents are surprised by how early this is, but these appointments focus on prevention and parent education rather than treatment. We check your child’s tooth development, talk through brushing methods, and answer questions about habits like bottle use or pacifiers.

How to Make Brushing Easier for Children

Some parents struggle to brush their toddler’s teeth because their child clamps their jaw shut or turns away. We have found several ways to turn this daily challenge into a smoother routine.

Simple Strategies That Work

Try different times of day when your child is in a better mood. Let them watch you brush your own teeth first, or make it a game by counting teeth together. You can also try different toothbrush designs, since some children respond better to certain colors or character themes than others.

Building the Habit

Consistency matters more than perfection. Even a quick brush on a hard day is better than skipping it entirely. Your child will gradually get more comfortable with the process, and by age two or three, many toddlers brush without much fuss.

Remember, the goal at this age is not a perfect brushing technique. You are building the routine, protecting that single tooth from decay, and helping your child see that dental care is simply part of daily life.

What if My Child Only Has One Tooth for a While?

Some babies get their first tooth right around six months, while others do not see one until closer to their first birthday, and both can be entirely normal. A single tooth still needs the same twice-daily brushing routine described above, and it is worth keeping that habit going even if it takes several months for the next tooth to arrive. If your child is well past their first birthday with no teeth at all, mention it at their next visit so we can take a look.

Start Dental Visits Early at Silicon Beach Pediatric Dentistry

We built our practice around making dental care easy for young children and their parents. Dr. Ray is board-certified in pediatric dentistry, and Dr. Hayley completed her pediatric residency at the well-known USC program. Together, they know that first dental visits can feel like a big step, especially when your child is this young. Our team takes the time to answer your questions, show you proper brushing methods, and check your child’s dental growth in a calm, friendly setting.

We see toddlers with one tooth and toddlers with twenty teeth, and we keep families on a regular checkup schedule from that first visit forward. Our office accepts most PPO insurance plans, and we focus on preventive care to keep little smiles healthy from the start. We are located in Culver City, making quality pediatric dental care easy to reach for families throughout the area. Ready to book your child’s first dental visit or get personal advice about caring for those first teeth? Reach out to us today.

Frequently Asked Questions About Brushing Your Toddler’s First Tooth