Baby's First Tooth: Teething, Soothing & First Brushes

Is that a tiny white speck on your baby's gum, or just a trick of the light? If you've been squinting into a giggling little mouth lately, you're in good company. That first tooth is one of the sweetest milestones of the first year, and it usually arrives with a few weeks of extra drool, chewing, and fussiness that can leave parents wondering what's normal. In our own home, we're right in the thick of this milestone as I write this, so I promise you're not navigating it alone.

At Poppy Kids Pediatric Dentistry here in Novato, we love helping Marin County families welcome those first little teeth with confidence. Here's what to expect, how to soothe your baby safely, when to start brushing, and when it's time for that very first dental visit.

When that first tooth arrives

Most babies get their first tooth around 6 months, though anywhere from about 4 to 10 months is common — and some perfectly healthy babies run a little later. The two bottom front teeth (the lower central incisors) usually lead the way, followed by the upper front teeth, the lateral incisors, first molars, canines, and finally the second molars at the back. By around age 2½ to 3, most children have their full set of 20 baby teeth. If you'd like the full map, the American Academy of Pediatric Dentistry (AAPD) publishes a helpful eruption chart. Every baby follows their own schedule, so try not to compare — teeth, like first steps, come when they're ready.

What teething really looks like (and what it doesn't)

Real teething tends to show up as sore, swollen gums, extra drooling, a strong urge to chew or bite, and some mild crankiness that peaks just before a tooth breaks through. You might even notice a very slight bump in temperature. But here's the important part: true teething does not cause a real fever. According to the American Academy of Pediatrics (AAP), a temperature of 100.4°F (38°C) or higher, along with diarrhea, vomiting, a runny nose, or an unusually lethargic baby, is not caused by teething.

It's an easy myth to fall for, because teeth arrive right around the age that a baby's borrowed immunity from mom fades and little colds become common. If your baby seems genuinely unwell, trust your instincts and call your pediatrician rather than blaming teeth.

Soothing the discomfort, safely

The good news: the simplest remedies are also the safest, and often the most effective:

• Try gentle pressure. Rub your baby's gums with a clean finger, or offer a firm rubber teething ring chilled in the refrigerator — not the freezer, since frozen toys turn hard enough to bruise tender gums.
• Keep a soft cloth handy. A clean, damp washcloth to gnaw on (and to wipe away all that drool) can be wonderfully soothing.
• Ask about pain relief. For significant discomfort, your pediatrician can guide you on age-appropriate acetaminophen, or ibuprofen for babies older than 6 months.

Just as important is knowing what to skip. The U.S. Food and Drug Administration (FDA) urges parents to avoid:

• Benzocaine and lidocaine gels (such as Orajel or Anbesol). These offer little to no benefit and can cause methemoglobinemia, a rare but serious drop in the blood's oxygen; prescription lidocaine has been linked to even graver harm in infants.
• Homeopathic teething tablets. Lab testing has found inconsistent, sometimes dangerous levels of belladonna, a toxic substance.
• Amber teething necklaces. There's no science to support them, and they carry real risks of choking and strangulation — the AAP advises against any jewelry on babies. The American Dental Association echoes each of these cautions.

Caring for that very first tooth

Here's the part that surprises a lot of parents: oral care actually begins before you can see a single tooth. Even in the gums-only stage, gently wipe your baby's gums with a clean, damp washcloth or a piece of gauze after feedings to clear away bacteria and start building the habit early.

Once that first tooth appears, it's ready to be brushed. The AAPD recommends brushing as soon as the first tooth erupts, using a soft-bristled infant toothbrush. And yes, fluoride toothpaste right from the start: the AAPD, ADA, and AAP all recommend a rice-grain-sized smear twice a day for children under 3, increasing to a pea-sized amount between ages 3 and 6. You'll be doing the brushing for your little one for now, so think of it as a cozy twice-a-day ritual rather than a battle. Because Novato's tap water isn't fluoridated, that small smear of fluoride toothpaste is an easy, meaningful way to protect brand-new enamel. Gentle fluoride varnish and other preventive care are part of the services we offer to keep those first teeth strong.

When to see a pediatric dentist

You may have heard the phrase "first tooth, first birthday," and it's the rule we live by. The AAPD, ADA, and AAP all recommend that your child see a pediatric dentist when the first tooth appears, and no later than 12 months of age. That early visit lets us catch tiny concerns before they become big ones, apply protective fluoride varnish, and help you feel confident about brushing at home. From there, we'll usually see your child every six months. You can learn exactly what to expect at your child's first visit — we design these appointments to be gentle, unhurried, and (dare we say) fun.

A few signs are worth a call sooner rather than later: no teeth at all by 18 months, or any fever, diarrhea, or unusual sleepiness that has you worried. Those deserve a proper check, not a "must be teething" shrug.

Teething can test everyone's patience, but it's also your first glimpse of the big, bright smile you're going to know so well. Take it one tooth at a time, keep the soothing simple and safe, and start brushing the moment that first tooth peeks through. If you have questions, or you'd simply like to meet us, I would love to welcome your family to Poppy Kids. For families without dental insurance, our membership plan helps make those early visits easy and affordable.

As always, please consult your pediatrician and me for guidance specific to your child. Every little smile is one of a kind, and it would be our joy to help yours grow.

— Dr. Andrea