Our baby's first tooth just came in. Now what?

How parents usually realize it's happened

The discovery moment is fairly consistent across families: a finger goes looking for the reason a baby will not stop gnawing on everything in reach, and it finds a small, hard edge that was not there the week before. Some parents catch it during a diaper change or bath, running a thumb along the gum out of habit and feeling something new.

Most babies meet a bottom front tooth first, though plenty meet a different one, and which tooth arrives first does not mean anything on its own. Once that first white sliver shows, it keeps inching upward rather than popping into view all at once, so give it a week or two before the whole crown is finally clear of the gum.

Is it really a tooth, or just a swollen gum?

Before a tooth is visible, the gum above it can look puffy, feel firm to a fingertip, or take on a slightly bluish tint that has nothing to do with bruising. That last one, sometimes called an eruption cyst, tends to worry parents the most, and in nearly every case it settles on its own once the tooth underneath finishes its trip to the surface.

A true tooth, once it arrives, feels distinctly hard and smooth under a finger, unlike the softer gum around it. If you press gently and are still not sure what you are feeling, that uncertainty is a completely normal reason to ask at a visit rather than a question you are expected to answer on your own.

It depends on your baby's own calendar

Some babies meet this moment at three or four months. Others reach a first birthday with a smooth, toothless smile and are still well within a typical range. Neither pace predicts anything about the teeth still to come, and comparing against a chart online tends to create more worry than it resolves.

Whichever end of that range your baby lands on, the simplest step is bringing the date up next time you are both in the chair, instead of guessing solo about what it might mean.

What actually changes, starting tonight

Twice-daily brushing begins the moment there is a tooth to brush, using a small, soft brush built for an infant's mouth. The American Dental Association's general guidance calls for a smear of fluoride toothpaste about the size of a rice grain before age three, with an adult doing the brushing rather than a baby managing it alone.

Small circular strokes across the new tooth, plus a soft sweep over the gum tissue beside it, is really the whole method. Expect a messy result for weeks, maybe longer, and let that be fine. Showing up twice a day matters far more than doing it perfectly this early. More on what a first visit covers lives on our infant dental care page.

When it is more than a first tooth

A tooth arriving at a noticeably crooked angle, a bump that does not look like an ordinary eruption cyst, or gum discomfort that keeps going well past what a new tooth would explain are all worth a call rather than a wait. So is any sign your baby seems genuinely unwell rather than simply working on a tooth, a real fever, vomiting, or a rash, which belongs with your pediatrician rather than a teething explanation.

Outside of those signs, there is no rush. More on this whole first year lives on our babies page, and one number reaches both offices, Monday to Friday, 8 to 5, with a real human answering: (239) 482-2722.