At What Age Do Teeth Come In? | Month-By-Month Eruption Map

Most babies cut their first tooth around 6 months, and many have all 20 baby teeth in by about 2½ to 3 years.

Waiting for that first tiny tooth can feel like forever. Then it shows up and suddenly you’re dealing with drool, chewing, cranky naps, and a brand-new question: when do the rest show up, and what’s normal?

This article lays out a clear timeline, what “normal” really means (it’s wider than most people think), and what to do at each stage so you’re not guessing. You’ll also see a few red flags that deserve a call to a clinician, since teething gets blamed for stuff that’s actually illness.

At what age do teeth come in for babies and toddlers

Most babies start teething in the middle of the first year. A lot of kids get their first tooth between about 4 and 7 months, and many start closer to 6 to 8 months. The full set of baby teeth (20 total) is often in place by about 30 months (2½ years). Some kids are earlier, some are later, and both can still be normal.

Timing varies because kids vary. Genetics play a big part, and day-to-day changes like sleep, appetite, and gum soreness can make it feel like “nothing is happening” right up until a tooth pops through. A week later, you may spot a second tooth right beside it.

What stays more consistent than exact timing is the general order: front teeth tend to show first, molars come later, and the last baby teeth are usually the second molars near the back.

What counts as “normal” timing

Normal isn’t a single month. It’s a range. One baby might cut a first tooth at 4 months. Another might not show a tooth until closer to 10 months. Both can still be fine if your child is growing well and the gums look healthy.

Also, teeth don’t arrive on a tidy schedule. They can appear in bursts, then pause for a while. So if nothing has changed for weeks, that alone isn’t a problem.

How to read any teething timeline

Use timelines as a rough map, not a deadline. If your child’s teeth arrive a bit earlier or later than the chart, that’s common. More useful questions are:

• Is my child steadily getting new teeth over time?
• Is the pattern roughly front-to-back?
• Are there signs of gum swelling and a tooth edge close to the surface?

What usually comes first and why it feels random

The first teeth are often the two bottom front teeth (lower central incisors). Soon after, many babies get the two top front teeth (upper central incisors). From there, teeth often fill in outward with lateral incisors, then molars, then canines, then the final set of molars.

It can feel random because the gums can be sore well before a tooth breaks through. You may see a pale bump under the gum for days, then nothing, then suddenly a sharp edge appears. That “stop-start” pattern is common.

Teething signs that fit the usual pattern

Some signs are common when a tooth is close:

• More drool than usual
• Chewing on hands, toys, or cloth
• Rubbing the gums or face
• Fussiness that comes and goes
• Lightly swollen or tender gums

Teething can be uncomfortable, but it should not cause a high fever. If your child has a true fever, vomiting, dehydration, or seems unusually sleepy, treat it as illness and get medical advice.

Teething can shift sleep and feeding

Some babies feed in shorter bursts, wake more often, or want extra soothing while a tooth is close. Others barely react. If feeding drops a lot or wet diapers decrease, treat that as a health concern rather than “just teething.”

What to do at each stage of teething

You don’t need fancy gear. A few practical habits carry most families through.

Before the first tooth shows

You can wipe the gums with a clean, damp cloth after feedings or before bed. It’s simple, and it gets your baby used to mouth care early.

When the first tooth breaks through

Start brushing as soon as you can feel that tooth edge. Use a soft infant toothbrush and a tiny amount of fluoride toothpaste. The amount matters because toddlers swallow toothpaste more than older kids. The CDC describes a smear about the size of a grain of rice for kids under 3. CDC guidance on fluoride toothpaste amounts for young children lays out the smear/pea sizing in plain terms.

When molars show up

Molars have a broader chewing surface and can irritate a larger patch of gum. That can mean more wake-ups and more chewing. Keep a clean, chilled teether in the fridge (not the freezer), or offer a cold washcloth to gnaw on. Cold can dull the soreness for a short time.

Soothing options that are safer than they look

Some popular “remedies” create risks. Avoid teething jewelry worn around the neck, since strangulation and choking are real hazards. Also skip numbing gels unless a clinician has told you to use them. If pain seems strong, talk with your child’s pediatric clinician about the right medicine and dose for your child’s age and weight.

If you want a plain, reputable overview of typical timing and early tooth care, the American Academy of Pediatrics has a solid parent page at HealthyChildren.org’s “Teething & Tooth Care”.

Typical baby tooth timing and ranges

The charts below use broad ranges since tooth eruption timing varies a lot by child. If your child is outside a range but is otherwise healthy, that can still be normal. If you’re seeing big delays, pain that seems unusual, or gum changes that worry you, a dental clinician can check what’s going on beneath the gumline.

For a well-known public reference point, the ADA’s public education site posts eruption charts and general timing notes, including that baby teeth often begin erupting around 6 months. ADA MouthHealthy eruption charts provide a simple overview.

Below is a practical “range map” you can use at home. Think of it as a track, not a test.

Tooth group (baby teeth)	Common eruption window	Common shedding window
Lower central incisors (bottom front 2)	6–10 months	6–7 years
Upper central incisors (top front 2)	8–12 months	6–7 years
Upper lateral incisors (top front sides)	9–13 months	7–8 years
Lower lateral incisors (bottom front sides)	10–16 months	7–8 years
First molars (back chewing teeth, first set)	13–19 months	9–11 years
Canines (pointed “eye teeth”)	16–23 months	9–12 years
Second molars (back chewing teeth, last set)	23–33 months	10–12 years

Why some babies get teeth early and others late

A big driver is family pattern. If you or your partner got teeth early, your baby might as well. Birth timing and growth pace can also shift the calendar a bit. A child who hits other milestones early may still teethe late, and a child who is slow to crawl may still cut teeth early. Teeth have their own schedule.

What matters most is the overall trend. If teeth are slowly arriving and your child is thriving, slight timing differences usually aren’t a problem.

Twins, siblings, and “same house, different teeth”

Even kids raised the same way can teethe on totally different calendars. One sibling might pop two teeth in a month. Another may take months between teeth. That’s still within the normal range.

When timing can point to a medical issue

It’s not common, but very delayed eruption can show up with certain health conditions or nutrition problems. If your child has no teeth by around 12 to 15 months, or if there are other growth concerns, it’s worth getting a check. A clinician can confirm whether teeth are present under the gums and whether anything needs attention.

Teething symptoms that can fool you

Teething often gets blamed for things that are actually illness. Since teething peaks in the same age window when babies start catching more viruses, it’s easy to connect the dots in the wrong way.

Fever, diarrhea, and rashes

Mild gum soreness and drool are common with teething. A true fever (38°C / 100.4°F or higher), persistent diarrhea, or a child who seems unwell deserve medical advice. Don’t chalk that up to a tooth.

If you want a medically reviewed baseline description of timing and symptoms, MedlinePlus has a straightforward overview: MedlinePlus “Teething” medical encyclopedia entry.

Ear pulling and face rubbing

Some babies rub their cheeks or tug their ears during teething because gum nerves can “refer” discomfort. Ear tugging can also happen with an ear infection. If your child is irritable, not sleeping, and seems sick, get them checked.

Feeding and oral care while teeth are coming in

As teeth appear, mouth care shifts from gum wiping to brushing. It’s a small change with a big payoff since cavities can start as soon as teeth are in the mouth.

Brushing basics that fit real life

• Brush twice a day once teeth are present.
• Use a soft, small brush head.
• Use a smear of fluoride toothpaste for kids under 3 (grain-of-rice size).
• Use a pea-sized amount after age 3, once your child can spit reliably.

Brushing a squirmy baby can be a wrestling match. Try brushing after the last feed, with your child sitting in your lap and their head resting against your chest. Sing a short song so it ends the same way each time.

What about night feeds?

If your baby falls asleep after feeding, wipe teeth and gums with a clean, damp cloth when possible. If that’s not realistic every night, aim for a thorough brush before bed on most nights and keep sugary drinks out of bedtime routines.

When to call a clinician

Most teething concerns are routine. A few situations deserve a call sooner rather than later, either to your pediatric clinician or a pediatric dentist. This table is a practical “triage” list.

What you notice	What it can mean	What to do next
No teeth by about 12–15 months	Often normal variation, sometimes delayed eruption	Book a dental or pediatric check to confirm teeth under gums
Fever ≥ 38°C / 100.4°F	More consistent with illness than teething	Follow your clinician’s fever guidance for your child’s age
Dehydration signs (few wet diapers, very dry mouth)	Low intake or illness	Seek medical advice the same day
Gums look very swollen, bleeding, or pus-like	Inflammation or infection	Call a dentist; take photos to show what you see
White or brown spots on new teeth	Early decay or enamel issues	Schedule a dental visit soon; ask about fluoride exposure
Tooth looks stuck, crooked, or not breaking through for weeks	Often normal, sometimes needs an exam	Bring it up at the next dental visit, or sooner if painful
Constant crying with no soothing, plus illness signs	Not typical teething discomfort	Get medical advice promptly

Practical timeline you can keep on your phone

If you want a simple mental calendar, this is the “most common” flow many parents see:

• 4–10 months: First front teeth often appear.
• 9–16 months: More incisors fill in.
• 13–19 months: First molars often arrive.
• 16–23 months: Canines tend to show.
• 23–33 months: Second molars finish the baby set.

Use that as a sanity check, not a rulebook. If your child’s pattern is close, you’re probably on track.

Common parent worries, answered plainly

“My baby has one tooth. Why not the other matching one?”

Pairs often come close together, but they don’t have to arrive at the same time. A gap of weeks is common.

“My baby is biting while nursing or on the bottle”

Biting can spike when incisors first appear. Short pauses, switching sides, and ending a feed calmly when biting happens can reduce it. If it’s intense or you’re getting injured, a lactation professional or pediatric clinician can help with technique changes.

“How soon should we see a dentist?”

Many dental groups recommend a first dental visit in the first year or soon after the first tooth appears. If that feels early, it’s often a short appointment where you get feeding, brushing, and cavity-prevention tips tailored to your child.

Simple habits that protect new teeth

Once teeth are in, cavities become possible. You don’t need perfection. You need consistency.

• Brush twice a day with the right toothpaste amount.
• Avoid letting your child fall asleep with sweet drinks.
• Offer water between meals once your clinician says it’s ok for age.
• Keep an eye out for white spots near the gumline.

Teething is messy, noisy, and sometimes exhausting. It’s also temporary. With a clear timeline and a few steady habits, you can get through it with fewer surprises and healthier little teeth along the way.