Most babies get their first tooth around 6 months of age, though anywhere from 4 to 12 months is normal. The full set of 20 primary (baby) teeth usually finishes coming in by age 3. The process isn’t one continuous event but rather a series of episodes, each lasting roughly 3 to 8 days, spread out over about two and a half years.
When the First Tooth Appears
Six months is the classic milestone, but plenty of healthy babies fall outside that window. Some start teething as early as 4 months, while others don’t see a first tooth until closer to their first birthday. Genetics play the biggest role in timing. If you or your partner teethed early, your baby likely will too. If no teeth have appeared by 9 months, it’s worth mentioning to your pediatrician, not because it’s necessarily a problem, but because in rare cases delayed eruption can signal an underlying condition like hypothyroidism or certain genetic syndromes.
The Typical Order of Eruption
Teeth generally follow a predictable pattern, though the sequence can vary from child to child. Here’s the typical timeline:
- Lower central incisors (bottom front two): 6 to 10 months
- Upper central incisors (top front two): 8 to 12 months
- Upper lateral incisors (flanking the top front): 9 to 13 months
- Lower lateral incisors (flanking the bottom front): 10 to 16 months
- First molars (upper and lower): 13 to 19 months
- Canines (the pointed teeth): 16 to 23 months
- Second molars (upper and lower): 23 to 33 months
Bottom teeth tend to arrive before their upper counterparts, though research from the American Academy of Pediatric Dentistry has documented cases where the upper central incisors came in first, which is simply a normal variation. If your baby’s teeth appear in a slightly different order, that alone isn’t a concern.
How Long Each Tooth Takes to Come In
A single tooth doesn’t just pop through overnight. Each eruption episode typically lasts 3 to 8 days, covering the period a few days before the tooth breaks through the gum and a few days after. During that window, you’ll likely notice the most fussiness and discomfort.
Interestingly, teeth don’t always move in a straight line through the gum. Research has shown that many primary teeth appear to “oscillate,” moving back and forth between stages of eruption for several days before fully emerging. This means a tooth might look like it’s about to break through, seem to retreat, and then finally appear. That’s normal and not a sign of a problem.
The teeth that tend to cause the most discomfort are the first molars and canines, likely because their broader surfaces create more pressure as they push through. Many parents find that the first few teeth are the roughest experience simply because everything is new, but molar eruption around 13 to 19 months can bring a second wave of fussiness.
Recognizing Teething Symptoms
Teething symptoms can start as early as 4 months. The most reliable signs include drooling more than usual, chewing on hands or objects, swollen or tender gums, and general irritability. Some babies also have mild sleep disruptions or a slightly reduced appetite, particularly for solid foods that press against sore gums.
Teething does not cause high fevers, diarrhea, or rashes on the body. A very slight temperature increase (below 100.4°F) can accompany eruption, but anything higher points to something else, like a viral infection. The timing is easy to confuse because babies start teething around the same age that maternal antibodies begin to wane, making infections more common. If your baby seems truly sick, it’s not the teeth.
Safe Ways to Ease Teething Pain
The simplest and safest options are also the most effective. A clean, chilled (not frozen) teething ring or washcloth gives your baby something firm to press against their gums, which counteracts the pressure from the emerging tooth. Gently rubbing the gums with a clean finger works the same way. For babies already eating solids, chilled soft foods like cold applesauce or yogurt can provide some relief.
If your baby is clearly uncomfortable, infant acetaminophen or ibuprofen (for babies 6 months and older) can help, dosed by weight. Beyond that, keep it simple.
Products to Avoid
Several popular teething products carry real safety risks. The FDA has issued specific warnings about each of these:
Over-the-counter teething gels containing numbing agents like benzocaine can cause a rare but serious blood condition that reduces the blood’s ability to carry oxygen. Prescription-strength numbing solutions are even more dangerous for infants and have been linked to seizures, heart problems, and death. These products also wash away quickly with saliva, providing almost no meaningful relief.
Homeopathic teething tablets have also drawn FDA warnings after reports of serious adverse events in children. And amber teething necklaces, marketed with claims that amber releases a pain-relieving substance when warmed by skin, pose strangulation and choking hazards. The FDA has received reports of infant deaths linked to teething jewelry.
When to Schedule a First Dental Visit
The American Academy of Pediatric Dentistry, the American Dental Association, and the American Academy of Pediatrics all recommend that children have their first dental visit before their first birthday, or within six months of the first tooth appearing, whichever comes first. This visit is less about finding cavities and more about establishing a baseline, discussing fluoride, and catching any developmental issues early. Once teeth are in, brushing twice daily with a rice-grain-sized smear of fluoride toothpaste helps protect them from the start.