How Early Can a Baby Start Teething: Key Facts

Most babies get their first tooth between 6 and 12 months of age, but teething can start much earlier. Some infants begin cutting teeth as young as 3 or 4 months, and in rare cases, babies are actually born with teeth already visible. Understanding what’s normal, what’s unusually early, and what to do about it can save you a lot of unnecessary worry.

The Typical Teething Window

The first tooth usually breaks through the gums around 6 months. The two bottom front teeth (lower central incisors) almost always come in first, followed by the two upper front teeth. From there, teeth continue to appear in pairs, working outward: lateral incisors, first molars, canines, and finally second molars. Most children have all 20 baby teeth by age 3.

That said, “typical” covers a wide range. A baby who starts teething at 4 months is on the early end but still perfectly normal. A baby whose first tooth doesn’t appear until 12 or even 14 months is also normal. The timing varies due to genetics, geography, nutritional status, and overall health. If your parents or your partner’s parents were early teethers, your baby is more likely to be one too.

When Babies Are Born With Teeth

The earliest possible teething is at birth. Natal teeth are teeth already present when a baby is born, and a 2023 analysis found they occur in about 1 in every 289 newborns worldwide. Neonatal teeth, which appear within the first month of life, are about three times less common than natal teeth.

These teeth look different from the ones that arrive at 6 months. They often have very little root structure, which means they can be loose or wobbly. A dentist will need to evaluate whether the tooth is stable enough to stay or whether it should be smoothed down or removed. The main concerns are that a loose tooth could pose a choking risk, and that the tooth’s sharp edges can irritate the underside of the baby’s tongue, sometimes causing small ulcers that make feeding painful.

For breastfeeding parents, natal teeth can sometimes wound the nipple during nursing, though this doesn’t happen in every case. If feeding becomes difficult for either parent or baby, a dentist can help decide on the best approach, whether that’s smoothing the tooth’s edges or removing it entirely.

Why Some Babies Teethe Earlier

Baby teeth actually start forming in the womb around the sixth week of pregnancy, long before they’re visible. How quickly they push through the gums after birth depends on several factors. Genetics plays the biggest role. If early teething runs in your family, expect the same pattern in your child.

Research from Frontiers in Oral Health has also shown that maternal stress during pregnancy can accelerate tooth eruption. Higher levels of the stress hormone cortisol during the late second and third trimesters were associated with earlier appearance of baby teeth. This doesn’t mean stress causes problems with the teeth themselves; it simply shifts the timeline forward.

Drooling at 2 to 3 Months Is Usually Not Teething

One of the most common reasons parents think their baby is teething early is drooling. Babies naturally start producing more saliva around 3 months of age as part of normal oral development, not because a tooth is on its way. Drooling and blowing bubbles peak between 3 and 6 months as babies explore the world with their mouths. This happens whether or not teeth are coming.

Chewing on fists and fingers at this age is also a developmental milestone, not a reliable sign of teething. The real signs that a tooth is about to emerge include visibly swollen or red gums in one spot, increased fussiness that coincides with those gum changes, and eventually the white edge of a tooth just below the gum surface. If you run a clean finger along your baby’s gum and feel a hard, sharp ridge, that’s a tooth.

Soothing Early Teething Pain Safely

If your baby does start teething at 3 or 4 months, the options for relief are simple but effective. The American Academy of Pediatrics recommends rubbing your baby’s gums with a clean finger or giving them a firm rubber teething ring to chew on. Choose solid rubber, not liquid-filled rings, and don’t freeze the ring. A frozen teether is hard enough to bruise sensitive gums.

What you should avoid matters just as much. The FDA warns against using any topical numbing gels or creams containing benzocaine or lidocaine on babies’ gums. Benzocaine can cause a rare but serious condition that reduces the blood’s ability to carry oxygen. Lidocaine solutions can cause seizures, heart problems, and even death in young children when too much is swallowed. Homeopathic teething tablets have also been flagged for safety concerns. Amber teething necklaces pose choking and strangulation risks and have no proven benefit.

For babies younger than 6 months, pain medication options are limited. If your baby seems truly uncomfortable and home remedies aren’t helping, a call to your pediatrician can clarify what’s appropriate for your child’s age and weight.

When to Schedule That First Dental Visit

The current recommendation is to see a dentist by your child’s first birthday or within six months of the first tooth appearing, whichever comes first. If your baby gets a tooth at 3 months, that means scheduling a visit by 9 months rather than waiting until age 1. For babies born with natal teeth, a dental evaluation should happen much sooner, ideally within the first days or weeks, to check whether the tooth is stable and not causing feeding problems.