When Do Kids Start Losing Teeth? The Wiggly-Tooth Schedule

It usually announces itself at dinner. A first grader bites into an ear of corn, freezes mid-chew, and probes something with her tongue. Then comes the announcement — half thrilled, half alarmed — that a tooth just moved. For the next week, that tooth will be wiggled at breakfast, at recess, in the bathroom mirror, and possibly during your work calls.

Parents tend to have two reactions at once: nostalgia (wasn’t she teething five minutes ago?) and a quiet flicker of worry. Is this the right age? Is it the right tooth? Why did her cousin lose one a full year earlier?

The good news is that baby teeth follow one of the more predictable schedules in childhood — more predictable than first steps or first words. Here’s what that schedule actually looks like, what genuinely counts as early or late, and the handful of situations where a dentist should take a look.

When do kids start losing teeth? The short answer

Age 6 is the classic starting line. According to Mayo Clinic, a child’s baby teeth typically begin to loosen and fall out around then, though the process can start a year earlier or a year later without meaning anything at all. Some perfectly healthy kindergartners lose a tooth at 5; some perfectly healthy second graders are still waiting at 7.

What follows is a long, unhurried project. Children have 20 baby teeth — officially called primary or deciduous teeth — and shedding them takes about six years, usually wrapping up around age 12. Those 20 teeth make room for a permanent set of 32, counting the wisdom teeth that arrive much later, typically between 17 and 21.

Two useful patterns are worth memorizing. First, teeth generally fall out in the order they came in: the lower central incisors — the two bottom front teeth — almost always go first, just as they were almost always the first to erupt in infancy. Second, girls tend to run a few months ahead of boys, in tooth loss as in so much of early development.

One more reassurance for the record: the age a child loses that first tooth says nothing about intelligence, growth, or how their adult smile will turn out. It’s a clock, largely set by genetics, and it ticks at its own pace.

Can a 5-year-old lose a tooth?

Yes — and it’s common. Five sits comfortably inside the normal window, especially for children who got their baby teeth early. Dentists have long observed a loose rule of thumb: early teethers tend to be early losers. A baby who cut that first tooth at 4 or 5 months often starts the wiggly-tooth era ahead of classmates, while a late teether may hold onto a full baby smile well past kindergarten graduation.

The age that actually earns attention is younger than most parents guess. A tooth that falls out — or becomes noticeably loose — before age 4 deserves a dental visit, because at that age the permanent tooth underneath usually hasn’t begun dissolving the baby tooth’s root yet. Very early looseness is more often the work of something else:

• An injury — a fall against a coffee table, a collision on the playground — that damaged the tooth or its root, sometimes weeks earlier
• Tooth decay that has weakened the tooth or infected the tissue around it
• Rarely, an underlying medical condition affecting the gums or bone, which is exactly why a professional should rule it out

So the honest framing is this: a loose tooth at 5 is a milestone; a loose tooth at 3 is a question. And when a baby tooth exits years ahead of schedule, dentists sometimes place a small device called a space maintainer to hold the gap open, so neighboring teeth don’t drift in and crowd the permanent tooth waiting below.

Why hasn’t my 7-year-old lost any teeth?

This question fills pediatric dentists’ inboxes every fall, usually after a classroom of first graders starts comparing gaps. A 7-year-old with a full set of firmly rooted baby teeth is, in the great majority of cases, simply a child on the later end of a normal curve — often with a parent who was a late loser too. Family history is the single best predictor here.

That said, there is a sensible checkpoint. If no teeth have loosened by around age 8, most dentists will want to take a look, and the visit is refreshingly low-drama: a single panoramic X-ray shows every permanent tooth sitting in the jaw, along with how far along each one is. Nine times out of ten, the image shows a full lineup of adult teeth that are just taking their time — and the appointment ends with a shrug and a sticker.

Occasionally the X-ray finds a real explanation. A small percentage of children are congenitally missing one or more permanent teeth (a condition called hypodontia); without a successor pushing from below, the baby tooth above it has no reason to loosen and can stay put for years, sometimes decades. Crowding, extra teeth, or a permanent tooth angled off course can also slow things down. Less commonly, significantly delayed eruption across the whole mouth prompts a look at nutrition or hormone function.

None of these findings is improved by waiting anxiously at home. The X-ray answers the question definitively, which is worth a great deal more than another year of wondering.

What order do baby teeth fall out? The wiggly-tooth schedule

Baby teeth exit the stage in a sequence so consistent that dentists can usually guess a child’s age from which gaps are showing. Front teeth go first, in a flurry between 6 and 8. Then comes a curious intermission — often a year or two with no losses at all — before the back teeth and canines begin their run around 9. Here’s the typical timetable, per Cleveland Clinic and Mayo Clinic:

Tooth	Where it sits	Typical age lost
Central incisors (lower)	Bottom front pair	6–7 years
Central incisors (upper)	Top front pair	6–7 years
Lateral incisors	Beside the front teeth, top and bottom	7–8 years
First molars	Back chewing teeth	9–11 years
Canines (cuspids)	The pointed “corner” teeth	9–12 years
Second molars	Rear-most baby teeth	10–12 years

Treat these as averages, not deadlines — a healthy child can run a year or so ahead of or behind every line on this chart. The order matters more than the exact ages: teeth also tend to fall out in left-right pairs within a few months of each other. If one lower incisor left in September and its twin is still rock-solid the following spring, that asymmetry is worth mentioning at the next checkup — usually nothing, occasionally a clue.

Why do baby teeth fall out in the first place?

Here’s the part almost no one explains to kids, which is a shame, because it’s genuinely great biology. Baby teeth don’t fall out because they wear out. They’re evicted.

Deep in the jaw, each permanent tooth develops directly beneath (or above) the baby tooth it will replace. As the permanent crown grows and begins its slow migration toward the gumline, the body dispatches specialized cells — odontoclasts — that dissolve the baby tooth’s root, bit by bit, over a period of months. It’s the same demolition machinery the body uses to remodel bone, aimed with remarkable precision.

Eventually the baby tooth is a crown with almost nothing anchoring it. That’s the wiggly stage. A few weeks of tongue-prodding later, the last fibers give way and the tooth pops free — and if you’ve ever looked closely at a freshly lost tooth, you may have noticed it seems oddly small and hollow underneath. That’s because the root, which once made up most of the tooth’s length, has been almost entirely reabsorbed. Nothing is missing; the body simply recycled it.

This mechanism also explains two facts from earlier sections. A baby tooth with no permanent successor never gets the eviction notice, which is why congenitally missing adult teeth leave baby teeth in place for years. And a tooth knocked loose by injury still has its full root — which is why traumatic looseness behaves differently, hurts more, and needs a dentist rather than patience.

Is it better for kids to lose teeth early or late?

Neither — and it’s worth being direct about this, because playground folklore runs in both directions. Some parents hear that early loss means faster development; others hear that late loss means straighter teeth because the jaw has more time to grow. The honest reading of the evidence is that within the normal window, timing is mostly genetic noise. Mayo Clinic and Cleveland Clinic both describe the 5-to-7 starting range as unremarkable in either direction, and shedding age hasn’t been shown to reliably predict orthodontic outcomes on its own.

Where timing does matter is at the extremes, and for specific mechanical reasons rather than mystical ones:

• Teeth lost too early — to decay or injury, before the permanent tooth is ready — leave a gap that neighboring teeth drift into. When the adult tooth finally arrives, its parking spot has shrunk, raising the odds of crowding and, later, orthodontic work. This is why dentists take premature loss seriously and sometimes hold the space open.
• Teeth retained very late — a baby tooth still standing years past its typical exit — can force the permanent tooth to erupt off course, or may signal that no successor exists at all.

In other words, the schedule itself isn’t a report card. What deserves your energy isn’t nudging the timeline but protecting the teeth on it: a baby tooth lost to a cavity at 4 causes real downstream problems that a naturally early exit at 5 does not.

What sets the timing? Genes, sex, and a few surprises

Ask why one child sheds teeth at 5 and another at 7, and the answer is mostly written in DNA. Eruption and shedding timing run strongly in families — if you or your partner lost teeth late, expect your children to keep the pattern. When a dentist reassures you that a slow schedule is “probably just genetics,” that’s not a brush-off; it’s the statistically likeliest explanation.

A few other factors nudge the clock in measurable, if modest, ways:

• Sex. Girls typically begin losing teeth several months earlier than boys, mirroring their generally earlier physical development.
• Teething history. Children whose baby teeth erupted early tend to shed them early; late teethers shed late. The whole dental timeline shifts together.
• Physical growth. Some research links taller, heavier children with slightly earlier tooth loss, though the effect is small and no reason to read anything into your child’s growth chart.
• Birth history. Children born prematurely or at low birth weight sometimes run behind on tooth eruption in the early years, a gap that usually narrows over time.

What doesn’t move the needle, despite persistent rumor: calcium supplements, how much a child chews, or how enthusiastically a tooth gets wiggled. The demolition crew under the gums works on its own contract, and no amount of tongue-prodding negotiates an earlier exit — the wiggling only finishes a job that’s already nearly done.

What are ‘shark teeth’ — and should you worry?

Few dental discoveries alarm parents faster than this one: a permanent tooth emerging behind a baby tooth that hasn’t budged, producing a brief double row that earns the nickname “shark teeth.” (Actual sharks run this system on purpose, with rows of replacements queued up for life. Children, thankfully, are only borrowing the look.)

It happens most often with the lower front incisors around age 6, and again sometimes with the upper molars around 11. The cause is simple geometry: the permanent tooth missed its cue to erupt directly beneath the baby tooth’s root, so the root never fully dissolved, and the newcomer slipped out along an adjacent path instead.

Here is the reassuring part. In most cases, this resolves itself. Once the baby tooth finally falls out, the tongue — which presses against the lower front teeth thousands of times a day during swallowing and speech — gradually nudges the permanent tooth forward into its proper position over weeks to months. Encouraging your child to wiggle the lingering baby tooth is genuinely useful here.

When to get help: if the baby tooth shows no looseness at all after the permanent tooth has fully emerged — give it roughly two months — a dentist may recommend removing the holdout so the adult tooth can migrate into place. It’s a quick, routine procedure. What shark teeth almost never require is panic, and they don’t by themselves predict braces down the road.

Should you pull a loose tooth or let it fall out?

Generations of doorknobs and lengths of string have been enlisted for this job, and the modern dental consensus is blunt: don’t. A baby tooth that’s ready will leave with almost no force; a tooth that needs yanking, by definition, isn’t ready.

The reason is the root. A naturally shedding tooth has had its root dissolved down to nearly nothing, so it detaches cleanly with a little blood and no drama. Pull a tooth that still has significant root left and you risk breaking that root off in the gum, tearing tissue, causing real pain, and opening a path for infection — trading a week of wobbling for a dental visit nobody wanted.

The better playbook:

• Let your child do the wiggling, with a clean finger or (more likely) a relentless tongue. Kids are excellent judges of their own pain threshold and will stop exactly where it hurts.
• Offer firm-but-fair foods — apple slices, corn on the cob, crusty bread — which have ushered out more loose teeth than any deliberate technique.
• When a tooth is hanging by a genuine thread, twisting sideways painlessly, a gentle twist with a clean tissue is fine. That’s removal by invitation, not force.

One exception cuts the other way: if a loose tooth is causing significant pain, keeping a child from eating, or dangling at an angle that risks being swallowed during sleep, call the dentist rather than improvising. And if a tooth is loose because of a blow rather than biology, skip the wiggling entirely — that’s an injury, not a milestone.

Does losing a tooth hurt?

Usually not much — which surprises children more than anyone. Because the root has already dissolved, the final detachment involves a few fibers of soft tissue, a moment of odd pressure, and then the strange thrill of a gap. Many kids report that the anticipation was far worse than the event; more than a few teeth exit unnoticed into a sandwich.

What’s normal in the minutes afterward: a small amount of bleeding, sometimes enough to look dramatic once mixed with saliva. Have your child bite gently on a piece of clean, folded gauze or a damp cloth for a few minutes; that pressure nearly always settles it. A rinse with lukewarm water afterward helps, and the socket may look dark or ragged for a day or two before the gum smooths over. Mild tenderness at the site can make crunchy foods unappealing for a day, so soft options earn their keep.

What’s not typical, and worth a call to the dentist: bleeding that hasn’t slowed after about ten minutes of steady pressure, significant pain that persists past the first day, swelling of the gum or face, or fever. Those signs point away from routine shedding and toward irritation or infection that deserves a professional look.

For the anxious child, honesty works better than dismissal. Explaining the mechanism — the tooth’s root has already been recycled, so there’s almost nothing left to hurt — turns a scary unknown into a rather cool piece of biology they can retell at school.

What is the #1 cause of tooth loss?

People often search this question expecting a trick answer, so here it is straight: for the natural, scheduled loss of baby teeth, the “cause” is simply the permanent tooth pushing from below. But for premature tooth loss — teeth that leave before their time — the leading culprit at every age is disease, and it changes character across a lifetime.

In childhood, the top cause of early tooth loss is tooth decay. The World Health Organization estimates that around 2 billion people worldwide live with cavities in their permanent teeth, and roughly 514 million children have cavities in their baby teeth — making dental caries one of the most common health conditions on Earth. A badly decayed baby tooth may need extraction years ahead of schedule, with the crowding consequences described earlier. In adulthood, the baton passes to gum (periodontal) disease, which quietly erodes the bone anchoring teeth and stands as the leading cause of tooth loss in adults.

The reason this matters in an article about 6-year-olds: the habits that prevent both are built now, during the wiggly-tooth years. The evidence-backed short list is unglamorous and effective — brushing twice a day with a fluoride toothpaste, limiting sugary drinks and grazing between meals, regular dental checkups, and dental sealants on the permanent molars, which the CDC reports prevent the large majority of cavities in back teeth for years after application.

Baby teeth are temporary. The bacteria, habits, and gum health surrounding them are not — they transfer directly to the permanent set moving in.

Don’t forget the six-year molars

While everyone is celebrating what’s falling out, the most important dental event of this age often slips by unnoticed: what’s coming in. Around age 6 — sometimes before a single tooth has been lost — the first permanent molars erupt at the very back of the mouth, behind all the baby teeth. No baby tooth falls out to announce them. No gap appears. Many parents assume they’re just more baby teeth.

They aren’t, and they matter enormously. These “six-year molars” are permanent, they anchor the bite for life, and they arrive with deep grooves that trap food in a spot a 6-year-old’s brushing rarely reaches well. That combination makes them among the most cavity-prone teeth a person will ever own — and any decay in them is decay in a tooth meant to last eighty-plus years.

A practical checklist for this stage:

• Look for them. Around your child’s sixth birthday, peek at the back of the mouth; a pale ridge of new tooth behind the last baby molar is the giveaway. Erupting molars can cause a few days of gum soreness, occasionally with a small flap of tissue over the emerging tooth.
• Extend the brushing. Kids under about 7 or 8 generally can’t brush the back molars adequately alone; a parental follow-up pass is worth the negotiation.
• Ask about sealants. Dentists commonly recommend sealing these molars soon after they fully erupt — a painless, drill-free coating with a strong evidence record.

Around age 12, a second set of permanent molars repeats the whole performance. Same teeth, same grooves, same checklist.

The tooth fairy years: handling the feelings (and the logistics)

Losing a tooth is a strange thing to ask of a child, if you think about it: a piece of your body detaches, there’s blood, and the adults are delighted. Most kids land somewhere between pride and squeamishness, and both reactions are developmentally ordinary.

For the enthusiastic ones, the milestone runs itself. For the worriers — and roughly every classroom has a few — a little preparation goes a long way. Explaining ahead of time that the tooth’s root has already dissolved, that bleeding will be brief, and that a new tooth is literally the thing doing the pushing turns the event from body horror into biology. Children’s books about losing teeth do this work charmingly, and a school nurse’s tooth-shaped treasure box has soothed generations of first-grade nerves.

A few logistics veterans learn the hard way: teeth get swallowed at dinner more often than anyone admits (harmless — it passes without incident, and the tooth fairy famously accepts a note in lieu of goods). Teeth also get lost on playgrounds, in swimming pools, and once, memorably, inside a birthday cake. Keeping expectations flexible spares tears.

As for the tooth fairy’s going rate, that’s set by household economics rather than medical evidence, and inflation appears to have reached her too. One genuinely useful tradition, whatever the payout: some families keep a simple log of which tooth left and when. It’s a sweet keepsake — and, more practically, a surprisingly handy record when the dentist asks whether the losses have been symmetrical.

When to see a dentist or doctor about losing teeth

Most of the wiggly-tooth era needs no professional input beyond routine checkups, which should already be happening twice a year. But a handful of situations genuinely warrant a call, and knowing them in advance beats searching at midnight:

• A loose or lost tooth before age 4. Natural shedding rarely starts this early; injury, decay, or (rarely) an underlying condition should be ruled out.
• No loose teeth by age 8. Almost always a slow clock, but a single X-ray confirms the permanent teeth are present and on their way.
• A tooth loosened by injury. Any tooth wobbling after a fall or blow needs prompt dental evaluation, even if it seems to firm up — root damage can surface weeks later.
• A knocked-out permanent tooth. This is a true dental emergency. Handle the tooth by the crown, not the root; keep it moist (in milk, or tucked in the cheek of an older, calm child); and get to a dentist immediately — reimplantation success drops sharply within the first hour. A knocked-out baby tooth, by contrast, is not reimplanted, but still deserves a same-day call.
• Pain, swelling, or fever around a loose tooth or an empty socket — possible signs of infection rather than routine shedding.
• Bleeding that won’t stop after about ten minutes of firm gauze pressure.
• Shark teeth with a baby tooth that never loosens, roughly two months after the permanent tooth has emerged.
• A loose tooth in an adult — never normal, and most often a sign of gum disease that’s very treatable when caught early.

When in doubt, call. Pediatric dental offices field these questions all day, and a two-minute conversation routinely saves a week of worry.

Frequently asked questions

Can a 5-year-old lose a tooth?

Yes — age 5 is within the normal window, especially for children who got their baby teeth early as infants. Most kids lose their first tooth around 6, but the healthy range runs from about 5 to 7. The age that warrants a dental checkup is before 4, since looseness that early is more often caused by injury or decay than by natural shedding.

Is it better for kids to lose teeth early or late?

Neither, as long as the timing falls within the normal range of roughly 5 to 7 for the first tooth. Shedding age is largely genetic and doesn’t predict development or dental health. What does matter is teeth lost prematurely to decay or injury — those gaps let neighboring teeth drift, crowding the permanent tooth’s space, which is why dentists sometimes place a space maintainer after very early loss.

What is the #1 cause of tooth loss?

For premature tooth loss in children, it’s tooth decay; in adults, gum (periodontal) disease takes over as the leading cause. The World Health Organization estimates about 514 million children worldwide have cavities in their baby teeth, making caries one of the most common health conditions anywhere. Natural, on-schedule loss of baby teeth is different — that’s simply the permanent tooth dissolving the baby tooth’s root from below.

Why hasn’t my 7-year-old lost any teeth?

Most likely because your child’s biological clock runs late — a pattern that strongly follows family history, so a parent who lost teeth late often has kids who do too. If no teeth are loose by age 8, dentists recommend an X-ray to confirm the permanent teeth are present and developing. Occasionally the image reveals a congenitally missing adult tooth or crowding, but the usual finding is a full set simply taking its time.

Should I pull my child’s loose tooth?

No — let it come out on its own, or nearly so. A tooth that’s truly ready detaches with almost no force because its root has already dissolved; one that needs yanking still has root attached, and pulling it risks a broken root fragment, torn gum tissue, pain, and infection. Encourage your child to wiggle it themselves, and if it’s hanging by a thread and twists painlessly, a gentle tug with a clean tissue is fine.

How many teeth do kids lose?

All 20 baby teeth — 10 on top and 10 on the bottom — are eventually shed and replaced. The process typically starts around age 6 with the lower front teeth and finishes around age 12 with the second molars. The permanent set ultimately totals 32 teeth, including four wisdom teeth that usually arrive between ages 17 and 21, long after the tooth fairy has retired from the household.

What are shark teeth in kids?

Shark teeth describe a permanent tooth erupting behind a baby tooth that hasn’t fallen out yet, creating a temporary double row — most often the lower front incisors around age 6. It looks alarming but usually resolves on its own: once the baby tooth exits, the tongue gradually pushes the permanent tooth into position. If the baby tooth isn’t loose about two months after the adult tooth emerges, a dentist can remove it.

Does losing a baby tooth hurt or bleed a lot?

Usually neither. Because the root has already dissolved, the final detachment involves only a few soft-tissue fibers — many kids feel odd pressure rather than pain. A small amount of bleeding is normal and typically stops within a few minutes of biting on clean gauze. Call the dentist if bleeding continues past about ten minutes of steady pressure, or if pain, swelling, or fever develops afterward, since those suggest something beyond routine shedding.

My 4-year-old has a loose tooth — is that a problem?

It’s worth a dental visit rather than a wait-and-see approach. Natural shedding rarely begins before age 4 because the permanent tooth usually hasn’t started dissolving the baby tooth’s root yet. Looseness this early is more often caused by an earlier injury — sometimes one from weeks before — or by tooth decay. A dentist can quickly identify the cause and, if the tooth is lost early, protect the space for the permanent tooth underneath.

When do kids stop losing teeth?

Around age 12, when the last baby teeth — usually the second molars and canines — fall out. The whole shedding process spans about six years, from roughly age 6 to 12, and often includes a quiet stretch around ages 8 to 9 with few or no losses. After that, the only new arrivals are the second permanent molars around 12 and the wisdom teeth, which typically erupt between 17 and 21.

References

• MedlinePlus — Child Dental Health
• NHS — Taking care of children’s teeth
• World Health Organization — Oral health fact sheet

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.