When Do Baby Teeth Fall Out

When Do Baby Teeth Fall Out? Typical Ages From Six to Twelve

Most children lose their first baby tooth at around six. The changeover then carries on until about twelve, so it stretches over roughly six years. These ages are averages; some children start a little earlier and others a little later. A birthday alone therefore says little about whether anything is wrong.

Roots that dissolve from below

Underneath each baby tooth, an adult tooth has been developing for years. In fact, when baby teeth fall out depends largely on how quickly those adult teeth grow. As the new tooth moves upwards, it gradually dissolves the root of the baby tooth above it. Eventually only the gum holds the crown in place, so the tooth starts to wobble.

Twenty Milk Teeth and the Jobs They Do

A full set of milk teeth has 20 teeth: ten upper and ten lower. Each jaw has four incisors at the front, two canines and four molars behind them. Most children have the complete set by about the age of three. After that, nothing changes until the first front tooth works loose.

Why baby teeth still matter

Milk teeth do far more than chew. They help children speak clearly, and each one keeps space free for the adult tooth beneath it. Looking after them until they fall out naturally is therefore worth the effort.

Primary (milk) teeth

The first set of 20 teeth, which comes through in infancy and early childhood.

Mixed dentition

The stage, roughly from six to twelve, when baby teeth and adult teeth share the mouth.

Root resorption

The gradual dissolving of a baby tooth’s root by the adult tooth growing underneath; the real reason teeth wobble.

Six-year molar

The first permanent molar, which erupts behind the last milk molar without replacing any baby tooth.

Space maintainer

A small appliance that holds a gap open after early loss of a milk tooth until the adult tooth arrives.

Which Teeth Go First, and at What Age?

The front teeth usually go first: the lower central incisors, then the upper ones. Next come the lateral incisors at around seven to eight. Canines and molars follow between nine and twelve. The American Dental Association chart below gives approximate ages for each tooth. A few months either way is perfectly normal.

“The last baby tooth is usually lost around the age of 12 years.” The same NHS trust lists the lower and upper front teeth as the first to go.

Sheffield Children’s NHS Foundation Trust, Looking after your teeth.

A new back tooth that is not a baby tooth

Around six or seven, a large new molar appears behind the last milk molar. Because nothing falls out to make room, many parents assume it is another baby tooth. In reality it is the first permanent molar, and it has to last a lifetime. Its deep grooves trap food, so it decays easily.

Sealing the grooves early

The NHS says sealants can go on once these back teeth come through. So ask your dentist about fissure sealants when the six-year molar is fully up.

Wobbly Tooth at Home: What Helps and What to Avoid

Patience works best, because a wobbly milk tooth almost always falls out by itself. Your child can wiggle it gently with a clean finger or the tongue. By contrast, tying it to a string or a door handle can tear the gum. Forcing it also prolongs bleeding and can make dental visits scary.

When do baby teeth fall out without any help? Usually once the root has gone. Until then, these steps help:

1. Let the tooth come out naturally; gentle wiggling does no harm.
2. Ask your child to wash their hands before touching the tooth.
3. Keep brushing twice a day, gently, around the loose tooth.
4. Cut hard foods such as apples into small pieces.
5. After it comes out, have your child bite on clean gauze for a few minutes.
6. Call the dentist if bleeding does not stop, or if the gum swells or oozes.

Knocked-out milk teeth stay out

The International Association of Dental Traumatology advises against putting a knocked-out baby tooth back in. Replanting it can damage the adult tooth developing beneath. Instead, keep the tooth, let your child rinse and see a dentist that day.

“Shark Teeth”: An Adult Tooth Behind a Baby Tooth

Lower front adult teeth often appear behind baby teeth that are still in place. Parents often call this “shark teeth” because of the double row. In most cases the baby tooth then loosens and falls out by itself. Over time, the tongue pushes the new tooth forward into line.

Booking a check-up for a stubborn tooth

Is the adult tooth through while the baby tooth has not budged for weeks? Book a check-up. The dentist may take an X-ray to look at the roots first. Then, if needed, they remove the stubborn baby tooth under local anaesthetic.

Losing Teeth Early or Late: When Should You Book a Check-up?

See a dentist if you notice baby teeth falling out well outside the usual age range. Early loss usually follows decay or an injury. A late start, by contrast, tends to be simple individual variation. In either case, an X-ray shows whether the adult teeth are there. The dentist can then decide whether to wait or treat.

When do baby teeth fall out too early?

Decay and accidents are the usual reasons a milk tooth goes early. Neighbouring teeth can then drift into the space and crowd the adult tooth underneath. Dentists therefore often suggest a space maintainer after a back milk tooth goes early.

Protecting New Adult Teeth Through the Changeover

During the mixed-teeth years, two sets of teeth need protecting at once. Both the departing baby teeth and the newly arrived adult teeth can decay. Brushing twice a day with fluoride toothpaste and keeping sugary snacks to mealtimes covers the basics. Regular check-ups then catch small problems early.

Treating decay in teeth that will fall out

Whatever the answer to “when do baby teeth fall out” is, decay still needs treatment. A back milk tooth may stay for years yet. Your dentist sets the recall interval by decay risk and may suggest a fluoride varnish. Daily habits that protect young teeth are listed in our children’s cavity prevention guide.

Why orthodontists like to see seven-year-olds

The American Association of Orthodontists recommends a first orthodontic visit no later than age seven. At that age, a child has a mix of baby and adult teeth. As a result, the orthodontist can spot crowding or bite problems early. A visit does not always mean braces. If treatment helps, children’s orthodontics can take advantage of natural growth.