The Baby Tooth Came Out on the Trampoline. We Did Not Put It Back.

Quick answer: A knocked-out baby tooth is never replanted. Putting it back risks damaging the permanent tooth developing directly above it. The child needs checking the same day, but the tooth stays out — and the real follow-up concerns the adult tooth that arrives years later.

The call

A father in RBS Bet phoned on a Friday afternoon. His three-year-old, Naama, had been on the neighbours' trampoline with older cousins, had been bumped, and had come off with a bleeding mouth and a tooth on the mat.

He had read about putting teeth back in milk. He had done exactly that, and phoned to ask whether to try replanting it.

The answer was no, and the reason is worth understanding.

What we found

Upper left primary central incisor completely avulsed. Socket bleeding but the bone intact. The neighbouring baby tooth was slightly loose but in position. Lip swollen and cut on the inside. No other injuries; she was alert and behaving normally.

Why baby teeth are not replanted. The permanent incisor sits developing in a crypt directly above the root of the baby tooth, separated by a thin shell of bone. Pushing a baby tooth back down into that socket risks driving it into the developing tooth bud, damaging the enamel that is still forming. That produces a permanent tooth with white or brown patches, a deformed shape, or a bent root — an outcome that lasts a lifetime and is far worse than a gap for a few years.

There is a second reason. A replanted baby tooth tends to become infected or ankylosed, and infection near a developing tooth bud causes the same damage by a slower route.

What about the gap? For a front baby tooth in a three-year-old, the honest answer is that it matters less than parents fear. Front baby teeth are not major space maintainers; the canines and molars hold the arch. Speech is very rarely affected long-term at that age. The permanent tooth will arrive at around six or seven.

What we did

Cleaned the socket gently, checked for retained fragments, and irrigated the lip laceration — grit in a lip wound is easy to miss and causes a permanent tattoo if left. No sutures needed.

Checked the neighbouring loose tooth: mobile but not displaced, so left alone to tighten up on its own, which baby teeth generally do.

Paracetamol, soft cold food for a few days, and no dummy or bottle-teat use for a week to let the socket settle.

Then the important part: the follow-up plan. We explained that the injury is not really over. The permanent tooth developing above that socket needs watching, and we would review at six months, twelve months, and then annually until it erupts. Roughly a quarter of avulsed primary incisors are associated with some disturbance to the permanent successor, ranging from a small white mark to a significant defect. Knowing it is coming means it can be treated promptly and cosmetically when the tooth arrives.

The outcome

Healed within two weeks. She adapted immediately and, according to her father, told everyone at gan that she had lost a tooth like a big girl.

At six years old the permanent incisor came through with a small white patch on the enamel — a mild enamel defect from the injury. It was treated with a simple resin infiltration and is now invisible.

What to do if this happens to you

1. Do not replant a baby tooth, and do not let anyone else.
2. Control the bleeding with gentle pressure on clean gauze for ten minutes.
3. See a dentist the same day to check the socket, the neighbouring teeth and the lip.
4. Find the tooth if you can. If it cannot be found, it must be accounted for — a tooth can be pushed up into the gum or, rarely, inhaled.
5. Cold food and drink, and soft food for a few days.
6. Keep the long-term reviews. The permanent tooth is the thing being watched.

Child's tooth knocked out in RBS or Beit Shemesh? Send Ramat Beit Shemesh Urgent Dental Care a photo on WhatsApp https://wa.me/972559858845 or call 055-985-8845. Harav Kook 28/1, Beit Shemesh.

Based on real cases treated at the clinic. Names have been changed.