In the first hour after a dental injury at school, the things that change the outcome are simple: find the tooth or the fragment, store it in milk, control the bleeding, and get the child assessed. Most parents are not there when it happens, so what the school office does in the first few minutes matters, and so does the phone call that follows.
This article covers the logistics rather than the clinical detail — what a school can and cannot do, what to ask for by injury type, and when the right destination is a hospital emergency department rather than a dental practice.
If a school has called about a dental injury, the practice can talk a parent through the next step while they are on the way.
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What can the school office actually do?
School first-aid staff are trained to manage bleeding, swelling and pain, and to decide whether an ambulance is needed. That is roughly the limit of it, and it is a sensible limit.
Schools will not reimplant a tooth, will not give medication without written consent, and generally will not drive a child anywhere. What they will usually do is call the parent, apply pressure to a bleeding lip, offer a cold pack, and hold on to any tooth or fragment they can find.
Two requests are worth making by phone, because they are easy for a school to do and they matter a great deal later: keep the tooth or the fragment, and put it in milk.
What changes the outcome in the first hour, by injury type?
A knocked-out adult tooth
This is the one genuinely time-critical dental injury. An adult tooth that has come out whole does best when it goes back into its socket quickly, because the living cells on the root surface do not survive long once they dry out.
Hold the tooth by the crown, the part normally visible in the mouth, and not by the root. If it is dirty, rinse it briefly in milk or saline rather than scrubbing it. If the child is old enough to cooperate, the tooth can be eased back into the socket the right way round and held there by biting gently on a clean cloth. If reimplanting is not realistic, put the tooth in milk instead and bring it in.
Either way, the child needs to be seen urgently. The full sequence is set out in the first-hour guide for a knocked-out tooth.
A knocked-out baby tooth
A baby tooth is not put back. Reimplanting it can damage the developing adult tooth sitting in the bone directly above it, and that damage is not reversible.
The child should still be assessed. A clinician will check that the whole tooth is accounted for, that no fragment has been driven up into the gum, and that the adult tooth underneath has not been disturbed.
A chipped or fractured tooth
Find the fragment if anyone can, and keep it in milk. Fragments can sometimes be bonded back onto the tooth, and even when they cannot, having the piece tells the clinician exactly how much tooth is missing.
Cold sensitivity after a chip is common and is worth mentioning on the phone. There is more detail in what to do in the first hour after a chipped tooth.
A tooth pushed out of position or loosened
A displaced or wobbly tooth should not be forced back into line by anyone at school. Soft food, nothing bitten on that side, and an assessment as soon as one is available.
Loosened teeth often settle, but they need to be looked at rather than watched at home, because the socket and the nerve can both be involved.
A bleeding lip, cheek or tongue
Firm, continuous pressure with clean gauze or a clean cloth is the whole treatment for most soft-tissue bleeding. Pressure held for ten to fifteen minutes without lifting to check works far better than repeated dabbing. A cold pack on the outside helps with swelling.
Lips and tongues bleed heavily and look worse than they are. If bleeding has not slowed after steady pressure, if a cut crosses the lip border, or if the wound is gaping, that is a matter for a doctor or an emergency department.
A suspected jaw injury, or a knock to the head
Loss of consciousness, vomiting, confusion, unusual drowsiness, or a jaw that will not close properly are hospital matters, not dental ones. That is an ambulance and an emergency department.
Teeth can be dealt with afterwards. A head injury cannot wait behind them.
Parents often ring simply to work out where to go, and that is a reasonable reason to call.
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What is worth keeping in the school bag and the car?
- A small carton of long-life milk. It stores well, needs no refrigeration until opened, and is the practical way to transport a tooth or a fragment.
- A clean sealable container or a small zip bag.
- A few sterile gauze squares for pressure.
- An instant cold pack.
- A card with the dental practice number and the parent's mobile number on it.
Milk is recommended because its acidity and salt concentration sit close to those of the cells on the root surface, so it keeps them alive far longer than plain water does. Water is a poor choice: it causes those cells to swell and rupture. If there is genuinely nothing else, the child's own saliva — the tooth held inside the cheek, where the child is old enough not to swallow it — is better than water.
What should the school have on file?
Most enrolment forms ask for a GP. Very few ask for a dentist. Adding the dental practice number alongside the GP's on the medical form means the office can ring directly rather than waiting to reach a parent first.
It is also worth recording any medical condition, allergy, bleeding disorder or medication, and any known anxiety about dental treatment, so the school is not guessing under pressure.
How does calling ahead help?
Every call from someone in pain is treated as urgent, and that includes a child who has been hurt at school. Calling ahead means the practice knows what is coming, can advise on storage and pressure while the family travels, and can prepare for the right kind of appointment rather than a general one.
Emergency appointments are generally scheduled in the afternoons. Ringing early in the day gives the best chance of fitting into that part of the diary.
No question is a bad question on that call. Parents regularly apologise for ringing about something they think is minor, and they should not.
Quick answers
Is a knocked-out baby tooth an emergency?
It needs to be checked, but it is not treated the same way as an adult tooth. The baby tooth is not reimplanted, because doing so risks the adult tooth developing underneath. The assessment is about what else was damaged.
How long can a knocked-out adult tooth be out of the mouth?
The chances are best when it is reimplanted or placed in milk within minutes rather than hours, and they fall away steadily after that. No outcome can be promised at any interval, which is exactly why speed and correct storage are worth the effort.
Can water be used instead of milk?
Water is the least suitable option and should be avoided for storing a tooth or a fragment. Milk first, saline second, the child's own saliva third.
Should the child go to the dentist or the hospital?
Teeth and gums are dental. Head injury, unconsciousness, vomiting, confusion, a jaw that will not close, or bleeding that cannot be controlled are hospital. When in doubt, the hospital handles the head injury and the teeth are reviewed afterwards.
Where to go from here
The practice sets out how children's urgent appointments work on the children's dental emergency page, and the general process for adults and children alike on the emergency page. The children's dentistry hub lists everything else offered for children. General background on dental injuries is available from healthdirect.
Anyone unsure whether an injury needs to be seen today is welcome to ring and describe it.
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Written and reviewed by Humzah Aly, Oral Health Therapist. This article is general information only and is not a substitute for personalised dental advice. Please see a dental practitioner to discuss what is right for you.
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