Dental Emergencies: There Are Two Different Clocks

Call 911 for swelling that is affecting breathing or swallowing. A knocked-out permanent tooth needs a dentist inside two hours — rinse it gently, do not scrub it, keep it in the mouth or in milk. Bleeding in the mouth that will not stop after 15 minutes of pressure: come in.

Almost every confused decision about tooth problems comes from not knowing which of two clocks is running.

The tooth clock is short and it belongs to a dentist. The American College of Emergency Physicians is specific: a knocked-out permanent tooth “usually cannot be saved” after two hours. Nothing an emergency room does puts a tooth back.

The infection and airway clock belongs to us, and it is the one people underestimate — swelling that spreads, a fever with a swollen face, anything affecting breathing or swallowing.

So the useful question is not “how bad is the pain.” It is “which clock am I on.”

A knocked-out permanent tooth: dentist, now

ACEP’s instructions, and each word of them matters:

Rinse it gently. “A permanent tooth that has been knocked out should be rinsed gently to remove dirt and debris (do not scrub).”

Do not scrub. The surface of the root is what allows it to be reattached, and scrubbing removes it.

Keep it wet, and the best place is the mouth. ACEP: store it “in the mouth, where saliva will help preserve it.” If that is not possible — a small child, a head injury, somebody who might swallow it — “place the tooth or teeth in a cup of milk and immediately see a dentist.”

Not water. Not a tissue. Not dry in a pocket.

And do not try to put it back in yourself.

Then the clock: “After two hours, the tooth usually cannot be saved.” That is a dentist appointment made in the next few minutes, not tomorrow — and it is worth calling an emergency dental line rather than waiting for normal hours.

A baby tooth is a different matter and is a question for a dentist rather than an emergency, but the mouth it came out of may still need looking at.

A broken tooth

ACEP says to seek immediate medical attention, and notes that “long-term dental problems can result from broken teeth.” Again the tooth itself is dental work — but “immediate” is their word, not a softened version of it.

Bleeding in the mouth

For cuts to the tongue, lip or cheek, ACEP gives a figure: if bleeding does not stop after 15 minutes, or cannot be controlled by simple pressure, go to a hospital emergency department.

Fifteen minutes of actual pressure — held, not checked every thirty seconds. The mouth bleeds impressively and mostly stops.

When a tooth problem is genuinely an emergency room problem

This is the part that gets missed, because the pain is in a tooth so people assume the answer is a dentist:

Swelling spreading into the face, the jaw, under the chin, or towards the eye.

Any difficulty breathing or swallowing, a change in your voice, or being unable to open your mouth. That is a 911 call. Swelling in the floor of the mouth and the neck can close an airway, and it is the reason dental infection is on an emergency list at all.

Fever with facial swelling. ACEP notes that toothache can cause headaches, fever and sleeplessness — and fever with visible swelling is the combination to act on rather than sit with.

Injury to the face or jaw, particularly with a tooth knocked out, a jaw that will not close properly, or numbness.

Bleeding you cannot control, as above.

And pain that is not controllable while you wait for dental care. Nobody should spend a weekend unable to sleep or think.

What each place is actually for

A dentist does the tooth: reimplantation, extraction, restoration, root canal. No emergency department does any of that, and being clear about it saves you a journey at the worst possible time.

An emergency department handles what the tooth has caused — infection that is spreading, swelling that threatens an airway, bleeding, injury, and pain that has become unmanageable.

Our emergency rooms are open every hour of every day and are walk-in, with CT, X-ray and a full laboratory in the building. Go to the nearest one, and if another emergency department is closer to you, that one is the right answer tonight.

And if you cannot tell which clock you are on, come in. Working out whether swelling is a dental inconvenience or an airway problem is exactly the kind of question you should not be answering alone at 2am. This list is not exhaustive and you are not expected to assess your own face.

Questions people actually ask

It is Saturday night, the pain is unbearable, and no dentist is open. Come in. Unmanageable pain is a reason to be seen, and so is any of the swelling picture above. We cannot fix the tooth and that is not the same as being unable to help.

Can you just pull it out? No — that is dentistry, and no emergency department does it. What can be addressed is infection, swelling, bleeding and pain while dental care is arranged.

My tooth came out. Should I go to you or a dentist? A dentist, inside two hours, with the tooth in your mouth or in milk. Come to us if there is also facial injury, bleeding that will not stop, or you were knocked out.

Half my face is swollen but I can breathe fine. Be seen today. Spreading facial swelling is the presentation that becomes an airway problem, and it does so faster than people expect.

Is a dental abscess an emergency? Any spreading swelling, fever, or difficulty breathing or swallowing, yes. This page will not tell you what is causing the swelling — the swelling is what decides the door.

I chipped a tooth and it does not hurt. A dentist, not urgently. ACEP notes broken teeth can cause long-term problems, so do not leave it indefinitely.

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Knocked-out tooth: dentist within two hours, kept in the mouth or in milk, never scrubbed. Swelling affecting breathing or swallowing: call 911. Both of our emergency rooms are open 24 hours a day, every day of the year — walk in, no appointment and no referral. Find your nearest emergency room →

Related reading: which door do you need · telehealth, clinic or emergency room

Sources

55. Dental Emergencies — Know When To Go — American College of Emergency Physicians. https://www.emergencyphysicians.org/article/know-when-to-go/dental-emergencies

This article is general information, not a diagnosis. It gives no doses. If you are unsure, come in — this list is not exhaustive and you are not expected to assess your own face. If it might be an emergency, treat it as one and call 911.