Three tiers. Trouble breathing or swallowing, spreading facial swelling, fever with swelling, bleeding pressure will not stop, or a blow to the face goes to an emergency room now. A knocked-out permanent tooth or pain you cannot control goes to a dentist now. A broken tooth that hurts, a lost crown, or an abscess without spreading swelling goes within days. A chip that does not hurt, mild sensitivity, or anything cosmetic waits for a regular appointment.
Now, and the hospital comes first
Call 911 or go to an emergency room for any of these. Do not call a dental office first.
- Any difficulty breathing. This is a 911 call.
- Trouble swallowing, drooling because swallowing hurts, or a muffled or changed voice.
- Facial swelling spreading toward the eye, or an eye starting to close.
- Swelling under the jaw, in the floor of the mouth, or travelling down the neck.
- Fever or chills with facial swelling.
- Being unable to open your mouth more than about a finger's width.
- Bleeding that steady pressure on gauze will not control.
- A blow to the face with a possible broken jaw, or any loss of consciousness.
A hospital manages the dangerous part: imaging how far an infection has spread, intravenous antibiotics, drainage, protecting the airway, ruling out a fracture. It generally cannot repair the tooth, so the dental visit follows once you are safe. This list does not improve overnight, and the cost of being wrong about it is not a cost anyone should accept.
Now, and a dentist is the right call
- A knocked-out permanent tooth. The AAE says to act within 30 minutes: pick it up by the crown and never the root, keep it moist at all times, and see a dentist or endodontist straight away. This is the one dental problem measured in minutes.
- A tooth knocked loose or pushed out of position. Do not push or wiggle it. It needs stabilising before the socket sets around the wrong position.
- Pain you cannot control. Over-the-counter relief taken as the label directs is not touching it, or the pain is keeping you from sleeping or eating.
- Facial swelling that is staying local, without fever. Not yet a hospital problem, but an infection with a clock on it.
- Bleeding from a socket that has slowed but keeps restarting. If steady pressure controls it, the dentist. If it does not, see the list above.
First aid for each of these, scenario by scenario, is in how to handle a dental emergency, and the knocked-out tooth has its own minute-by-minute page: the first hour. A child's knocked-out baby tooth is the exception to all of it and should never be pushed back in.
Soon: days, not weeks
- A broken tooth that hurts. Pain on biting or to temperature means the fracture has reached something that feels.
- A lost crown or filling. Rarely painful, but the tooth underneath is unprotected and the teeth beside it start drifting into the space within days.
- A gum bump that drains, with a bad taste and no facial swelling. The AAE describes an abscess as infection in or around the root after the tissue inside the tooth dies, and notes it may or may not be painful. Draining is not healing.
- A tooth still wearing a temporary crown past its date. A temporary is designed to come off. Leaving one in place is how a finished root canal is lost.
- New sensitivity to heat, or sensitivity that lingers after the source is gone. The AAE treats lingering pain as a sign the pulp is irreversibly damaged, and that generally means root canal treatment rather than a filling.
- An orthodontic wire or bracket digging into your cheek. Cover it with wax and call. It is uncomfortable, not dangerous.
For the first two, a cracked or chipped tooth in the first 24 hours and what to do the night a filling or crown comes off cover the wait. A crown that has come off in one piece can often be recemented if you keep it, so bring it with you.
What genuinely waits
- A chip you can only find with your tongue, with no pain and no sharp edge.
- Cold sensitivity that stops the moment the cold goes. The AAE describes momentary sensitivity as generally not signalling a serious problem.
- A dark line or stain at the edge of an old filling, with nothing else going on.
- A tooth you dislike the look of, or a whitening or veneer question.
- A cleaning you have put off, as long as nothing hurts.
- Gums that bleed a little when you floss. Worth raising at the next visit, not worth an urgent call.
Waiting on these is a legitimate plan, not neglect. It is also how they get handled properly rather than patched at nine at night. Book them into a routine exam and cleaning, and mention bleeding gums when you do, because that is a gum disease conversation rather than a tooth one.
Four questions that sort most of it
- Is it hard to breathe, to swallow, or to open your mouth? Yes means the hospital, now.
- Is swelling spreading, or is there a fever with it? Yes means the hospital, now.
- Is there bleeding that steady pressure will not stop? Yes means the hospital, now.
- Is the pain stopping you sleeping, or ignoring over-the-counter relief taken as directed? Yes means a dentist today.
Four noes puts you in the soon or the waits column, and a phone call settles which. Describing it to a front desk costs nothing and takes two minutes.
Two that look like they can wait and cannot
A toothache that stopped on its own
Severe pain that disappears overnight usually means the tissue inside the tooth has died. The infection is still in the bone, still able to spread, and now silent. Book the exam and say the pain stopped. What to do while a toothache is still going covers the pain itself; why the relief is misleading covers the silence.
A knocked-out tooth you put back yourself
Replanting it is the first aid, not the treatment. The AAE's instruction is to see a dentist or endodontist within 30 minutes of the injury either way. The tooth needs splinting and the socket needs checking, and the tissue inside usually dies whether or not the tooth feels normal.
What waiting actually costs
Three problems get measurably more expensive the longer they run. A crack extends toward the root, turning a crown into a crown plus root canal treatment and eventually into a tooth that cannot be kept. An untreated infection travels, and the NIH's dental institute is direct that an abscess from advanced decay brings pain, facial swelling and fever. A tooth that has had root canal treatment and never received its crown fractures below the gumline, and there is no repair after that.
The same institute notes that early decay usually causes no symptoms at all, which is the argument for the checkup rather than the emergency. Most of what lands on this page started as something that did not hurt.
If you still are not sure
Call. A front desk triages by what you describe, and hearing the symptoms out loud is worth more than any list. Which office to call and what to say has the phone script and the routing between the four offices, and emergency dental care explains what an urgent visit covers. Do not use a web form for anything that hurts, bleeds or swells. For everything in the waits column, request an appointment and pick your office there.