My Crown Came Off or Broke: What to Do in the Next Hour, and What Happens Next

Practice clinician: Gerald M. Marlin, DMD, MSD, prosthodontist, Elite Prosthetic Dentistry, Friendship Heights, Washington, DC. Last updated October 30, 2026.

A crown that comes off at dinner, or breaks on something hard, is the most common restorative emergency in a mouth with older dental work. It is rarely dangerous and usually fixable, and the next hour matters: what you do with the crown and the tooth decides whether the repair is simple or complicated. This page covers what to do and not do now, what can wait until office hours, what the visit involves, why crowns come off, and what a lost crown often reveals about the others.

In the Next Hour

1. Find the crown and keep it. Rinse it gently, dry it, and put it in a small container or bag. Do not wrap it in tissue, which gets thrown away. Bring it to the visit even if it is broken; it tells the clinician what happened and may be reusable.
2. Do not use glue. Household glue, superglue and repair kits damage the tooth and the crown. A crown glued on with the wrong material often has to be cut off.
3. Check whether it seats. If the crown is intact, the tooth is not painful, and the crown sits fully back in place without force, pharmacy temporary dental cement can hold it until the visit. If it does not seat easily, leave it off. Never force it.
4. Protect the tooth. Avoid chewing on that side. If the exposed tooth is sensitive to cold, keep cold drinks away from it. Keep the area clean with gentle brushing.
5. Call the office. During hours, call (202) 244-2101; patients are triaged by urgency and same-day visits are arranged when the schedule allows. After hours, follow the voicemail prompts for urgent care instructions.
6. Pain relief. Over-the-counter pain relief as directed on the label and as approved by your physician.

When to Go to the Emergency Room Instead

A lost crown is not an emergency room situation on its own. Go to the emergency room, or call 911, for facial swelling that is spreading, fever with swelling, uncontrolled bleeding, difficulty swallowing or breathing, or facial trauma. Tell the office afterward.

What Can Wait Until Office Hours

A crown that has come off cleanly, with no severe pain and no swelling, can wait until office hours, overnight or over a weekend if necessary, with the tooth protected as above. The sooner it is seen the better, because an uncovered tooth can shift slightly and become more sensitive, but it is not a reason for an emergency room visit. A broken crown that has left a sharp edge can be covered with orthodontic wax from a pharmacy until the visit.

What the Visit Involves

The tooth is examined and X-rayed. The crown is inspected. Three findings are common:

• The crown is intact and the tooth is sound. The tooth and crown are cleaned and the crown is recemented. This is the simplest outcome and the reason to keep the crown.
• The crown is intact but the tooth has changed. Decay or a fracture beneath the crown means the tooth is rebuilt first, with a filling, a core, or where the nerve is involved, root canal treatment, and then a new crown is made. The old crown may serve as a temporary.
• The crown is cracked, worn or no longer fits. A new crown is made. A provisional protects the tooth meanwhile. Many replacement crowns can be made quickly in the practice’s on-site laboratory; the timing is confirmed when the tooth is examined.

The visit also checks the bite, because a crown that was being loaded unevenly will fail again if the bite is not corrected.

Why It Happened

• Cement wash-out. Cements dissolve slowly over decades; a crown can be firmly in place one week and off the next.
• Decay under the crown. The most common reason a crown comes off with soft tooth inside it. It is painless until late and is often the first sign of a pattern described in our guide on why decay starts under crowns after fifty.
• Fracture. Of the tooth, of a post and core beneath the crown, or of the crown itself, usually under grinding or an uneven bite.
• The bite. A crown that has been catching or loading unevenly for years eventually gives. Our guide on why crowns keep breaking explains the forces.

What an Emergency Often Reveals

A lost crown is frequently the first visible event in a mouth where several crowns of the same age are reaching the end of their service. The visit for the lost crown is a good moment to examine the others: X-rays and probing of every margin, a check of the bite, and a classification of each crown as sound, monitor, plan to replace, or replace now. Patients who do this plan the replacement of aging dentistry on their own schedule rather than one emergency at a time. Our guide on when to replace old crowns and bridges explains the judgment, and signs your dental work is wearing out is a quick self-check.

How Elite Prosthetic Dentistry Handles a Lost or Broken Crown

Call the office; patients are triaged by urgency and same-day visits are arranged when the schedule allows. The tooth is examined and X-rayed, the crown is recemented if the tooth is sound, and where a new crown is needed the practice’s on-site laboratory, operating since 1985, allows it to be made without waiting on an outside laboratory. Dr. Gerald M. Marlin evaluates the tooth, the crown and the bite together, and the visit ends with a recommendation for the other crowns of the same age when there are any.

When Another Setting Fits Better

A crown that came off cleanly from a sound tooth in a patient with a regular general dentist can be recemented there, and that is often the quickest route. A patient with severe pain, swelling or fever should be seen the same day by whichever office can see them, and by the emergency room for the signs listed above. The practice sees patients in all of these situations and will say when a simpler route is appropriate.

Documented Cases

• A fractured filling that led to the discovery of generalized wear and a collapsed bite, a small emergency that revealed a larger pattern.
• Loose, failing crowns and hidden decay: strategic teeth saved and both arches rebuilt.
• Aging crowns and a long-standing bridge replaced as one coordinated plan.

Related Reading

• Restorative dental emergencies: all situations
• Loose dental crown
• Pain under a dental crown
• When should old crowns and bridges be replaced?
• Why am I getting decay under my crowns?

Call the Office

During office hours, call (202) 244-2101 and describe what happened. After hours, follow the voicemail prompts for urgent care instructions. For a non-urgent evaluation of a crown that has been recemented elsewhere, or of the other crowns, request an appointment or call (202) 244-2101.