Emergency Crown Placement: A Quick Guide to Dental Recovery
Two situations bring people in urgently for crown treatment. A crown that has come off, and a tooth that has fractured to the point where it needs full coverage.
Neither is always painful, which is why both are frequently postponed. That postponement is the problem — the reason to be seen promptly has less to do with discomfort than with what happens to an unprotected tooth over the following days.
Why It Is Time-Sensitive
Teeth move. A prepared tooth left uncovered will drift, and the teeth either side and opposite will move into the space. Within a couple of weeks the original crown may no longer fit, turning a simple recementation into a remake.
The surface deteriorates. A prepared tooth has had its enamel removed, exposing dentine. That surface is more susceptible to decay, and decay at the margin can quickly render the tooth unrestorable.
Sensitivity increases. Exposed dentine responds to cold, sweet and touch, and this usually worsens over days.
Sharp edges cause soft tissue damage. A fractured tooth can lacerate the tongue or cheek repeatedly.
Fractures propagate. A crack under continued function tends to extend, and a fracture that could have been crowned can become one that requires extraction. Our article on choosing between a crown and extraction covers where that line sits.
If Your Crown Has Come Off
Keep it. Rinse it, dry it and store it somewhere safe — a small container rather than a tissue, which is where crowns most often get thrown away. If it is intact and the tooth beneath is sound, it can frequently be recemented, which is faster and less expensive than a remake.
Look at what came out. If a metal post is attached and the crown came off with a chunk of tooth, the situation is more complicated and needs prompt assessment.
Do not superglue it. This is worth stating plainly. Superglue is not biocompatible, it is difficult to remove, and it commonly damages the tooth surface to the point where the crown can no longer be reused. It also seals bacteria in.
Temporary dental cement from a pharmacy is acceptable as a short-term measure if you are comfortable using it, and is preferable to leaving the tooth bare. It is not a substitute for treatment.
Avoid chewing on that side, avoid sticky foods, and keep the area clean — brush the exposed tooth gently.
Sensitivity relief. Sensitive toothpaste applied directly to the exposed surface often helps. Avoid extremes of temperature.
Call the practice. Aim to be seen within days rather than weeks.
If a Tooth Has Fractured
Rinse gently with warm water and look at what has happened. Keep any fragment in milk or saliva, as fragments can occasionally be bonded back.
Cover a sharp edge with orthodontic wax or sugar-free gum if it is cutting your tongue. Avoid using the tooth. Take analgesia if needed.
Seek same-day care if there is significant pain, swelling, bleeding that does not stop, or if the fracture has exposed a pink or red area in the centre of the tooth, which indicates the pulp is involved.
Our emergency dentist page explains how urgent appointments work, and our article on a broken tooth with swelling covers the more serious presentations.
What Happens at the Appointment
Assessment first. Examination and usually a radiograph, to establish how much sound tooth remains, whether the pulp is involved, whether decay is present beneath the old crown, and whether the tooth is restorable at all.
Then one of several routes.
Recementation, where the existing crown is intact, fits well, and the tooth beneath is sound. Often completed in a single short appointment.
A new crown, where the original is damaged, no longer fits, or the tooth requires re-preparation. This usually involves preparation, a temporary crown, and a second appointment for fitting. Our dental crowns page explains the process.
Core build-up first, where insufficient tooth structure remains. A restoration is placed to rebuild the foundation before the crown.
Root canal treatment, where the pulp is involved or infected. Our root canal page covers this, and our article on antibiotics for tooth infection explains why source control rather than tablets resolves infection.
Extraction, where the fracture extends below the gum or bone level and the tooth cannot be restored predictably. Replacement options — dental implants, a dental bridge or a denture — are then discussed.
Temporary bonding, where an immediate improvement is needed while a definitive plan is made. Our article on emergency dental bonding covers this option.
Why Crowns Come Off
Understanding the cause matters, because recementing a crown that failed for a structural reason simply repeats the problem.
Common causes include decay at the margin undermining the fit; cement washing out over years of function; insufficient retention in the original preparation; a fracture of the underlying tooth; grinding or clenching generating forces beyond what the cement can resist; and sticky foods pulling at a crown already marginally retained.
If the same crown comes off repeatedly, the underlying reason needs addressing rather than the crown being recemented again. Our article on grey lines at the gum with older crowns covers another common issue with ageing crowns.
After Treatment
Expect some sensitivity for a few days, particularly if the tooth was recently prepared or root treated. Chew carefully on that side initially. If the bite feels high or uneven, contact the practice — a crown that is proud of the bite causes discomfort and can fracture.
Longer term, cleaning the crown margin thoroughly including between the teeth is what determines how long it lasts, since decay at the margin is the most common cause of eventual failure. Regular check-ups allow margins to be monitored. If grinding contributed, a night guard is worth discussing.
Frequently Asked Questions
My crown fell off but it does not hurt — is it urgent?
It is more urgent than the absence of pain suggests. The exposed tooth surface is vulnerable to decay, the neighbouring and opposing teeth begin to drift within days, and if the tooth moves the original crown may no longer fit. What could have been a simple recementation becomes a remake. Aim to be seen within days rather than waiting for symptoms.
Can I glue my crown back myself?
Not with household adhesives — superglue in particular is not biocompatible, is very difficult to remove, and frequently damages the crown or tooth so that the original can no longer be reused. Temporary dental cement from a pharmacy is an acceptable short-term measure if you are comfortable using it, and is better than leaving the tooth exposed. It is a holding measure only.
Will my old crown fit again?
Often yes, if it is undamaged, the tooth beneath is sound and you are seen promptly. Recementation is quicker and less expensive than a remake. It will not be possible if the crown is fractured, if decay has developed beneath it, if part of the tooth came away with it, or if the teeth have already drifted. Bringing the crown with you is what makes this option available.
How quickly can an emergency crown be made?
It depends on the practice and the technique. Where a laboratory-made crown is required, a temporary crown is fitted at the first appointment and the definitive crown fitted at a second visit. The temporary protects the tooth, maintains the space and restores appearance in the interim. Your clinician will explain the timeline for your particular case at the assessment.
What if the tooth underneath is broken too?
This is assessed with an examination and radiograph. Where enough sound structure remains, a core build-up rebuilds the foundation before a new crown is made. Where the fracture extends below the gum or bone level, the tooth may not be restorable predictably, and extraction with a discussion of replacement options becomes the more honest route. This is why assessment precedes any decision.
Is a same-day appointment always necessary?
Same-day care is appropriate where there is significant pain, swelling, uncontrolled bleeding, or exposure of the pulp — a visible pink or red area in the centre of the tooth. A crown that has come off cleanly with no pain does not usually need same-day attention but should be seen within days. Contact the practice and describe what has happened so it can be prioritised appropriately.
Next Steps
If a crown has come off or a tooth has fractured, contact us and bring the crown or fragment with you.
You can arrange an urgent appointment at our Wimpole Street practice, and current fees are set out on our pricing page.
Dental Disclaimer
This article is provided for general information only and does not constitute personalised dental advice. Whether a crown can be recemented, or a fractured tooth restored, requires examination and radiographs by a registered dental professional. Temporary measures described here are holding steps only and do not replace treatment.
Next review due: 6 September 2027
Written by Dr Elisabeth Lichtmannegger · reviewed by Dr Elisabeth Lichtmannegger, GDC 319325
This article is general information, not personal clinical advice. For a diagnosis and a plan tailored to you, book a consultation with a GDC-registered dentist.
