You bit into something, felt a crunch that wasn’t food, and now there’s a crown in your palm or a crater where a filling used to be. Almost everyone asks the same thing first: do I need to see someone right now, or can this wait? The answer comes down to two things whether the tooth hurts, and whether the exposed surface is doing damage.
Key takeaways
- A lost filling or crown is rarely an emergency on its own — but it becomes one fast if there’s pain, throbbing, or lingering hot/cold sensitivity.
- Save the crown. An intact crown can often be re-cemented the same day, far cheaper than replacing it.
- Protect the tooth with drugstore temporary cement, dental wax over sharp edges, and chewing on the other side.
- Don’t let it ride for weeks. Unprotected teeth decay and crack quickly, turning a simple re-cementation into a root canal.
Why fillings and crowns come loose
Restorations are materials bonded to a tooth, and bonds age. The usual culprits:
- New decay underneath the most common cause. Bacteria work under the margin, soften the tooth holding the restoration, and the seal fails.
- Cement wear. Crown cement lasts years, not forever.
- Sticky or hard foods like caramel, taffy, and ice.
- Grinding and clenching, which put heavy lateral force on restorations.
- A crack in the tooth itself. Sometimes the restoration didn’t fail — the tooth beneath it did.
Because the cause is usually invisible from the outside, popping the crown back on and hoping for the best can seal real decay in and let it grow.
What to do in the first hour
Find the crown and keep it. Rinse it, dry it, and put it in a small container not a napkin that gets thrown out. Intact crowns are very often reusable.
Rinse with warm salt water to clear debris and calm irritated gum tissue.
Cover the tooth. Temporary dental cement is sold at most San Antonio pharmacies, labeled for lost fillings or temporary re-cementing. Follow the directions, seat the crown gently, and bite down. If the crown is broken or won’t seat cleanly, use the cement to fill the cavity instead of forcing it.
Smooth sharp edges with a bit of dental wax so a jagged edge can’t shred your tongue or cheek.
Chew on the other side. An unprotected tooth is weak, and one wrong bite can fracture it below the gumline.
Never use super glue. It’s toxic to the pulp, can ruin an otherwise reusable crown, and makes professional re-cementation much harder.
When it can wait and when it can’t
Usually fine to schedule within a few days if the tooth is painless, the edges are smooth, temperature doesn’t bother it, and the crown came off whole.
Get seen the same day if you have:
- Throbbing, spontaneous, or worsening pain
- Hot or cold sensitivity that lingers after the stimulus is gone
- Pain when air hits the tooth, or a dark or pink spot at its center the nerve may be exposed
- A sharp edge cutting your tongue or cheek
- Swelling of the gum, face, or jaw, or a bad taste possible infection
Lingering temperature sensitivity is the one people talk themselves out of. It often means the pulp is inflamed — and the window where the tooth is still savable without a root canal doesn’t stay open forever.
What re-treatment looks like
If the crown is intact and the tooth is sound, it’s straightforward: clear the old cement, check the fit and bite, re-cement. Many patients are out in under an hour Tarsem Lal, DDS, and the team at Emergency Dentist of San Antonio handle same-day re-cementations and restorations routinely.
If there’s decay underneath, it comes out first and the tooth may need a build-up before the crown goes back on. If too much structure is gone, a new crown is made — usually with a temporary placed the same visit. Lost fillings follow the same logic: clear the decay, then replace the filling or step up to a crown if the remaining walls are too thin.
A note on putting it off
This is a problem that gets postponed indefinitely which is why University of Texas at San Antonio students so often turn up mid-semester with a tooth that was “fine” for two months and now needs a root canal. Evening and weekend appointments exist so this doesn’t have to compete with class or a shift, and the Nacogdoches Road office is an easy drive from Schertz, Live Oak, Converse, Helotes, and Alamo Heights.
Get it handled before it becomes something bigger
If your crown is in your hand or your filling is gone, call 210-807-7205. Same-day appointments are available, and bringing the crown gives you the best shot at the fastest, cheapest fix. More on the Walk-In Dentist in San Antonio, TX and Emergency Dentist in San Antonio, TX pages.
Frequently asked questions
How long can I go without it? Days, not weeks. Exposed dentin decays fast and unsupported walls crack easily. Aim to be seen within a week even if nothing hurts.
Can my old crown be reused? Often, yes if it came off whole and the tooth underneath is healthy. That’s the cheapest outcome, which is why saving it matters.
Is drugstore temporary cement safe? It’s fine as a short-term bridge to your appointment, but it’s not a repair and won’t hold up to normal chewing for long.
I swallowed my crown. Now what? Swallowed crowns almost always pass without incident call so a replacement can be planned. If you coughed, choked, or have chest discomfort, seek medical attention; an inhaled crown is a medical concern.
Will putting it back on hurt? Simple re-cementation usually needs no anesthetic. If decay has to be cleaned out first, the area is numbed.