If you lose a filling or a crown, save the piece, rinse your mouth, cover the tooth with temporary dental cement, and call your dentist that day. The tooth may feel fine at first, but its softer inner layer is now open to food, bacteria, and cold air, which makes it easier to crack or decay.
This happens more often than people expect. Crowns last between 5 and 15 years with proper care, and fillings wear down over time too, so most people with dental work will need a repair at some point. Below, I’ll walk you through the first steps, how fast you need to be seen, how to protect the tooth at home, why it happened, and how I repair it in my office.
Key Takeaways
- Save the crown or filling piece and bring it to your appointment.
- Call your dentist the same day, even if nothing hurts yet.
- Temporary dental cement from a pharmacy can protect the tooth for a few days.
- Never use superglue or household glue to put a crown back on.
- A lost crown can often be cemented back on if the tooth underneath is still healthy.
What Should You Do Right After You Lose a Filling or Crown?
Right after you lose a filling or crown, save the piece, rinse your mouth, call your dentist, and protect the open tooth until your visit. A tooth that has lost its filling or crown is weaker than it looks and can break if you bite down on something hard, so the goal is to keep it clean and out of harm’s way.
Follow these five steps in order.
1. Save the piece
Find the crown or any pieces of the filling, rinse them gently, and keep them in a small bag or container. A crown in good shape can often go right back on.
2. Rinse with warm salt water
Swish gently to clear food and debris out of the open spot. Avoid hard spitting or poking at the tooth.
3. Call your dentist
Tell the office which piece came out and how the tooth feels. That detail helps the team book the right type of visit.
4. Cover the tooth
Use temporary dental cement or a temporary filling kit from a pharmacy to cover the gap. Dental wax works well over a sharp edge that rubs your tongue or cheek.
5. Chew on the other side
Keep food and biting pressure away from the tooth until it’s repaired, and skip anything hard or sticky.
These steps keep the damage small. The next thing most people want to know is how soon the tooth needs to be seen.
Is a Lost Filling or Crown a Dental Emergency?
A lost filling or crown is urgent, but it’s usually not an emergency unless you have pain, swelling, or a sharp edge cutting your mouth. Pain changes things, because it often means decay has gone deep or the nerve is exposed.
The table below shows how soon to be seen in each situation.
| Situation | How soon to be seen |
| No pain, crown saved | Within a few days |
| Mild sensitivity to cold or sweets | Within 1 to 2 days |
| Sharp edge cutting your tongue or cheek | Same day |
| Strong pain or throbbing | Same day |
| Swelling, pus, or fever | Same day, or the ER if swelling spreads to your face or neck |
When a patient calls my office about a lost crown, I’d rather see them within a few days even if nothing hurts. Decay under an old crown often causes no pain until it’s well advanced. Pain, swelling, and bleeding are the usual signs of a true dental emergency, and any of them means you should be seen the same day.
Until your visit, a few drugstore items can keep the tooth protected.
How Can You Protect the Tooth Until Your Appointment?
You can protect the tooth until your appointment with temporary dental cement and a few simple habits. These are short-term fixes that buy you days, not weeks.
A loose crown can be re-cemented with temporary cement from a pharmacy, but never with superglue. Household glues aren’t made for use in the mouth and can make a proper repair harder.
These home steps help most:
- Temporary cement or filling material: Press a small amount into the gap left by a filling, or use a thin layer to seat a crown.
- Sensitive toothpaste: Dab a little on the exposed tooth and leave it there to ease sensitivity to cold.
- Clove oil: Apply a small amount to the sore spot with a cotton swab for short-term relief.
- Pain relievers: Over-the-counter options like ibuprofen or acetaminophen can ease soreness. Follow the label, and don’t put aspirin directly on the tooth or gums, since it can cause mouth sores.
- Soft, lukewarm foods: Skip sticky candy, gum, nuts, ice, and very hot or cold drinks.
These steps keep you comfortable, but they don’t repair the tooth.
Can you put a crown back on yourself?
Yes, you can put a crown back on yourself for a short time if it slides on easily and sits the way it did before. Clean the inside of the crown, add a thin layer of temporary cement, seat it, and bite down gently.
Don’t force it. Pushing a crown that won’t seat can crack the tooth, and a crown sitting crooked can throw off your bite and make the tooth sore. If it doesn’t fit easily, keep it in a container and bring it with you.
Why Do Fillings and Crowns Fall Out?
Fillings and crowns usually fall out because of new decay underneath, wear over time, or too much force on the tooth. Decay and fracture are the main reasons fillings fail, and larger fillings that cover more of the tooth are more likely to fail than small ones.
Other common causes include:
- Grinding or clenching: Nighttime grinding puts heavy, repeated pressure on crowns and fillings.
- Sticky or hard foods: Caramel, taffy, ice, and hard candy can pull a crown loose or crack a filling.
- Old cement: The cement under a crown can slowly wash out over the years, letting bacteria in at the edge.
The tooth itself usually shows which one happened. Fresh decay under a crown points to a seal that broke down, while a clean tooth and an intact crown often means the cement simply wore out. That difference shapes the repair you’ll need.
How Does a Dentist Fix a Lost Filling or Crown?
A dentist fixes a lost filling or crown by checking the tooth underneath first, then choosing the simplest repair that will hold. In my office, that starts with a quick exam and an X-ray to look for decay or cracks.
Here’s what I usually recommend, based on what I find.
| What I find | Likely fix |
| Lost filling, tooth healthy | A new tooth-colored filling |
| Crown intact, tooth healthy | Clean and cement the same crown back on |
| Crown damaged or lost | A new crown |
| Deep decay near the nerve | Root canal, then a new crown |
| Tooth too broken to save | Extraction and a plan to replace it |
For a new crown, I usually recommend metal-free zirconia or all-ceramic crowns shaded to match your natural teeth, though gold can still make sense on a back molar that takes heavy chewing force. When decay has reached the nerve, I provide root canal therapy in the same office, so you won’t be sent somewhere new. The cost depends on which of these repairs you need, and I’ll go over a written estimate with you before starting.
The sooner I see the tooth, the more likely a new filling or a re-cemented crown is all you’ll need.
When Should You Go to the ER Instead of the Dentist?
You should go to the ER instead of the dentist if you have swelling that spreads into your face, neck, or eye, a fever, or trouble breathing or swallowing. These are signs an infection may be spreading, and a swollen jaw is a very serious symptom of a tooth infection.
A lost filling or crown on its own doesn’t need the ER. Emergency rooms can manage pain and infection, but an ER visit for tooth pain won’t replace a filling or re-cement a crown, so you’ll still need a dentist afterward.
Once the tooth is repaired, a few habits help keep it that way.
How Can You Keep a Filling or Crown From Coming Out Again?
You can keep a filling or crown from coming out again by catching decay early and limiting the force on your teeth. Small daily habits do most of the work.
- Regular checkups: Routine exams catch worn edges and early decay before a filling or crown gives way.
- Daily cleaning: Brush twice a day and floss around crowns, where decay tends to start at the edge.
- A custom nightguard: If you grind or clench, a nightguard takes the pressure off your dental work while you sleep.
- Hard-object habits: Chewing ice, pens, or hard candy can crack fillings and loosen crowns.
What’s the Best Way to Handle a Lost Filling or Crown?
The best way to handle a lost filling or crown is to protect the tooth right away and have it checked within a few days. Waiting is what turns a simple re-cement into a new crown or a root canal.
Most of the time, the cause is decay or wear you can’t see from the outside. Once the tooth is repaired, good daily care and a nightguard, if you grind, help the new filling or crown last for years.
Get Your Lost Filling or Crown Repaired at Roman Dental
If a filling or crown came out, call (281) 920-4200 or book online to see me at Roman Dental on Memorial Drive in West Houston’s Energy Corridor. I offer same-day emergency dental appointments whenever possible and have been repairing teeth here since 1999. Bring the crown or filling piece with you, even if it’s broken.
Frequently Asked Questions
How long can you go without a filling or crown?
You can usually go a few days without a filling or crown, but not much longer. After that, the exposed tooth is more likely to crack or decay, which can turn a simple repair into a new crown or a root canal.
Can you eat with a lost filling or crown?
Yes, you can eat with a lost filling or crown if you chew on the other side and stick to soft foods. Avoid sticky, hard, and very hot or cold foods until the tooth is repaired.
What should you do if you swallowed your crown?
If you swallowed your crown, it will usually pass on its own, but let your doctor know, especially if you have stomach pain. Go to the ER right away if you’re coughing, wheezing, or having trouble breathing, since the crown may have been inhaled instead of swallowed. The tooth will still need a new crown.
Does dental insurance cover a lost filling or crown?
Dental insurance often covers part of repairing a lost filling or crown, depending on the plan. Many PPO plans pay about 80 percent for basic work like fillings and about 50 percent for major work like crowns. Roman Dental accepts PPO insurance and provides a written cost estimate before treatment begins.
Can you get a same-day appointment for a lost filling or crown in West Houston?
Yes, Roman Dental in West Houston offers same-day appointments for a lost filling or crown whenever the schedule allows. Office hours are Monday through Thursday from 8 a.m. to 5 p.m. and Friday from 8 a.m. to 2 p.m., and online booking is available 24/7.
