If a filling falls out, keep the area clean, avoid chewing on that side, and call a dentist to have it replaced within a few days. A lost filling is common and usually not an emergency unless you have severe pain, swelling, or a sharp broken edge cutting your tongue. Waiting too long, though, lets bacteria and food into the exposed tooth, which can turn a quick replacement into something bigger. Most lost fillings are fixed in a single visit through standard fillings and restorations.
It often happens mid-bite. You’re eating toffee, a crusty roll, or popcorn, and suddenly there’s something hard and gritty in your mouth. Your tongue finds a hole that wasn’t there an hour ago. Annoying, a little alarming, and very fixable.
Sometimes the tooth underneath is too weak for another filling. In that case, CEREC same-day crowns can rebuild and protect it in one appointment, without a temporary crown or second visit.
If decay under the old filling has reached the nerve, root canal treatment may be needed before the tooth is restored. You can browse our services to see the full range of options, and patients covered under the government plan can learn more about CDCP dental care before booking.
Why do fillings fall out?
- Decay under or around the filling. The most common reason. New decay weakens the tooth structure holding the filling.
- Age and wear. Fillings don’t last forever. Composite often lasts 5 to 10 years, amalgam often longer, but it varies.
- Chewing hard or sticky foods. Ice, hard candy, caramel, and nuts are common culprits.
- Grinding or clenching. Repeated heavy force can crack fillings or the tooth around them.
- A crack in the tooth. Part of the tooth breaks away, taking the filling with it.
- Large fillings. When most of a tooth is filling, there’s less natural tooth to hold it.
- Bonding failure. Occasionally, moisture during placement or material breakdown loosens it.
Is a lost filling an emergency?
| Situation | Urgency | What to do |
|---|---|---|
| No pain, small hole | Low | Book within a few days |
| Mild sensitivity to cold or sweets | Moderate | Book within 1 to 3 days |
| Sharp edge cutting tongue or cheek | Moderate | Cover with dental wax; book soon |
| Throbbing pain or pain that wakes you | High | Call today |
| Swelling, fever, bad taste | Urgent | Same-day visit |
| Swelling spreading to eye or neck, trouble breathing | Emergency | Hospital right away |
What to do right after a filling falls out
- Remove the filling from your mouth. Don’t swallow it on purpose. If you swallow it by accident, don’t panic; it will pass.
- Rinse with warm salt water to clear out food and debris.
- Look at the tooth in a mirror. Note if part of the tooth broke too.
- Keep the filling in a small bag if you have it. It can help the dentist understand what happened, though it can’t be reused.
- Call a dentist and describe your symptoms.
- Protect the tooth until your appointment (see below).
How to protect the tooth until your appointment
- Chew on the other side.
- Avoid very hot, cold, sweet, or sticky foods.
- Brush gently around the area to keep it clean. Don’t skip it.
- Use temporary filling material from a pharmacy to cover the hole, following the package directions. It’s a short-term fix only.
- Use dental wax or sugar-free gum to cover a sharp edge if it’s cutting your tongue.
- Take over-the-counter pain relief as directed if needed.
- Use clove oil carefully on a cotton swab for short-term numbing, if you want, but don’t overuse it.
What not to do
- Don’t use household glue or superglue to reattach the filling
- Don’t leave the hole for weeks
- Don’t poke at it with sharp objects
- Don’t place aspirin directly on the gum
What happens at the dental visit?
- Exam. The dentist checks how much tooth is left and whether there’s new decay or a crack.
- X-ray. Shows decay depth and the health of the nerve and root.
- Numbing if needed for comfort.
- Cleaning out decay and any weakened tooth.
- Choosing the right repair based on what’s left.
- Restoring the tooth, often in the same visit.
Repair options compared
| Option | When it’s used | Visits |
|---|---|---|
| New composite filling | Small to medium hole, healthy tooth around it | 1 |
| Inlay or onlay | Larger area, but tooth walls mostly intact | 1 with CEREC, otherwise 2 |
| CEREC same-day crown | Large loss, cracks, or weak walls | 1 |
| Traditional lab crown | Same as above, when CEREC isn’t suitable | 2 |
| Root canal plus crown | Decay or infection reached the nerve | 1 to 3 |
| Extraction and replacement | Tooth can’t be saved | Varies |
What is a CEREC same-day crown?
CEREC uses a digital scan of your tooth instead of messy impressions. The crown is designed on a computer and milled from a solid block of ceramic right in the clinic. It’s then bonded in place, all in one appointment.
Benefits include:
- No temporary crown that can fall off or irritate the gum
- One round of numbing
- Natural-looking, tooth-coloured ceramic
- Less time away from work or school
Which filling material is right for the replacement?
| Material | Look | Strengths | Things to know |
|---|---|---|---|
| Composite resin | Tooth-coloured | Bonds to tooth, conservative, one visit | Can wear and stain over time |
| Glass ionomer | Tooth-coloured | Releases fluoride, good near the gumline and for kids | Less strong on chewing surfaces |
| Amalgam (silver) | Metallic | Very durable | Visible, less commonly used today |
| Ceramic inlay or onlay | Tooth-coloured | Strong, stain-resistant, can be made same day with CEREC | Used for larger areas |
Your dentist will pick the material based on the size of the hole, where it is, how much force it takes, and your preferences.
Does coverage help with replacing a lost filling?
Many private dental plans cover fillings and crowns at different levels, and the Canadian Dental Care Plan (CDCP) covers a range of restorative services for eligible patients. Coverage details vary, so ask the clinic to check your plan before treatment. Knowing what’s covered ahead of time removes a lot of stress.
Is it a filling or a crown that came off?
People sometimes mix them up. A filling is a small piece that fills a hole, so you’ll see a pit in the tooth. A crown is a cap shaped like a whole tooth, so you’ll find a hollow shell, and a smaller, shaped tooth stub underneath. If a crown comes off, keep it clean and bring it to your appointment, since it can sometimes be re-cemented.
How long can you wait to replace a lost filling?
Ideally within a few days, and no more than a week or 2 if you have no symptoms. The exposed dentin is softer than enamel and decays faster. Food packing into the hole also irritates the gum. The longer you wait, the more likely a simple filling becomes a crown or root canal.
Questions to ask at your repair visit
- Why do you think the filling came out?
- Is there new decay or a crack under it?
- Is another filling strong enough, or do I need an onlay or crown?
- Can it be done today with CEREC?
- Are any of my other old fillings at risk?
- Would a night guard help protect my teeth?
Understanding the reason behind a lost filling helps prevent the next one. If grinding is the cause, a guard protects every restoration in your mouth. If decay is the cause, fluoride and better cleaning between teeth matter most.
Myths about lost fillings
“No pain means no problem.” Many lost fillings don’t hurt at first. Decay can still progress quietly.
“The dentist can just glue the old filling back in.” Old fillings can’t be reused. The tooth needs to be cleaned and properly restored.
“Pharmacy temporary filling material is good enough.” It’s meant to last days, not months.
“Silver fillings must be replaced as soon as possible.” Intact amalgam fillings without decay or cracks don’t need to be replaced just because they’re old. Your dentist will advise based on their condition.
How to keep fillings from falling out
- Brush twice daily with fluoride toothpaste.
- Clean between teeth every day, where decay often starts next to fillings.
- Avoid chewing ice, hard candy, and pens.
- Wear a night guard if you grind.
- Limit sticky sweets.
- Keep regular check-ups so worn fillings are replaced before they fail.
Real-life scenarios
The caramel incident. A patient lost a small filling eating caramel. No pain. A new composite filling the next day, 30 minutes, done.
The broken cusp. Another patient’s large old filling came out along with part of the tooth wall. A CEREC crown rebuilt the tooth in one visit.
The delayed visit. A patient waited 2 months after losing a filling. By then, decay had reached the nerve, and the tooth needed a root canal and crown.
Finding a dentist in Woodbridge for lost fillings
Get your tooth checked by licensed dental professionals registered with the Royal College of Dental Surgeons of Ontario (RCDSO), who can assess the tooth properly and recommend the most conservative repair.
Columbus Dental Centre has served Woodbridge and the Vaughan community for over 26 years, trusted for family and cosmetic dental care. Patients looking for a family dentist in Woodbridge or a fast fix with CEREC same day crowns Woodbridge residents rely on will find smile design, dentures, bridges, CEREC crowns, oral surgery, fillings, root canals, dental implants, whitening, preventive care, children dentistry, and laser dentistry all in one place.
New patients and CDCP patients are welcome. Visit Suite #201, 8333 Weston Rd, Woodbridge, Ontario, call +1 647-931-1100, or email columbusdentalcentre@gmail.com. The clinic is open Mondays 10:00 AM to 8:00 PM and Saturdays 9:00 AM to 4:00 PM, along with regular weekday hours.
This article is general information. A dental exam is needed to decide the right repair for your tooth.
Frequently asked questions
Is it bad if I swallowed my filling?
Usually not. Small filling pieces pass through the digestive system without problems. If you’re coughing or have trouble breathing, seek medical care right away.
Can I brush my teeth if a filling fell out?
Yes. Gentle brushing keeps the area clean and lowers the risk of more decay.
How long does a temporary pharmacy filling last?
It’s designed for a few days. Book a dental visit to replace it with a proper restoration as soon as you can.
Why did my filling fall out after only a few years?
New decay, grinding, a crack, or a very large filling can shorten its lifespan. Your dentist can find the cause and choose a stronger option if needed.
Will I need a crown instead of a new filling?
If much of the tooth is missing or cracked, a crown may protect it better. Your dentist will explain the options after an exam.
Conclusion
A lost filling is common and usually fixed in a single visit.
Keep the area clean, avoid chewing on it, and book within a few days.
Prompt repair prevents decay from turning a small fix into a bigger treatment.
