What Should You Do If a Dental Filling Falls Out?

If a filling falls out, take the piece out of your mouth so you do not swallow or inhale it, rinse gently with warm salt water, and chew on the other side. Keep the area clean and call a dental office to have the tooth repaired within a few days, or the same day if it is painful, swollen or has a sharp broken edge. A lost filling is usually urgent rather than an emergency, but the exposed tooth is weaker and more likely to decay or break the longer it stays open.

Losing a filling can be unsettling, especially if you feel a hard piece in your mouth while eating. This guide explains what to do in the first few minutes, what it means when a tooth filling falls out with no pain, how to protect the tooth at home, and what your dentist will do to repair it.

What should you do right away if a filling falls out?

1. Remove the piece from your mouth

If you feel a hard fragment, take it out so it does not get swallowed or go down the wrong way. You do not need to keep it, since old fillings are not usually reused, but you can bring it to your appointment if you are unsure whether it is a filling or a piece of tooth.

2. Rinse gently

Rinse with warm water, or warm salt water (about half a teaspoon of salt in a cup of warm water). This clears away food and debris from the open space.

3. Look and feel carefully

Check the tooth in a mirror if you can. Note whether there is a sharp edge, whether part of the tooth seems to be missing, and whether the gum around it looks swollen. Avoid poking the hole with your finger or tools.

4. Protect the area

Chew on the other side, and avoid very hot, cold, sweet or hard foods for now. If a sharp edge is catching your tongue or cheek, a small piece of sugar-free gum or orthodontic wax pressed over it can help until you are seen.

5. Call a dental office

Describe what happened, whether the tooth hurts, and whether there is any swelling. This helps the team decide how soon you should come in. At York Street Dental Centre, our emergency dentistry page explains how urgent visits are handled.

My tooth filling fell out but there is no pain. Is that okay?

It is common for a missing filling not to hurt, and many people are surprised by it. There are a few reasons why:

• The cavity is shallow. If the filling was small, there may still be a good layer of tooth between the hole and the nerve.
• The tooth has had a root canal. A root-canal-treated tooth has no living nerve, so it will not feel temperature or sweets.
• The nerve is already damaged. Sometimes a tooth has lost its nerve quietly over time, which can mean infection is developing without pain.
• The filling came out slowly. If the edges had been leaking for a while, the tooth may have had time to settle.

Whatever the reason, no pain does not mean the tooth can wait indefinitely. The open space collects food and bacteria, the thin walls around it can chip or crack, and decay can progress faster in an unprotected cavity. A painless tooth that is repaired within a few days usually needs a simpler fix than one left for weeks or months. If the filling fell out with no pain, book a visit within the next few days rather than waiting for symptoms.

What if the tooth hurts after the filling came out?

Some sensitivity is common. The filling was covering dentin, the layer under the enamel, which has tiny channels leading toward the nerve. Cold air, drinks and sweets can now reach it directly.

Pain that is brief and only happens with a trigger often settles once the tooth is restored. Pain that is more concerning includes:

• aching that lingers after hot or cold,
• throbbing that starts on its own,
• pain that wakes you at night, or
• pain when you bite down.

These can be signs the nerve is inflamed, which may change the treatment you need. See signs you may need root canal treatment for more on these patterns.

Is a lost filling a dental emergency?

Usually it is urgent, not an emergency. The table below is a general guide.

Situation	How soon to get care
Filling fell out, no pain, no sharp edges	Book a visit within a few days
Mild sensitivity to cold or sweets	Book a visit within a few days
Sharp edge cutting your tongue or cheek	Call the office the same day or next day
Part of the tooth broke off with the filling	Call the office the same day or next day
Strong, lingering or throbbing pain	Call the office the same day
Swelling of the gum or face, or fever	Call the office the same day
Swelling near the eye, under the jaw or in the neck	Go to the emergency department
Trouble breathing or swallowing	Call 911

Swelling means infection may be spreading, which changes the situation entirely. Our guide on facial swelling and tooth pain explains when to go to hospital, and what counts as a dental emergency covers other urgent situations.

How do you protect the tooth until your appointment?

A few simple habits can keep the tooth comfortable and reduce the chance of further damage while you wait.

• Keep it clean. Brush the area gently twice a day with fluoride toothpaste, and rinse after meals to clear food from the hole.
• Chew on the other side. The walls around a lost filling are often thin and can break under pressure.
• Choose soft foods. Avoid nuts, hard candy, ice, popcorn, crusty bread and sticky foods such as caramel or toffee.
• Avoid temperature extremes and sugar. These are the most common triggers for sensitivity.
• Use a sensitivity toothpaste if the tooth is sensitive. Some people find dabbing a little on the area helps.
• Take over-the-counter pain relief as directed on the package, if you need it and it is safe for you.

Things not to do

• Do not use household glue, superglue or any adhesive not made for the mouth. These can harm the tooth and gums and make a proper repair harder.
• Do not put aspirin directly on the tooth or gum. It can burn the tissue.
• Do not try to push the old filling back into place.
• Do not scrape at the hole with tools.

Can you use temporary filling material from a pharmacy?

Many pharmacies sell temporary dental filling material. It can cover the hole for a short time, reduce sensitivity and keep food out. It is a stopgap, not a repair, and it does not treat whatever caused the filling to fail.

How to use it

1. Read the package instructions first.
2. Brush and rinse the tooth, then dry it as well as you can with a clean piece of gauze or tissue.
3. Roll a small amount of material between clean fingers.
4. Press it gently into the hole and smooth it so it is level with the tooth.
5. Bite down gently to check it is not too high, and remove any excess.
6. Avoid chewing on it for the time recommended on the package.

If the material makes your bite feel high, causes pain, or you are not sure the hole is fully clean, it is fine to skip it and simply keep the area clean until your visit. Temporary material wears away, so it is not a reason to delay booking.

What if you swallowed or inhaled the filling?

Swallowing a small piece of filling is very common and usually harmless. It will generally pass on its own.

Inhaling it is different. If you started coughing hard, feel short of breath, or have chest discomfort or wheezing after losing a filling, seek medical care promptly. Call 911 if you are having trouble breathing.

Why do fillings fall out?

A filling usually comes out for a reason, and finding that reason is part of the repair.

• New decay at the edge. Decay can form where the filling meets the tooth, weakening the bond. This is one of the most common causes.
• Wear over time. Filling materials gradually wear, and the seal around them can weaken.
• Grinding or clenching. Heavy forces, often at night, can loosen or crack fillings.
• Biting something hard. Ice, hard candy, bones or popcorn kernels can dislodge a filling or crack the tooth around it.
• Sticky foods. Caramel and toffee can pull out a filling that is already loose.
• A crack in the tooth. If the tooth around the filling cracks, the filling may break away with it.
• A large filling in a weakened tooth. Big fillings leave less natural tooth to hold them.

Is it a filling or a piece of tooth?

It can be hard to tell. Silver-coloured fragments are usually old amalgam filling. Tooth-coloured pieces may be a white filling or part of the tooth itself. If the piece is jagged, the hole seems unusually large, or you can feel a sharp edge, part of the tooth may have broken off. That can change the repair, so mention it when you call.

What if it was a temporary filling?

Temporary fillings are designed to be short-term, for example between root canal appointments or while waiting for a crown. They are softer than permanent fillings, and it is not unusual for part of one to wear away or come loose. If a temporary filling comes out, call the office that placed it. The tooth underneath may be more vulnerable than a tooth with a lost permanent filling, especially during root canal treatment, so it is worth having it replaced promptly.

What happens at your appointment?

Your visit usually follows these steps:

1. Questions about what happened and whether you have pain or sensitivity.
2. An examination of the tooth, the surrounding teeth and your gums.
3. An X-ray, in many cases, to check for decay and look at the nerve and root.
4. An explanation of your options, with estimated fees, before any treatment begins.
5. The repair, once you have agreed on a plan. Your dentist will explain how many visits it is likely to take.

Possible repairs

• A new filling. If plenty of healthy tooth remains, the dentist removes any decay, cleans the cavity and places a new dental filling.
• A crown. If the cavity is large or the tooth is cracked, a crown may protect it better than another large filling. Our article on dental crown vs filling explains how dentists decide.
• Root canal treatment. If decay or a crack has reached the nerve, the tooth may need a root canal before it is restored. Root canal vs dental filling covers where that line falls.
• Extraction. Rarely, if the tooth is too damaged to restore, removal may be discussed along with options to replace it.

If a crown came off rather than a filling, the steps are different. See what to do if a dental crown falls off.

What happens if you wait too long?

An open cavity is harder to keep clean and easier to damage. Over weeks or months:

• decay can spread deeper into the tooth,
• the thin walls around the hole can crack or break,
• the nerve can become inflamed or infected, and
• a simple filling can turn into a crown, a root canal or even an extraction.

This is why a few days is a sensible window, even when the tooth does not hurt.

What affects the cost of repairing a lost filling?

We do not quote fees without examining the tooth, because the repair depends on what is found. Cost factors include:

• the size of the cavity and how many surfaces of the tooth are involved,
• the filling material used,
• whether there is new decay to remove, and
• whether a crown or root canal is needed instead of a filling.

Many private dental plans cover part of the cost of fillings, and the office can send a predetermination for larger treatment such as a crown. If you have Canadian Dental Care Plan (CDCP) coverage, ask our team what applies to your repair, since coverage details can change.

How can you help your fillings last longer?

• Brush twice a day with fluoride toothpaste and clean between your teeth daily.
• Limit sugary snacks and drinks, especially sipping or snacking throughout the day.
• Avoid chewing ice, hard candy and other hard objects.
• If you grind or clench your teeth, ask your dentist whether a nightguard may help protect your teeth and fillings.
• Keep regular checkups, so worn or leaking fillings can be found and replaced before they fall out.

Getting a lost filling repaired in Cornwall

A lost filling is a good example of a problem that is simplest to fix early. York Street Dental Centre is a family dental office at 118 York Street in Cornwall, convenient for patients in downtown Cornwall, Eamer’s Corners and Riverdale, and for those coming from Glen Walter, Lakeview Heights and St. Andrews West. We are open Monday to Friday and welcome new patients, so you do not need to already be on our patient list to call.

When you come in, we will check the tooth, explain what caused the filling to come out, and walk you through the repair options and estimated fees before starting.

Call us about a lost filling

If your filling fell out, with or without pain, call York Street Dental Centre at (613) 932-1620 to arrange a visit, or request an appointment online if the tooth is comfortable and you can wait a few days. You can also read more about dental fillings at our office.