Permanent Filling Fell Out: What to Do and When to Call

Is a Lost Permanent Filling an Emergency?

In most cases, no. If the tooth is quiet, the hole is small, and nothing hurts when you bite, this is a normal appointment in the next few days rather than a phone call at midnight. Plenty of people lose a filling on a Tuesday and are fine until Thursday.

The difference from a temporary filling matters, though. A temporary is designed to come out; that is its job description. A permanent one is not, so its failure is a symptom rather than an event. Something changed in the tooth around it, and that is the part worth checking, not the missing silver or white material itself. If you are wondering about the other case, we cover a temporary filling falling out separately.

Go straight to a hospital emergency room, not to us, if you have swelling spreading across your face or into your neck, difficulty swallowing or breathing, or a fever with facial swelling. That is a spreading infection, and it is past the point where a dental chair is the right room.

Why Permanent Fillings Fall Out

Fillings do not last forever, and the reason one failed usually tells us what the tooth needs next. The common causes:

• New decay at the margin. The seam between filling and tooth is the weak point. Decay works in along it, undermines the filling, and eventually the filling has nothing solid to sit on. This is the most common reason by a wide margin.
• A crack in the remaining tooth. A large filling leaves thin walls of tooth around it. Those walls flex every time you chew, and eventually one gives.
• The filling was simply large. A filling that replaces most of a molar is doing a job a filling was never really designed for. Those are the ones that come out.
• Grinding or clenching. Night-time force is far higher than chewing force, and it lands on the same spot repeatedly.
• Age. Old amalgam and composite fillings wear, shrink slightly, and leak. A filling placed twenty years ago has done well.

Sticky toffee usually gets the blame, and it is often what finally pulls the filling free. It is rarely the actual cause. Something had already loosened for the toffee to win.

What to Do in the First Day or Two

The aim is to keep the exposed tooth clean and stop it getting more damaged before you are seen.

• Rinse gently with warm salt water after meals to clear food out of the cavity.
• Chew on the other side. The tooth is weaker without its filling, and biting hard on it is how a small problem becomes a broken cusp.
• Avoid very hot, very cold, and sweet things, which are what set off an exposed surface.
• Leave the hole alone. Do not probe it with a toothpick or your fingernail to see how deep it goes.
• Take a normal painkiller if you need one. Ibuprofen or paracetamol, as directed on the packet, is fine for a mild ache.
• Pharmacy temporary filling putty is acceptable as a stopgap. It covers a sharp edge or a sensitive hole for a day or two. It is first aid, not a repair.

Do not use superglue, and do not try to stick the old filling back in. Household adhesive is not made for the inside of a mouth, and it makes the tooth harder to clean out properly when you do arrive. If the filling came out in one piece you can keep it, though we almost never need it. The tooth needs a new filling, not that one back.

When It Is More Than Just a Filling

Waiting to see whether it settles by itself is usually the more expensive choice. A tooth that has lost a filling is open, and an open tooth does not improve while you think about it. The decay that undermined the filling is still there and still working.

Some symptoms mean the problem has already gone deeper than a straightforward refill:

• Pain when you bite down, especially a sharp jolt on release, which points at a crack. Our guide to tooth pain when biting goes into what that means.
• Cold sensitivity that lingers for more than a few seconds after the cold is gone, rather than fading straight away.
• A dull throb that wakes you at night or comes on by itself with nothing touching the tooth.
• A bad taste, a gum boil, or swelling near the tooth.

Those suggest the nerve inside is inflamed or infected, and the tooth may need a root canal rather than another filling. Where a filling stops being enough and a crown makes more sense is covered in crown or filling, and the deeper version of the same question in deep filling or root canal. If part of the tooth broke away with the filling, cracked tooth is the more relevant read.

Losing a Filling on a Thursday Night or a Friday in Beit Shemesh

Timing changes what to do about it here. We are open Sunday to Thursday, 8:00 AM to 8:00 PM, and Friday 8:00 AM to 2:00 PM, closed Saturday. A filling that comes out on Sunday evening is easy: call in the morning and it is dealt with the same week.

A filling that comes out late on Thursday, or on Friday itself, is the awkward one. If the tooth is quiet, it will keep over Shabbat with salt-water rinses and chewing on the other side, and Sunday morning is soon enough. If it is aching, call on Friday morning rather than Friday afternoon, because a two-hour window before the clinic closes at 2:00 PM is a lot easier to fit you into than the last twenty minutes of it. Emergency treatment is available outside those hours when a tooth genuinely cannot wait, so if the pain is real, say so rather than deciding for yourself that it can hold until Sunday.

One practical thing about being in Beit Shemesh, if English is your first language: you can describe the symptom precisely instead of approximately. Dr. Joel trained at Case Western Reserve University in the US and treats in both Hebrew and English, and "it aches for a minute after cold water" is genuinely more useful to us than a rough translation of it.

What Happens at the Appointment

Replacing a lost permanent filling is usually straightforward. We clean the decay out of the cavity, check the walls of the tooth for cracks, and take an x-ray if we need to see how close the old filling came to the nerve. Then we rebuild the tooth.

What goes back in depends on what is left. A tooth with solid walls gets a new filling and you are done in one visit. A tooth that has lost most of its structure is better served by a crown, because another large filling in a weakened molar will fail the same way the last one did. If the nerve is already involved, the tooth needs a root canal first and the rebuild afterwards. We will tell you which of those it is and why, before starting anything. If this is your first visit to us, what happens at a first emergency visit walks through it, and what a dental x-ray shows explains what we are looking for on the image.

If your permanent filling has fallen out, call or WhatsApp 055-985-8845 and we will get the tooth sealed again. We are at Harav Kook 28/1 in Beit Shemesh, open Sunday to Thursday 8:00 AM to 8:00 PM and Friday 8:00 AM to 2:00 PM, with emergency treatment outside those hours. Tell us if the tooth is painful or sensitive to cold when you call and we will see you sooner. Our emergency dentist in Beit Shemesh page explains how we handle urgent problems like this one.

For independent guidance, the ADA's MouthHealthy covers how dental fillings work and how tooth decay develops, and the American Association of Endodontists explains the different kinds of cracked teeth if part of the tooth came away with the filling.