How to Handle a Lost Filling or Crown Until Your Appointment

By Dr. Boris Zusin · Published August 8, 2026

A filling or crown coming loose is unsettling, especially if it happens mid-meal, but it's rarely a true emergency. Here's how to protect the tooth until we can get you in.

Is This an Emergency?

Most of the time, a lost filling or crown is not an emergency — it's an "as soon as reasonably possible" situation, ideally within a few days. It becomes more urgent if you're in real pain, have sharp sensitivity to hot, cold, or sweets, or the exposed tooth has a jagged edge cutting your tongue or cheek.

Lost a Crown? Save It If You Have It

If a crown comes off in one piece, rinse it off and keep it in a small container — that's the one restoration that's genuinely worth saving. An intact crown can often be cleaned and re-cemented at your visit rather than needing a full remake, which saves you real time and cost. The tooth underneath is usually filed down to a much smaller stump to make room for the crown, so it's more sensitive and more vulnerable without it — try to avoid chewing on that side until we can get the crown back on.

Lost a Filling? There's Usually Nothing to Save

A filling is different: it's bonded directly into the tooth rather than sitting over it like a shell, so when one comes out it typically crumbles or is simply gone — there's rarely an intact piece worth bringing in. What's left is an open area in the tooth where decay or an old filling used to be, which is more exposed to temperature, pressure, and food than a missing crown. The priority is keeping that area clean and protected (see below) until we can place a new filling.

Protect the Tooth Temporarily

Keep the area clean with a gentle rinse, and avoid chewing on that side. If there's a sharp edge, a dab of over-the-counter dental wax or a small piece of sugar-free gum pressed over the area (not into it) can protect your tongue and cheek until your appointment. Avoid very hot, cold, or sticky foods on that tooth in the meantime.

What Not to Do

Skip the superglue and household adhesives you might see suggested online — they're not safe for use in the mouth and can make the tooth harder to treat properly. Denture adhesive is a reasonable short-term option to temporarily reseat a crown if you have some on hand, but it's not a substitute for being seen.

Call us the same day you notice a lost filling or crown so we can get you in quickly — the sooner the tooth is protected properly, the less likely you'll run into complications.