Crown Fell Off and It Smells Bad: What It Means and What to Do

Why a Crown Smells When It Comes Off

A crown is a cap that seals the tooth underneath. When the seal at the edge fails, even slightly, saliva, food and bacteria slip in. Nothing there can be brushed, so it sits and breaks down for months. The crown may then loosen because the tooth under it has decayed away, and the smell is what that has been producing.

The usual causes:

• Decay under the crown. The most common. The tooth rots under cover, often without pain.
• An infected tooth. If the nerve has died, bacteria can leak out of the tooth and give off the same smell. See infection in a crowned tooth.
• Old cement washing out. The glue breaks down, a gap opens, and food packs in.

Most people who come to us with this say the crown felt a bit loose for a while and they hoped it would sort itself out. That is a very normal thing to have done.

What to Do Tonight

• Keep the crown. Rinse it and put it in a clean container.
• Rinse the mouth gently with warm salt water, a few times a day.
• Brush the area softly, including the exposed tooth, and avoid chewing on that side.
• If it hurts, use an over-the-counter pain reliever exactly as the label says and only if you can safely take it.

Do not glue the crown back with household or super glue. It traps the decay inside and can make the repair harder. For more on what is safe, see what to do when a crown falls off.

How Urgent Is It?

A smell with no pain and no swelling needs an appointment within a day or two. A smell with a throbbing tooth, a bad taste, or a pimple-like bump on the gum means infection is likelier, and you should be seen the same day. If the tooth also looks dark, a crown that fell off over a black tooth explains why, and a bad taste from a tooth covers the taste side.

When to Go to the Hospital Instead of Us

Swelling that spreads across the face, toward the eye or down the neck, trouble breathing or swallowing, or a fever with chills means the infection may be moving beyond the tooth. Go to the nearest emergency room. For the decision between the two, emergency room or dentist for tooth pain lays it out.

What We Do With the Tooth

First we clean out the decay and see how much healthy tooth is left. Three outcomes are common:

• Enough tooth remains and the nerve is healthy: a new crown, sometimes after a build-up.
• The nerve is infected or dead: a root canal first, then a crown. See our root canal treatment in Beit Shemesh.
• Too little tooth is left to hold a crown: the tooth may need to come out. We will say so plainly if that is the case.

We cannot tell which one it is without looking and, usually, taking an X-ray. The smell is a clue, not a diagnosis.

Crowns That Come Off at Awkward Times in Beit Shemesh

Crowns tend to come off over a meal, on a Friday afternoon, or the night before an event. Our clinic is at Harav Kook 28/1, Beit Shemesh, open Sunday to Thursday 08:00 to 20:00 and Friday 09:00 to 17:00. Shabbat is reserved for genuine emergencies only, and we also treat emergencies outside those hours. Dr. Joel treats in Hebrew and English, so you can describe exactly what you taste and smell.

See our emergency dentist in Beit Shemesh page, or dental crowns in Beit Shemesh for the replacement itself.

When It Can Wait

If the crown is off, there is no pain, no swelling and no taste, and it is Shabbat or the middle of the night, it can wait for the morning. Keep the area clean and book the first slot you can. What you should not do is leave it for weeks: the exposed tooth keeps decaying and the repair gets bigger.

For independent guidance, the ADA's MouthHealthy has a guide to dental emergencies, and the American Association of Endodontists explains root canal treatment.

Call or message us on WhatsApp at 055-985-8845. Urgent Dental Care, Harav Kook 28/1, Beit Shemesh.