Why Does My Crown Hurt? Causes of Pain Under a Dental Crown

Editorially reviewed by the Dental.me Editorial Team · Updated July 2026

You might assume that once a tooth is capped, it can no longer hurt. So it can be unsettling when a crowned tooth aches, twinges with cold, or feels sore when you bite. Here’s the reassuring part: crown pain is common, and in most cases it points to something specific and fixable. A crown covers the tooth, but underneath there is usually still a living tooth (or at least a root) with a nerve, gum tissue around it, and a bite that has to fit just right. Because of that, a crowned tooth can still send signals, and when and how it hurts often hints at why. This guide walks through the normal, the easily fixed, and the causes worth a dental visit, so you can tell the difference and know what to do next.

Why a Crowned Tooth Can Still Hurt

A dental crown is a cap that sits over a tooth to protect and restore it, but it does not turn the tooth into an inert object. Unless the tooth has already had a root canal, the nerve and pulp inside are still alive. The gum wraps snugly around the crown’s edge, and the crown has to meet the opposing teeth at exactly the right height. Any of those elements can become a source of discomfort. That’s why pain after a crown is not automatically a sign that something went wrong. Often it’s just the tooth settling in, and understanding the different causes takes a lot of the worry out of it. If you’re curious about how the tooth was prepared and capped in the first place, our overview of the dental crown procedure gives helpful context.

Normal, Temporary Sensitivity After a New Crown

A brand-new crown often feels a little sensitive or tender for the first few days to a couple of weeks. The tooth was worked on, the gum around it was handled, and everything needs time to calm down. Mild sensitivity to cold or a bit of tenderness when you press or chew is usually part of that normal settling, and it typically fades on its own.

If you’re still wearing a temporary crown while the permanent one is made, extra sensitivity is even more expected. Temporaries are made of thinner, more porous material and don’t seal the tooth as completely, so cold and pressure can reach it more easily. That kind of sensitivity is normal and generally goes away once the final crown is cemented.

Common, Easily Fixed Causes

Some crown pain comes from small mechanical issues that a dentist can correct quickly:

• A high crown (a bite that’s too tall). If the new crown sits even slightly too high, you hit it first every time your teeth come together. That constant extra pressure makes the tooth sore and can cause a sharp pain when biting. The fix is simple and fast, much like adjusting a filling that feels high. The dentist trims a tiny amount off the surface until the bite is even.
• Gum irritation. The gum around a fresh crown can be sore, puffy, or tender for a while as it heals against the new edge. This usually settles down within days.
• Trapped cement. A bit of leftover cement caught near the gumline can cause irritation until it’s cleaned away.

None of these are emergencies, but a high bite in particular is worth mentioning to your dentist rather than living with, because a persistently high crown can stress the tooth over time.

Causes That Need a Dentist’s Attention

Other sources of crown pain signal that something under or around the crown needs treatment:

• Decay at the crown’s edge. The margin where the crown meets the tooth is vulnerable. If the crown is leaking or doesn’t fit perfectly, bacteria can slip underneath and start a new cavity where you can’t see or brush it. This is one of the most common reasons an older crown starts to ache.
• A loose crown. When the cement seal breaks down, the crown can loosen, letting bacteria and temperature changes reach the tooth. You may notice sensitivity, a wobble, or a bad taste. If it comes off entirely, our guide on what to do when a dental crown falls off walks you through the next steps.
• An inflamed or infected nerve. The pulp inside a crowned tooth can still become inflamed or die, sometimes years later. When that happens, the tooth may need a root canal even though it already has a crown. Warning signs include lingering pain to hot or cold, throbbing, pain when biting, or a small pimple-like bump on the gum.
• A crack in the underlying tooth. A crowned tooth can still crack under the cap, often producing a sharp jolt when you bite and release. Our article on a cracked tooth explains how this is diagnosed and treated.
• Grinding. Clenching or grinding puts heavy, repeated force on a crown and the tooth beneath it, which can leave it sore.

What the Symptom Pattern Tells You

The way your crown hurts is one of the best clues to what’s behind it. Use these patterns as a rough guide, not a diagnosis:

• Brief cold sensitivity that quickly fades: often normal settling, especially with a new crown, and usually improves week by week.
• Pain when biting or chewing: frequently a high crown or a crack in the tooth. A high bite is an easy adjustment; a crack needs evaluation.
• Lingering throbbing, hot and cold pain that hangs on, or pain that wakes you at night: a possible nerve problem or infection. This deserves a dentist’s attention and may point toward a root canal.
• Pain with swelling, a gum boil, or a bad taste: a likely infection or abscess. See a dentist promptly.

What You Can Do in the Meantime

While you arrange a visit, a few simple measures can keep you comfortable:

• Use over-the-counter pain relief as directed on the label.
• Avoid chewing on that side, and steer clear of very hot, very cold, or hard foods.
• Rinse gently with warm salt water to soothe irritated gums.
• Keep the area clean, brushing carefully around the crown.
• Note the pattern, when it hurts, what triggers it, and how long it lasts, so you can describe it clearly to your dentist.

These steps ease symptoms, but they don’t fix the cause. Persistent or worsening crown pain should always be evaluated rather than ignored.

What the Dentist Does, and When to Go

A dentist can usually pinpoint the problem quickly. They’ll check your bite and adjust a high crown if that’s the issue, take X-rays to look for decay, infection, or a poor fit, and examine the crown for looseness or a crack. From there the fix follows the cause: a quick bite adjustment, re-cementing or replacing a loose or leaking crown, a root canal if the nerve is involved, or a new crown if the old one has failed.

Some situations call for prompt care. Treat these as red flags: facial or gum swelling, fever, severe or spreading pain, or a crown that has come loose and been swallowed or lost. Anything that feels like a rapidly worsening infection should be seen right away.

The takeaway is reassuring. Crown pain ranges from completely normal new-crown settling to a high bite, decay at the edge, a crack, or a nerve infection that needs a root canal, and the timing and pattern usually point toward the cause. New-crown sensitivity that fades over a couple of weeks is generally nothing to worry about. But if the pain lingers beyond a couple of weeks, hurts when you bite, throbs, or comes with swelling, see a dentist. They can find the exact cause and fix it, and most crown problems have a straightforward solution.

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