Why a Crowned Tooth Might Still Hurt: Causes and What to Do

Getting a dental crown should feel like the finish line. You've done the hard part - the prep work, the impressions, the temporary crown and now the permanent one is in place. So when pain lingers after all of that, it's understandable to feel frustrated, confused, or even a little worried.

The good news is that post-crown discomfort is more common than most people realize, and it isn't always a sign that something went wrong. But it also isn't something to wait out indefinitely. Understanding what's behind the pain can help you figure out whether you need a simple adjustment or a closer look.

First: Some Sensitivity Is Normal

Right after a crown is placed, mild sensitivity to temperature or pressure is expected. The tooth and surrounding tissue just went through a significant procedure, and they need time to settle. For most people, this fades within a few days to about two weeks.

When the pain doesn't follow that timeline, or when it gets worse instead of better, that's when it's worth paying attention.

Common Reasons a Crowned Tooth Still Hurts

The bite is off

This is one of the most frequent culprits, and the easiest to fix. When a crown sits even slightly too high, it changes how your upper and lower teeth meet. Over time, that small difference creates significant pressure on the crowned tooth every time you chew or clench. You might feel a sharp sensation when biting down, or a dull ache that builds through the day.

A bite adjustment is a quick, painless in-office fix your dentist removes a tiny amount of material from the crown's surface until contact feels even again. Many patients notice relief almost immediately.

The nerve is irritated

During crown preparation, your dentist files down the natural tooth to make room for the crown. This process can disturb the nerve inside, even when everything is done correctly. The nerve may respond with heightened sensitivity to hot, cold, or pressure sometimes for weeks after placement.

In most cases, nerve irritation settles on its own. If it doesn't, or if the pain is sharp and prolonged rather than fleeting, it may indicate the pulp has become inflamed beyond what will resolve without treatment, sometimes requiring a root canal.

There's an underlying infection

If the tooth required a crown because of significant decay or damage, there's a chance bacteria had already reached the inner pulp before the crown was placed. In these cases, the crown addresses the structural problem but doesn't resolve the infection. Pain, throbbing, swelling, or sensitivity to pressure can all signal that something is happening below the surface.

An X-ray is usually enough to confirm whether infection is involved. If it is, root canal treatment followed by re-cementing or replacing the crown is typically the path forward.

Micro-leakage around the crown

Even a well-fitted crown can develop microscopic gaps at the margin, the point where the crown meets the gumline. When this happens, bacteria and debris can reach the tooth structure underneath, leading to gum inflammation, secondary decay, and sensitivity that seems to appear out of nowhere, sometimes months after the crown was placed. Micro-leakage isn't always visible on an X-ray and can be tricky to diagnose, but it's worth raising with your dentist if your sensitivity is persistent and doesn't fit any other explanation.

Bruxism

If you grind or clench your teeth, especially at night. A new crown can absorb significant force it wasn't designed to handle. Bruxism puts pressure on the crowned tooth and the surrounding jaw muscles in a way that mimics bite misalignment but won't resolve with a simple adjustment. If grinding is suspected, a night guard is usually recommended alongside any other treatment.

Gum tissue irritation or fracture beneath the crown

In some cases, the gum tissue around the crown margin becomes irritated or inflamed, creating localized sensitivity that feels like it's coming from the tooth itself. Less commonly, the underlying tooth structure may have a crack or fracture that went undetected before the crown was placed, and that becomes a source of pain once it's under the pressure of normal use.

What to Do If Your Crown Still Hurts

Don't assume the pain will resolve on its own, and don't assume the worst either. Start by noting when the pain occurs, is it when you bite down, when you drink something cold, or is it a constant ache? That pattern gives your dentist useful diagnostic information.

If it's been more than two weeks since your crown was placed and discomfort hasn't improved or if the pain is severe, worsening, or accompanied by swelling, schedule a follow-up. Pain after a crown is almost always addressable, but earlier is easier than later.

In the meantime, keeping your teeth clean matters more than ever. Bacteria along the gumline can worsen sensitivity and accelerate any existing micro-leakage, consistent brushing along the margin where crown meets gum is something many people overlook. The Feno Smartbrush's 18,000-bristle design and 20-second cleaning cycle make it easier to clean that vulnerable zone thoroughly, which can be especially helpful while you're managing post-crown sensitivity.

A crowned tooth that keeps hurting isn't something to dismiss, but it's also not something to panic about. Bite misalignment, nerve irritation, infection, micro-leakage, bruxism, and gum irritation are all identifiable, treatable causes and your dentist has seen all of them. The key is getting an evaluation before a manageable issue becomes a more complicated one.