Why Is My Crown Hurting? 9 Causes & When to See a Dentist

A dental crown hurts because of inflammation around the tooth underneath, which can stem from a high bite, nerve irritation, decay creeping under the crown margin, a cracked root, or gum recession exposing sensitive areas — and pinpointing which cause applies to you determines whether you need a simple adjustment or more involved treatment.

The pain might show up as a sharp zing when you bite down, a dull ache that lingers for hours, or sudden sensitivity to cold drinks that never bothered you before. Whether your crown is brand new or has been in your mouth for years, the discomfort signals that something needs attention. The good news is that most crown pain has a fixable cause once you and your dentist identify it.

Why Does a New Crown Hurt After Placement?

A new crown commonly hurts for the first one to two weeks because the tooth and surrounding tissues are recovering from the preparation process, and any sensitivity to cold or pressure during this window is usually normal.

When your dentist prepares a tooth for a crown, they remove a significant amount of enamel and dentin to create space for the restoration. This process generates heat and vibration that temporarily irritates the pulp (the nerve and blood supply inside the tooth). Even with careful technique, some inflammation is unavoidable.

Your bite also changes slightly when a new crown arrives. The crown may sit a fraction of a millimeter higher than your natural tooth did, and that tiny difference creates uneven pressure when you chew. Your jaw muscles and periodontal ligament need time to adapt.

"Post-operative sensitivity after crown placement is common and typically resolves within two weeks. Persistent pain beyond this period warrants clinical evaluation." — Dr. Gordon Christensen at Clinicians Report Foundation

If pain from a new crown intensifies rather than fades, or if it wakes you up at night, call your dentist sooner rather than later. These symptoms suggest the nerve may be dying or the bite needs adjustment.

Is Your Crown Sensitive to Cold? Here's Why

Cold sensitivity in a crowned tooth happens when temperature changes reach the dentin layer or nerve through microscopic gaps, receding gums, or an incomplete seal at the crown margin.

Dentin contains thousands of tiny tubules that lead directly to the nerve. When these tubules are exposed — either because the crown margin doesn't sit perfectly flush or because your gum has pulled back — cold liquids or air rush through and trigger a sharp, fleeting pain.

Can a High Bite Make Your Crown Sensitive?

Absolutely. When your crown sits even slightly too high, it absorbs more force than the surrounding teeth during chewing. This constant micro-trauma inflames the periodontal ligament and can make the tooth hypersensitive to temperature and pressure alike. A simple bite adjustment with articulating paper and a polishing bur often resolves the issue within days.

Does Gum Recession Expose the Crown Margin?

Over time, gum tissue can recede and expose the junction where the crown meets your natural tooth root. This area lacks enamel protection, so it transmits temperature changes directly to the nerve. Using a desensitizing toothpaste containing potassium nitrate or stannous fluoride can help block those tubules and reduce sensitivity.

Also Read: Why Is My Gum Swollen? 9 Causes & How to Get Relief

What Causes Throbbing Pain Under a Crown?

Throbbing pain under a crown usually indicates infection, inflammation of the pulp, or a cracked root — all of which require professional treatment rather than home remedies.

A constant, pulsing ache differs from sharp sensitivity. It often means bacteria have invaded the space under the crown or the nerve inside the tooth is dying. You might notice the pain worsens when you lie down, because increased blood flow to your head puts more pressure on the inflamed tissue.

Could Decay Be Growing Under the Crown?

Dental crowns protect teeth, but they don't make them immune to decay. If bacteria sneak under the crown margin through a gap or a poorly sealed edge, they feed on the remaining tooth structure and produce acid. This decay can progress silently for months before pain announces its presence.

"Secondary caries at crown margins remain a leading cause of crown failure. Annual radiographic evaluation helps detect early lesions before they cause irreversible pulp damage." — American Dental Association at ADA.org

Is the Nerve Dying Inside the Tooth?

Sometimes a tooth that seemed healthy when it received a crown later develops pulpitis (nerve inflammation) or pulp necrosis (nerve death). The trauma from crown preparation, a history of deep fillings, or a crack that wasn't visible at placement can all push the pulp past its ability to heal. Root canal therapy removes the dying tissue and saves the crowned tooth.

Why Is My Back Tooth Hurting After Getting a Crown?

Back teeth experience more biting force than front teeth, so crowned molars and premolars are more prone to bite-related pain, cracks, and stress on the periodontal ligament.

Molars handle the grinding and crushing work of chewing. If a crown on a back tooth sits even slightly high, every meal compounds the irritation. Additionally, the complex anatomy of molar roots means cracks can hide in spots that don't show up on standard X-rays.

Do Clenching and Grinding Damage Crowned Back Teeth?

Bruxism (teeth grinding) exerts forces up to 250 pounds per square inch on your teeth while you sleep. A crowned molar absorbs that force night after night, which can fracture the underlying tooth, loosen the crown's cement bond, or inflame the periodontal ligament. If you wake with jaw soreness or your partner hears you grinding, a night guard protects your investment.

Also Read: Why Is My Jaw Popping? 6 Causes & How to Fix It

Can a Wisdom Tooth Cause Crown Pain?

An impacted or partially erupted wisdom tooth can press against adjacent molars, creating referred pain that feels like it's coming from a nearby crown.

Wisdom teeth often erupt at odd angles, pushing into second molars. The pressure can irritate the periodontal ligament of the crowned tooth, making it ache even though the crown itself is fine. Your dentist can determine whether the wisdom tooth is the true source with a panoramic X-ray.

If your bottom teeth on one side hurt and you still have wisdom teeth, have them evaluated. Removing a problematic wisdom tooth often resolves mysterious pain in neighboring crowned teeth.

What About Front Tooth Crown Pain?

Front tooth crowns face less biting force but are vulnerable to trauma, edge-to-edge contact during biting, and aesthetic stress from thin porcelain margins.

A crowned front tooth might hurt if you accidentally bite into something hard (think: a fork or an unexpected olive pit) or if your bite brings your upper and lower front teeth into edge-to-edge contact. Thin porcelain at the gum line can also chip or fracture, exposing sensitive dentin.

Front teeth also tend to have longer, narrower roots than molars, which means less surface area to absorb stress. If you grind your teeth or have a habit of chewing pens, your front crown experiences forces it wasn't designed to handle.

Diagnosing Crown Pain: What to Expect at the Dentist

Your dentist will use a combination of visual inspection, X-rays, bite analysis, and temperature tests to identify why your crown hurts.

Here's what a typical diagnostic appointment involves:

If standard tests don't reveal the cause, your dentist may recommend a cone beam CT scan for a three-dimensional view of the root and surrounding bone.

How to Relieve Crown Pain at Home in 2026

Home remedies can reduce discomfort temporarily, but they don't fix the underlying cause — use them as a bridge until you can see your dentist.

• Rinse with warm salt water (half a teaspoon of salt in eight ounces of water) to reduce bacterial load and soothe inflamed gums.
• Apply a desensitizing toothpaste directly to the crown and leave it on for a few minutes before rinsing.
• Take over-the-counter ibuprofen to reduce inflammation and pain. Follow package directions.
• Avoid chewing on the painful side until you've had the crown evaluated.
• Skip extremely hot, cold, or acidic foods and drinks that might intensify sensitivity.

These steps buy you time, but they won't stop decay, heal a cracked root, or fix a dying nerve. If pain persists beyond a few days or worsens, see your dentist.

When Crown Pain Means You Need a Root Canal

If your crowned tooth throbs constantly, keeps you awake at night, or causes facial swelling, the nerve may be infected or dead — and a root canal is the most likely solution.

A root canal removes the pulp tissue, disinfects the canal system, and seals the space with a biocompatible material. The crown usually stays in place during and after the procedure, though your dentist will drill a small access hole through it to reach the canals.

Signs that point toward a root canal:

• Pain that lingers for more than 30 seconds after a cold stimulus
• Spontaneous pain without any trigger
• Swelling or a pimple-like bump on the gum near the tooth
• Discoloration of the crowned tooth
• Pain when pressing on the gum above the root tip

Root canal therapy has a success rate above 95 percent when performed on properly selected teeth. After treatment, the tooth remains functional for many years.

When to Replace the Crown Entirely

A crown needs replacement when it's cracked, the margin leaks, decay has undermined the seal, or the fit no longer protects the underlying tooth.

Crowns don't last forever. Porcelain can chip, metal can corrode, and cement can wash out over time. If your dentist sees a gap at the margin, recurrent decay, or a structural crack, a new crown is often the best path forward.

Replacing a crown is more predictable than repeatedly patching a failing one. Modern materials like zirconia and lithium disilicate offer excellent strength and aesthetics.

Also Read: Why Is My Smile Crooked? 8 Causes & How to Fix It

In Short

Crown pain signals that something — a high bite, nerve irritation, decay, a crack, or gum recession — needs attention. New crowns often hurt for a week or two as tissues heal, but persistent or worsening pain requires a dental visit. Cold sensitivity usually traces back to exposed dentin or an imperfect seal, while throbbing pain suggests infection or nerve damage. Home remedies offer temporary relief, but only your dentist can diagnose and fix the root cause.

What You Also May Want To Know

Why Is My Dental Crown Sensitive All of a Sudden?

Sudden sensitivity in a crown that felt fine for months or years typically means something has changed: your gum has receded and exposed the margin, the cement seal has weakened, decay has started under the crown, or you've begun grinding your teeth more intensely. A dental exam with X-rays can pinpoint which factor is responsible so you can address it before the problem escalates.

Why Is My New Crown Sensitive to Cold?

New crowns are often sensitive to cold because the underlying dentin is still recovering from the preparation process. The nerve inside the tooth needs time to calm down after the trauma of drilling and impression-taking. This sensitivity usually fades within two weeks. If it doesn't, your dentist may need to adjust the bite or check for a marginal gap.

Why Is My Bottom Teeth Hurting Near a Crown?

Pain in your bottom teeth near a crown can stem from referred pain from the crowned tooth, an emerging or impacted wisdom tooth pressing on neighbors, or a separate issue like gum disease or a cavity in an adjacent tooth. Your dentist can isolate the source by testing each tooth individually and reviewing X-rays of the entire arch.

Why Is My Front Tooth Hurting After a Crown?

Front tooth crowns can hurt if the bite brings them into edge-to-edge contact, if you've bitten something hard, or if the thin porcelain margin has chipped. Front teeth also have smaller roots with less support, so they're more susceptible to trauma. A bite adjustment or repair of the crown usually resolves the pain.

Can a Crowned Tooth Still Get a Cavity?

Yes. The crown covers the visible portion of the tooth, but the junction between the crown and the root remains vulnerable. Bacteria can infiltrate a poorly sealed margin and cause decay on the root surface or under the crown. Regular dental checkups and daily flossing around the crown help prevent this problem.

Reviewed and Updated on May 1, 2026 by George Wright