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What Causes Dental Crowns to Break and How to Fix Them

Dental crowns are built to last—but they’re not indestructible. One day, you’re chewing something that doesn’t even seem that tough, and crack—your crown breaks. It’s frustrating, inconvenient, and sometimes even painful. But before panic sets in, let’s take a closer look at why it happens and what you can do to fix it without losing your mind (or your tooth).

Understanding How Crowns Work

Crowns are protective caps that fit over damaged or weakened teeth. They're made from materials like porcelain, ceramic, metal, resin, or a combination of these. The material choice often depends on the tooth’s location, your bite, and cosmetic preferences. While they’re designed to handle normal biting and chewing forces, certain habits or issues can make them more prone to breaking.

1. The Usual Suspects Behind Broken Crowns

Several culprits could be at play when a crown breaks. Some are avoidable, and others are just part of life. Here’s a breakdown of the most common causes:

a. Biting Hard Foods or Objects

Popcorn kernels, hard candies, ice cubes—these might seem harmless, but they’re a crown’s worst enemies. Even if your natural teeth can handle them, crowns can chip or crack under sudden pressure.

b. Teeth Grinding (Bruxism)

This often happens at night and usually without you knowing. Constant grinding or clenching creates chronic pressure, which can slowly weaken the crown’s structure over time.

c. Poor Fit or Design

Sometimes, the issue starts at the dental office. If a crown wasn’t fitted perfectly, or if the bite wasn’t adjusted correctly, uneven force distribution could lead to a fracture.

d. Accidents or Injuries

Slipping on the ice, taking an elbow in a basketball game, or even getting hit with a door can crack or dislodge a crown. Trauma to the face, even if minor, is a known risk.

e. Material Fatigue Over Time

Crowns aren’t forever. On average, they last between 5 to 15 years. Everyday wear and tear can gradually wear down the material, making it more vulnerable to breaks.

2. Signs Your Crown Might Be in Trouble

Not all dental crown issues show up with a dramatic break. Some early warning signs can help you catch the problem before it escalates.

  • Sensitivity to hot or cold foods
  • Pain when biting down
  • Visible cracks or chips
  • A feeling that the crown is loose
  • Gum irritation near the crown

If you notice any of these, don’t wait—get it checked before a small issue becomes a bigger one.

3. What To Do If Your Crown Breaks

So the crown broke—now what? Here's how to handle the situation, step by step.

Step 1: Retrieve the Crown (If You Can)

If it completely falls out and you can find it, store it in a clean container. In some cases, your dentist might be able to reattach it.

Step 2: Avoid Using That Side of Your Mouth

Don’t chew on the damaged side, and avoid sticky or hard foods until you see your dentist.

Step 3: Call Your Dentist Right Away

Even if there’s no pain, don’t delay. A broken crown can leave the underlying tooth exposed to bacteria, which may lead to infection or decay.

Step 4: Use Temporary Dental Cement (If Advised)

If the crown has come off entirely and you can’t get to the dentist right away, pharmacies often sell temporary dental repair kits. But this is a short-term fix—never a substitute for professional care.

4. Repair vs. Replacement: What’s the Right Move?

Once you’re at the dentist’s office, they’ll assess whether the dental crown can be salvaged or if it needs to be replaced.

Repairable Crowns

Small chips or cracks might be fixed with composite resin, especially if the damage is cosmetic and the structure remains intact.

When Replacement is Necessary

If the crown is split, heavily fractured, or if the underlying tooth is compromised, your dentist will likely recommend a new crown. They may also need to treat the tooth beneath, particularly if it’s infected or decayed.

5. How Long Does the Fix Take?

Minor Repairs: These can sometimes be done in one visit, especially if no lab work is required.

New Crowns: Typically, it takes two appointments—one for the mold and temporary crown, and another to place the permanent one. Some modern offices even offer same-day crowns using 3D technology.

6. Preventing Future Breaks: Tips That Actually Work

You can’t always control everything, but a few good habits go a long way in protecting your dental crown.

Avoid Hard or Sticky Foods

Chew with caution. Even if your crown is metal or zirconia, it’s not bulletproof.

Wear a Night Guard

If you grind your teeth, a custom-fitted night guard can protect both your natural teeth and any dental work.

Practice Good Oral Hygiene

Brush twice a day, floss daily, and visit your dentist regularly. Just because a tooth is crowned doesn’t mean it’s immune to decay or gum issues.

Don’t Use Your Teeth as Tools

No opening bottles, tearing packages, or cracking nuts with your teeth—crowns or not.

7. Cost of Crown Repair or Replacement

The price varies depending on the material, the location of the tooth, and the complexity of the damage. Here's a ballpark:

  • Minor Repairs: $100 to $300
  • New Crown: $800 to $2,500

If you have dental insurance, a portion of this may be covered, especially if the crown is several years old.

8. When a Crown Breaks Repeatedly

If you’ve had a crown break more than once, it’s time to ask the deeper questions. Are you grinding your teeth? Is your bite off? Was the crown material the best choice for your needs?

Chronic issues might require a full bite analysis, switching materials, or even orthodontic intervention to realign your teeth.

9. The Bottom Line

Crowns are reliable, but like everything else, they have limits. Whether it’s biting into something too hard or long-term wear, cracks and breaks can happen. The key is not to ignore it. Most crown issues can be fixed quickly if caught early.

Regular checkups, mindful eating habits, and protective gear like night guards can help your dental crown go the distance. And if one does break, remember—you’ve got options, and your dentist is ready to help.

If you're dealing with frequent issues or just had a dental crown break, don't hesitate to get professional guidance. Dental health isn't something to put on hold.

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