When Do You Need a New Dental Crown?

Dental crowns are built to be strong and long-lasting, but they don't last forever. Whether you have an older cap that is showing its age or you are noticing discomfort, knowing when to replace a crown is key to protecting your underlying tooth and keeping your smile looking seamless.

At Chow Dental, we specialize in modern, metal-free crown replacements for patients across San Francisco and San Carlos.

Top Signs You Need a New Dental Crown

1. A Visible Black or Dark Line at the Gumline If you notice a dark edge where your crown meets your gums, it is often due to an older porcelain-fused-to-metal (PFM) crown. As gums naturally recede over time, the underlying metal foundation or dark root structure becomes visible.

2. Decay or Cavities Under the Crown While a dental crown cannot decay, the natural tooth underneath it still can. If plaque and bacteria get trapped along the margin of an old crown, new decay can form beneath the cap, putting the tooth's nerve at risk.

3. Bad Breath or Unpleasant Taste Around the Tooth Persistent bad breath (halitosis) or a bad taste centered around a specific crown is a common warning sign. This often indicates trapped bacteria or active decay hiding underneath a crown that needs replacement.

4. Chips, Cracks, or Wear After years of chewing (and thousands of meals!), porcelain can chip, fracture, or wear down, compromising both your bite and your tooth’s protection.

5. Pain, Sensitivity, or Receding Gums Sensitivity to heat, cold, or biting pressure can mean the crown's seal has broken, allowing bacteria to reach the sensitive inner tooth or nerve.

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Modern, Natural-Looking Crowns at Chow Dental

While older PFM crowns lasted a long time, modern dentistry has evolved. At Chow Dental, nearly 99% of our crowns are crafted from high-strength zirconia, porcelain, or ceramic. Because these materials contain no metal, you will never have to worry about a dark line appearing at your gumline—even if your gums change over time.

What to Expect During Crown Replacement

• Gentle Removal & Decay Treatment: We carefully remove the old cap, eliminate any hidden decay, and rebuild the tooth core with a protective build-up filling.

• Gag-Free 3D Digital Impressions: Using advanced 3D scanning technology, we take precise digital impressions—no messy putty required!

• Perfect Match for Your Bite: Our 3D scans ensure your custom-crafted crown perfectly matches the shape, shade, and feel of your original tooth so your bite feels completely natural (and your retainers still fit!).

  
  

Schedule Your Crown Consultation in San Francisco or San Carlos

If you are bothered by an unsightly dark line around an old crown, or if you are experiencing sensitivity or pain, don't wait for the issue to worsen.

Contact Chow Dental today to schedule an evaluation at our San Francisco or San Carlos office and discover how a modern zirconia or ceramic crown can refresh your smile!

This specific crown, made of porcelain fused to a metal base, lasted for nearly 20 years, equating to around 20,000 meals for our patient! It was finally time to replace it with a new zirconia crown. We hope the new one will also endure another 20,000 meals.

Once the old cap is taken off, all decay is eliminated, and the tooth is reconstructed with a build-up filling to fill the gaps left by the decay. This build-up filling also safeguards the nerve inside the tooth if it is still alive, or it protects the previous root canal treatment. Afterward, we perform a 3D scan of the natural tooth to create a brand new custom-made crown.