How to Know When Your Dental Crown Should Be Replaced

You've likely heard that a dental crown is a long-term solution for a damaged or decayed tooth. While these restorations are incredibly durable, they aren't indestructible shields that last forever. At Oasis Family Dental, we want you to feel confident in your smile, which means knowing when an older restoration might be starting to fail.

Most crowns last between five and fifteen years, but their lifespan depends heavily on your daily habits and oral hygiene. Even if a crown looks fine in the mirror, microscopic issues could be developing beneath the surface. Paula Skowronski-Adamiak, DDS, emphasizes that catching these problems early can save you from more complex procedures down the road.

According to the American College of Prosthodontists, patients with crowns should have a clinical exam at least every six months. These routine visits allow our team to check the integrity of your crowns and bridges before a small gap becomes a major problem.

What are the warning signs of a failing crown?

The most common signs that your crown needs replacement include a persistent bad taste, localized sensitivity, or a feeling that the restoration is slightly loose. Because a crown covers the entire visible portion of your tooth, it's easy to assume the tooth underneath is perfectly safe, but that's a common misconception.

If you notice any of the following, it's time to schedule an evaluation with our team: 

• A persistent bad taste or odor: This often signals that the seal between the crown and your tooth has broken; a microscopic gap thinner than a human hair is enough for bacteria to seep underneath and cause decay.
• Gum recession or tenderness: If the gums around your crown are pulling away or feel constantly irritated, it might be a sign that the crown no longer fits correctly or that plaque is building up at the margin
• Sensitivity to heat or cold: While a tooth with a root canal won't feel temperature, a "vital" tooth beneath a crown will signal pain if bacteria have breached the seal and are reaching the nerve
• Physical damage: Visible chips, cracks, or significant wear on the biting surface can compromise the structural integrity of the restoration.
  
  

Why do crowns fail and how can you prevent it?

Crown failure usually happens because of secondary decay at the margin, which is the junction where the crown meets your natural tooth near the gumline. While the crown material itself can't decay, your natural tooth root is still vulnerable to plaque. If you don't maintain a strict brushing and flossing routine, bacteria can hollow out the tooth beneath the crown without you even feeling it.

Mechanical stress is another major factor. If you grind your teeth at night, the massive pressure can cause the ceramic to fracture or break the cement bond. We often recommend custom-fitted nightguards to protect your investment from the forces of bruxism, or teeth grinding. Additionally, avoiding extremely sticky or hard foods can prevent your crown from being pulled loose or shattered.

Don't wait for pain to tell you that something is wrong. Proactively replacing a failing crown is much more affordable and less invasive than waiting until the underlying tooth is unsalvageable. 

If you're concerned about an older restoration or it's been a while since your last checkup, we're here to help. Contact Oasis Family Dental today to schedule an appointment with Dr. Skowronski-Adamiak and our team.