Can You Get a Cavity Under a Crown?
Yes, unfortunately, it is possible to get a cavity under a dental crown. While crowns are designed to protect and strengthen a tooth, they don't offer complete immunity from decay. This is a concern many patients have, and understanding the reasons why it can happen is crucial for maintaining optimal oral health.
Why Can Cavities Develop Under Crowns?
Several factors contribute to the possibility of decay developing beneath a dental crown:
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Inadequate preparation: If the tooth wasn't properly prepared before the crown was placed, leaving small areas of decay or irregularities, bacteria can still thrive and cause cavities. The crown essentially seals over the problem, preventing detection until it’s significantly progressed.
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Poor oral hygiene: Even with a crown, diligent brushing and flossing are still essential. Food particles and bacteria can accumulate along the gum line and under the crown's edges, leading to decay.
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Leaking crown: Over time, the cement that secures the crown to the tooth can break down or wear away, creating gaps. These gaps allow bacteria and food particles to enter and cause decay underneath the crown.
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Pre-existing decay: If decay was present before the crown placement but not completely removed, it can continue to progress under the crown.
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Cracked or chipped crown: Damage to the crown itself can create entry points for bacteria.
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Root caries: Cavities can develop on the root surface of a tooth, even if the crown covers the crown portion. This is especially true if gum recession exposes the root.
How Can I Prevent Cavities Under My Crown?
Preventing cavities under a crown requires a multi-pronged approach:
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Maintain excellent oral hygiene: Brush twice daily with fluoride toothpaste and floss daily, paying close attention to the gum line and around the crown. Consider using an interdental brush to clean around the crown margins more effectively.
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Regular dental checkups: Schedule routine checkups and cleanings with your dentist. X-rays can detect cavities under crowns even before they become visible. These regular visits are crucial for early detection.
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Dietary choices: Limit sugary drinks and snacks, as they feed the bacteria that cause decay.
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Professional cleaning: Professional cleanings remove plaque and tartar that you might miss at home, reducing the risk of cavities.
What Happens If a Cavity Develops Under My Crown?
If a cavity develops under a crown, your dentist will need to remove the crown to address the decay. This might involve a filling, inlay, onlay, or in severe cases, root canal treatment. Once the decay is treated, the crown will likely need to be replaced or recemented.
How Can I Tell if I Have a Cavity Under My Crown?
Unfortunately, you often can't tell if a cavity is forming under a crown without professional dental examination. You might experience some sensitivity to temperature changes, but this is not always indicative of a cavity. Regular dental checkups with x-rays are the best way to detect decay early.
Does insurance cover treatment for cavities under crowns?
Most dental insurance plans cover the treatment of cavities, including those under crowns, but the extent of coverage varies. It’s crucial to check your policy’s details for specific coverage information.
Regular dental checkups and meticulous oral hygiene are the best ways to prevent cavities, even under dental crowns. Don’t hesitate to contact your dentist if you experience any pain or sensitivity around your crown. Early detection is key to preventing more extensive and costly procedures.
