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Can a Tooth Rot Under a Crown?

Posted on 10/15/2023 by Weo Admin
Cartoon of a gold royal crown on a molar at Smiles of TulsaA dental crown is fundamental to enhancing your teeth' beauty and restoring their functionality. After placement of a crown, it is essential to brush and floss your teeth; this helps prevent the accumulation of bacteria underneath the dental caps. A tooth under a crown can develop decay or rot without the proper dental techniques. Some of the top reasons why a tooth rot under a crown can occur include:

Improper Fit

If your dentist does not properly cement a crown under your tooth, it can leave gaps that allow bacteria accumulation. Over time, the bacteria will start to erode the enamel of the underlying tooth leading to cavities and decay. You must ensure that your dentist perfectly fits the crown and cements it.

Oral Hygiene

Maintaining oral hygiene on your teeth is crucial. Use a soft-bristled toothbrush to clean the area around the crown gently. You can also floss this area to remove any stuck debris and dirt. If you neglect to brush and floss your teeth adequately, bacteria will build up, interfering with the structural integrity of your teeth.


Observing the foods you consume is vital to avoid compromising your oral and general health. Foods that are acidic or have high sugar content can contribute to decay around the dental crowns.

Marginal Integrity

During the dental crown placement, your dentist cements the dental tools into place. However, over time the seal between your tooth and crown may weaken. This will allow bacteria to infiltrate the open space and lead to the decay of the underlying tooth.

A tooth can rot under a crown for several reasons, such as diet, poor oral habits, marginal integrity, or an improperly fitting crown. To avoid this problem, ensure you are aggressive about oral hygiene practices and attend regular dental visits. If you note your dental cap does not fit properly, communicate to your dentist early enough.

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