Can You Get a Cavity on a Crown? Understanding Tooth Decay and Crowns
The short answer is yes, you can get decay underneath or around a dental crown, though it's less common than in untreated teeth. This is because while a crown protects the visible portion of your tooth, it doesn't eliminate the risk of decay altogether. Let's delve deeper into the reasons why and how to prevent this.
What is a Dental Crown?
A dental crown is a cap that fits over a damaged or weakened tooth, restoring its shape, size, strength, and appearance. They're often used to protect teeth after root canals, significant fillings, or extensive tooth decay. While durable, crowns are not impervious to decay.
How Can Decay Occur Under or Around a Crown?
Several factors can contribute to decay developing under or around a dental crown:
- Inadequate preparation: If the tooth isn't properly prepared before the crown is cemented, bacteria can remain trapped beneath the crown, leading to decay. This is a critical step in the crown placement process.
- Poor oral hygiene: Neglecting regular brushing and flossing allows plaque and bacteria to build up around the crown's margins, eventually eroding the tooth structure and causing decay. This is especially important around the gum line where the crown meets the tooth.
- Existing decay before crown placement: If decay wasn't completely removed before the crown was placed, it can continue to progress underneath. Thorough cleaning and preparation are essential prior to crown placement.
- Leaking crown: Over time, the cement sealing the crown to the tooth can wear down or crack, allowing bacteria and food particles to seep underneath and cause decay.
- Type of crown: Certain materials may be more prone to wear or chipping than others, potentially increasing the risk of decay. Porcelain fused to metal crowns generally last longer than all-porcelain crowns. However, proper care is essential regardless of the material.
- Dietary habits: A diet high in sugar and refined carbohydrates can promote bacterial growth and increase the risk of decay, regardless of whether a tooth is crowned or not.
Why is it Less Common Than in Untreated Teeth?
Despite the possibility of decay, it's less likely to occur under a crown compared to an untreated tooth because the crown provides a protective barrier against many external factors that contribute to decay, such as food particles and acids.
How to Prevent Decay Under or Around a Crown?
Maintaining excellent oral hygiene is paramount:
- Brush thoroughly twice a day: Use fluoride toothpaste and a soft-bristled toothbrush, paying close attention to the gum line where the crown meets the tooth. Consider using an interdental brush to clean between teeth and under the crown margins.
- Floss daily: Flossing helps remove food particles and plaque from areas that your toothbrush can't reach. Use floss threaders to easily get the floss under the crown's margins.
- Regular dental checkups: Schedule routine checkups and cleanings with your dentist. X-rays can detect decay that isn't visible to the naked eye. Your dentist can also inspect the crown for any signs of wear or leakage.
- Maintain a healthy diet: Limit your consumption of sugary drinks and snacks.
- Use fluoride treatments: Your dentist can recommend fluoride treatments to further strengthen your teeth and help prevent decay.
Can You Get a Cavity Under a Crown Even With Good Oral Hygiene?
While good oral hygiene significantly reduces the risk, it doesn't eliminate it completely. Occasional problems can still occur due to factors such as a faulty crown or unforeseen circumstances. Regular dental checkups remain crucial.
By following these preventative measures, you can significantly reduce the chances of developing decay under or around your dental crowns and maintain the longevity of your restorative work. Remember, consistent good oral hygiene is essential for overall oral health, regardless of dental restorations.
