Check this post and understand why you might need a dental crown and the reason why is so important that your dentist make sure your crown is fully seated. Whether getting one crown or several in a row, working with a highly trusted dentist can make all of the difference. 

Dental crown

Why do I need a dental crown?

When decay and cavities overrun a tooth so much that a crown becomes necessary, it’s fair to believe that the issues within that tooth are resolved when the crown goes on. After all, by the time a crown is placed, the decay is fully removed and the tooth surface is repaired. And, a dentist cements the crown in place to protect the existing tooth (and its neighbors). 

A crown is a dental restoration that can:

  • Protect a cracked or weakened tooth
  • To replace a broken tooth
  • Cosmetically fix a misshapen or discolored tooth
  • Support a weakened tooth that has a large filling in it

In most cases, your dentist will prepare the surface of the natural tooth by filing down an even surface for an attachment. They’ll take an impression of your teeth, and place a temporary crown while customizing the permanent crown. When the permanent crown is ready, they’ll smooth the tooth surface, and fix the permanent crown in place with dental cement.

What is an open margin crown?

In some cases a gap will appear between the crown and the natural tooth surface. This is what is referred to as an open margin on crown. The margin, or the area where the crown contacts the natural tooth, is not sealed, allowing food and bacteria to enter the space between the crown and the tooth.

An open margin crown is different than a simple space between the crown and the gumline. The crown may stop short of the gumline and still be sealed and properly applied.

The open margin specifically refers to a gap between the natural tooth and crown. This can be due to:

  • A rough surface
  • Uneven application of dental cement
  • Other errors in application or crown manufacturing

In some cases, the crown itself is defective or ill-fitting and will never be able to be effectively sealed. This can be difficult to detect with the naked eye as well. A dentist who does not follow accepted protocols for checking fit or who rushes the process of making a mold of the teeth for the crown is more likely to miss any errors in fabrication, too.

Check bellow this case on an actual patient:

As seen on this case when cementing the final crown fitting was confirmed with X-Rays and patient had an open margin. We resubmitted case with new impression to the lab so assure the margins were perfectly closed and the crown was fully seated.

X-rays can confirm if a crown is properly sealed or not. In some cases, an open margin may be visible to the naked eye, but this is not often the case.

What will happen if my dentist doesn’t make sure my crown is fully seated?

Crown margin repair is essential for continued dental health. An ill-fitting or unsealed crown can cause many different problems down the road and may lead to a root canal or eventual tooth extraction.

Fixing an open margin crown is not as simple as just adding some sealant or cement to the tooth and hoping for the best. In the majority of cases, the crown must be removed and examined. A dentist can determine what caused the crown margins to open. If the crown itself does not have any manufacturing defects and fits properly, then they must consider its application.

Before they can replace the crown, the dentist must thoroughly examine your natural tooth. They’ll see if there’s any damage due to the open margin. If the open margin existed for many years, chances are good that there will be some measure of tooth decay underneath the crown.

Any tooth decay will need to be addressed. This might mean drilling out the decay and filling in the open space, or a root canal may be necessary. In some cases, a tooth has decayed so severely or has become necrotic and must be removed.

Open margin crown

If you are experiencing pain or any of those symptoms in the teeth you have your crowns or it’s simply time to replace them, be sure to ask Dr. Shurova at your next appointment. Call to schedule today!

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Office Text: 813-624-5036

Or find us on Facebook or Instagram

Instagram: @mydentaltampa