Dental Tips Blog

Nov
14

Why Are Crowns Necessary?

Posted in Root Canals

While there are numerous reasons for a tooth needing a crown, most of the time crowns are needed is for one of the following two reasons:

Replacement of Older, Large Fillings

As fillings begin to age, they allow leakage around their margins between the filling and the tooth. This compromises the quality of the restoration and can allow recurrent tooth decay to develop or cracks in the teeth. Because the enamel shell around the filling is dry and weak, an aging filling does not provide the support to the tooth that is needed to withstand normal functions such as chewing and biting. Because a tooth must be re-prepped when replacing a filling, much larger fillings are not durable. Instead, covering the entire tooth with a crown helps distribute pressure and withstand normal functions.

After a root canal

Following root canal treatments, the tooth is no longer vital and can become dry and brittle. Because the center of the nerve was treated, the crown of the tooth is also compromised and requires a more thorough restoration to maintain the functionality of the tooth. Covering the root canal treated tooth with a crown allows the tooth to remain functional and healthy for years to come.

Some other reasons for crowns include fractured teeth, aesthetic concerns or severe wear due to grinding. Crowns can be made out of a variety of different materials depending on what your needs are. Most crowns are porcelain, porcelain fused to metal, or gold. Some offices also offer in-house crown fabrication that takes only one appointment. Traditional crowns are sent to dental laboratories and may take up to several weeks to fabricate.

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