Black tooth underneath


Joined
Mar 22, 2021
Messages
2
I had a root canal a few years ago and then a kind of plastic temporary crown was placed. The temp crown remained there for 5-6 years. Meanwhile I was told that the worst can happen is the temporary crown to brake. One day I decided to change it. The temp crown was still perfectly fine. I went to have it removed and replaced last year, and the dentist found that the tooth underneath had gone completely black. He said this is nothing to worry about, but I am very worried. Attached please find a pictures of the tooth with the temporary crown, then the tooth underneath after temp crown removed and x-ray image with the new crown placed after. My new crown covers my tooth well, but I worry about the black tooth underneath. Is this normal or it could be dangerous? Is it possible the black tooth to affect the gums and bone. It is one thing for the tooth to get darker, but in this case it is absolutely black. My main concern is whether it could become malignant? Should I keep this tooth? I am even ready to remove it. Please advise.
 
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Joined
Mar 22, 2021
Messages
2
I had a root canal a few years ago and then a kind of plastic temporary crown was placed. The temp crown remained there for 5-6 years. Meanwhile I was told that the worst can happen is the temporary crown to brake. One day I decided to change it. The temp crown was still perfectly fine. I went to have it removed and replaced last year, and the dentist found that the tooth underneath had gone completely black. He said this is nothing to worry about, but I am very worried. Attached please find a pictures of the tooth with the temporary crown, then the tooth underneath after temp crown removed and x-ray image with the new crown placed after. My new crown covers my tooth well, but I worry about the black tooth underneath. Is this normal or it could be dangerous? Is it possible the black tooth to affect the gums and bone. It is one thing for the tooth to get darker, but in this case it is absolutely black. My main concern is whether it could become malignant? Should I keep this tooth? I am even ready to remove it. Please advise.
 

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Dr M

Verified Dentist
Joined
May 31, 2019
Messages
448
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Good day

The discoloration could be because of two things.
1) Discoloration of the temporary cement used with the temp crown. Usually this can be cleaned off.
2) Normal discoloration due to the fact that the tooth has undergone root canal treatment and is now non vital.

As long as the remaining tooth structure is sound, and there is no decay visible on the x-ray, this should not be a cause for any concern.
 
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MattKW

Verified Dentist
Joined
Mar 18, 2018
Messages
1,498
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The blackness isn't the sign of anything harmful. However, there's no good tooth structure remaining, and a permanent crown is not feasible. You can keep going like before with some sort of temporary crown or buildup, but don't spend any big money on this tooth. be prepared to have it extracted the next time the temp crown comes off.
 

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