6 doctors weighed in:

Can a canker sore be black? Why?

6 doctors weighed in
Dr. Kyle Shank
Dentistry
2 doctors agree

In brief: Rarely

Canker sores may occasionally turn a bit dark while healing, but not usually black.
See your dentist to have it evaluated.

In brief: Rarely

Canker sores may occasionally turn a bit dark while healing, but not usually black.
See your dentist to have it evaluated.
Dr. Kyle Shank
Dr. Kyle Shank
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Dr. Sandra Eleczko
Dentistry
2 doctors agree

In brief: Canker sore

Canker sore are typically rounded white ulceration inside the mouth.
They will heal in about 10 days.

In brief: Canker sore

Canker sore are typically rounded white ulceration inside the mouth.
They will heal in about 10 days.
Dr. Sandra Eleczko
Dr. Sandra Eleczko
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Dr. Marianna Post
Family Medicine
1 doctor agrees

In brief: Yes

Cancer sores or aphthous stomatitis is in a lot of cases a recurrent problem, most of people who develop it have genetic predisposition to it.
The causes are not well known.

In brief: Yes

Cancer sores or aphthous stomatitis is in a lot of cases a recurrent problem, most of people who develop it have genetic predisposition to it.
The causes are not well known.
Dr. Marianna Post
Dr. Marianna Post
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Dr. Ronald Achong
Surgery - Oral & Maxillofacial

In brief: Possible

If there is trauma to the sore there can be some bleeding into the sore.
This will give a dark appearance. Have your dentist take a look as sometimes it might be something else.

In brief: Possible

If there is trauma to the sore there can be some bleeding into the sore.
This will give a dark appearance. Have your dentist take a look as sometimes it might be something else.
Dr. Ronald Achong
Dr. Ronald Achong
Thank
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