Hi there. Thank you for your question. I will be helping you out with your queries
Is it painful?
Since how long are you having this?
Please let me know.
Do you have a picture?
A picture that you can attach here for me to see.
Do you smoke?
What is your age?
When you feel the crater is it firm or hard?
It seems VERY unlikely that this is anything serious like cancer.
Oral cancer is something uncommon and usually happens in people who smoke or chew tobacco.
So I would not worry a great deal at all.
On your next doctor's visit you can have this checked just to be sure.
But as far as I am concerned, I do not think it is cancer and its nothing to worry about.
Are you with me?
If it is sore that almost certainly rules out cancer.
Because oral cancer is almost always painless.
Pain indicates inflammation or infection.
Inflammation can happen due to injury or infection usually.
So the crater is most likely due to your teeth pressing on that part.
Mouth washes will help.
Listerine mouth wash may also help.
I am glad that I was able to help.
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Please go ahead and ask more questions if you have.
I understand but this is not a melanoma.
I have a crater in my mouth myself that has been present for months and that because of my wisdom tooth.
So this is something that does not mean cancer.
But, having said that, I would still like that you should be examined by making an appointment with your doctor, not because I think its cancer but to put your mind to ease.
I think that you are thinking about this too much.
You can apply something over-the-counter bonjela
This will help relieve the pain.