Multiple Dentistry Problems -- Oral Cancer Scare?

I'm a 23 year old male with no extensive history of dental problems until now -- one cavity filling and one root canal and cap. I wore braces for a year and a half, but did not continue retainer wearing so my teeth set back into place (my bite is off).

Anyhow, my concern is that I noticed a small (less than 1cm) white bump on the left side of my tongue. I also have two larger red bumps on my upper cheek, right by my teeth, they are symmetrical and look the same. This morning I also noticed a similar type bump on the back of my throat (brand new after eating pizza). The bumps have been there for over two months (aside from new one) and have some white specks around them. My doctor has checked the white bump on my tongue and said it's nothing to to worry about...

I've never smoked in my life, rarely if ever drink and brush my teeth twice daily (bad about flossing). I havent had a cleaning in quite some time (over 1 yr) though. The bumps havent really gotten bigger or nastier.

My root canal does have a black ring around the base of the cap ... I've been told this is the metal of the crown? It doesn't really hurt much, but could this be a risk factor for Oral Cancer as well?

Did you ask your dentist whether he thought you needed further testing for possible cancer? if not, maybe it is time to see the dentist for an oral exam. If he thinks the bumps look odd then he will send you to an oral surgeon for a biopsy.
Chances are you have nothing to worry about.

Oral cancer does not stay the same for months but progresses. I'm guessing these bumps are leftover from your having braces and that you just never noticed them until relatively recently. Braces often cause rub bumps in the mouth.

Another option would be to see an ENT Dr for his opinion but like I said, I doubt you have anything to worry about as far as having cancer.

You are certainly well below even a 5% risk, as oral cancer typically occurs in smoker/chewers who drink to excess (highest risk) and are over 35.
Pay attention to flossing, as people with gum disease can be at higher risk for vascular disease.

Tobacco and alcohol use are the main risk factors for oral cancer.

If you are worried about your tongue, you should see your doctor.