What is this?

[Croatia2005]

Hello, I'm 19 years old and I think I have cavities, but I only have them on my baby teeth. Can it spread and go to normal teeth, and in the other corner it is also brown like this. My teeth are normal and white, but I only have cavities in the corners, should I go to the dentist?

 

[Dr M]

Usually at 19 you should not have any baby teeth anymore. The teeth you encircled are your permanent molars. There is a chance that you could have cavities on these teeth, but you will need an x-ray as well. Best to see your dentist for a consultation.