Do I have a cavity? I’m really worried

[WorriedIncisor]

hi,

I have loads of grooves in my teeth and on my back tooth there is like a black dot and a black line on the tooth, is this just a stain or a cavity? I appreciate any help, thank you

Here is an image of the area
https://m.imgur.com/NvA9hmm

 

[xiaomantou]

yes,a cavity will be soonly.you need to ask the dentist the scall the black line and use the composite resin material to fill it .making a complete crowns.

 

[MattKW]

Looks like stain to me. Just get it checked next time, but I rarely even try and remove the stain because it doesn't make it "better" when there's no decay underway.