Just lately I noticed this mark on one of my teeth. It's a blackish milky color and quite shiny. I have uploaded an image below. Should I be worried about this? Does anyone have any idea what it could be?

http://img155.imageshack.us/img155/6494/img2326zs9.jpg

Just lately I noticed this mark on one of my teeth. Its a blackish milky color and quite shiny. I have uploaded an image below. Should I be worried about this? Does anyone have any idea what it could be?

http://img155.imageshack.us/img155/6494/img2326zs9.jpg
It might be a cavity, go to your dds.