My front middle two tooth's edge is kind of weird.?

Question

It's sharp and can look through it.

The upper parts are white but the buttom edge is like a glass. =[ lol

Answer 1

Probably a result of acid erosion. Basically the enamel of your teeth has been thinned and worn away, so it's gotten to the point where you can see through it. Might want to get that checked out by a dentist.