Tooth has a crack

[WorriedIncisor]

The front of my lower incisor has a small area which looks cracked but there isn’t any crack running from the top or bottom of the tooth it’s just like a small line, also when I shine a torch there next to this crack there is like another line which lights up bright, I’m scared I may have enamel damage ? Anyone know what this could be thanks

 

[MattKW]

Lots of teeth develop hairline superficial fractures in the enamel layer as we get older. They're nothing to worry about.

 

[WorriedIncisor]

Lots of teeth develop hairline superficial fractures in the enamel layer as we get older. They're nothing to worry about.

Even in an 18 year old? Thanks

 

[MattKW]

Any age. More obvious as you get older. Enamel is crystal-like.