The tips of my teeth are slightly transparent?

RedAmulet
The tips of my teeth are slightly transparent and I have no idea what this means.

I don't smoke
I don't drink alcohol
I don't eat candy
I don't drink sugary drinks often (1 or 2 a week)
I've never had any fillings or other problems at the dentist
I brush twice a day, when I first wake up and when I go to bed.

What does the transparent bit mean? If anything
The tips of my teeth are slightly transparent?
7 Opinion