On my top front teeth i have noticed that they are translucent for about the bottom half. am i lacking something? what can i do to fix it?

More info needed..: How old are you? Do you grind your teeth? Have you worn away the inside of your front teeth? Have you had this your whole life? This translucency is usually due to the teeth being thinner in that area. Speak to your own dentist regarding the cosmetic options available for your situation since treatment can depend on amount of tooth structure left, your bite, and desired results.

Enamel Erosion: caused by excessive soft drink consumption, dry mouth or GERD. Treatment of tooth enamel loss depends on the problem. See your dentist and PCP for evaluation and tests.

Incisal tranlucency: Some translucency is normal and varies both from individual to individual as well as from tooth to tooth. Have you just noticed what was present for years or is this something new? See a dentist to have both the cause and treatment options discussed to correct the problem or merely to improve the esthetics.