I have a strange whitish tooth discoloration. what should ido?

Decalcification: Nutrition, excess Fluoride intake, and heredity can cause white spots on your teeth. If left alone, these spots of decalcificaton and lead to deterioration of the enamel.

Decalcification: Consult with your dentist, it may a possibility of decalcification.

Hypocalcification: Whitish discolorations are due to improperly formed enamel. This may have happened when the tooth was developing. Another possibility is that that area was trying to decay but the decay process stopped and the area remineralized.