Hi, I was

Hi, I was one of the many children treated by the NHS and given tetracycline which discoloured my teeth. I am 49 years old, with 12 old crowns ( now discoloured with a little gum recession). The overall look of my téeth has affected my confidence socially. My dentist says that I can’t replace because of possible complications ( root canal etc). Am I stuck with these dreadful teeth or is there anything I can do to improve them?