Dear Sir/Madam,
My front central incisor is a non-vital tooth and has now turned grey. It has already been internally bleached once, but that was five years ago. I would like to know whether the tooth can be bleached again and how much this damages the tooth itself. In your opinion, would it be better to make a crown? Is a crown or bleaching covered by health insurance?
Thank you for your time and answer.
Klara