How can i whiten my teeth and match my crown ?

Bleaching: You can try in-office or in-home bleaching. Normally, crown wont change color by bleaching but your teeth can become white and decreace the contrast between you dark teeth and white crown. However, it is very difficult, if not impossible to match perfectly.

Dentist: See your dentist to get bleaching trays and bleach until they match the crown.

See your dentist: See your dentist to see if it is possible. If it is , then follow a home whitening treatment recommended and monitored by their office.