How can i get all of the black mold off my dentures?

Nystatin first: Start with Nystatin or other anti-mold medication. For cleaning and prophylaxis It is a good idea to use a vinegar solution (50% water and 50% white vinegar ) regularly and use a bleach solution (50% water and 50% bleach) for deeper disinfecting treatments.

See a dentist: If you have tried soaking with efferedent and haven't seen an improvement, see a dentist to have the dentures checked out. The dentures might be able to be cleaned at the dentist office or the dentures might need to be remade of there is excessive wear of the teeth and the pink acrylic around the teeth.