In a method for preparing a digital dental map, a three dimensional digital model is prepared about the human teeth and dentures, a later plaster model made based on a later taken impression can be compared with the earlier sample, so that very minute objective changes become visible. If teeth later wear out, or a tooth is damages, it can be easily restored to the condition existing in the earlier time of registration. Additionally, a three dimensional printable real model can be produced from the data even later, that is the qualitative characteristics of the stored model do not change with the time elapsed. The procedure provides the possibility of the preparation of a more thorough design both in the field of prosthetics, implantology and orthodoncy, and the original face profile can be preserved for a life, and the data storage is independent from the dentist providing the treatment.