An artificial root for dental implantation comprises a neck portion, an end portion opposite the neck portion, a body portion and a multiplex thread structure which is formed on the body portion. The multiplex thread structure comprises a first thread and a second thread in which the first thread forms a root portion with a specific first width for the second thread, which has a crest portion of a specific second width, to be accommodated into the root portion. The multiplex thread structure is partially configured in such a way that the second width of the crest portion is simultaneously increased when the first width of the root portion is gradually increased.
