Dental implant made of a metal or a metal alloy

Dental implant (1) for anchoring of a dental prosthesis, wherein the dental implant (1) comprises a core (10) and an external thread (3) surrounding the core (10), wherein the dental implant (1) has an apical end (11) and a cervical end (12) to be screwed by the external thread (3) with the apical end (11) first into a recess formed in a jaw bone and to anchor the dental prosthesis at the cervical end (12), wherein the dental implant (1) material comprises a metal or a metal alloy, wherein the dental implant (1) comprises in the order from the apical end (11) to the cervical end (12)

• a tip area (2) in which the external thread (3) is sharp-edged,
• a middle area (4) adjoining the tip area (2), in which the external thread (3) is trapezoid-like and
• a coronal area (6) adjoining the middle area (4), in which the external thread (3) is sharp-edged and sharper-edged than the external thread (3) in the middle area (4),
• wherein a longitudinal axis (L) extends through the tip area (2), the middle area (4) and the coronal area (6), wherein the core (10) has a bulge (A) in the middle area (4) in any cross-section passing through the entire length of the longitudinal axis (L), while the tip area (2) and the coronal area (6) are not bulged and the external thread (3) has a nominal diameter which is constant in the entire middle area or increases in the entire middle area in a direction from the apical end (11) to the cervical end (12), whereby the external thread (3) is not bulged in the middle area (4) in any cross-section passing through the entire length of the longitudinal axis (L), wherein a thread depth of the external thread (3) is smaller at every position in an area of the bulge (A) than at every position in the tip area (2) and at every position in the coronal area (6), wherein the greater the bulge (A) of the core (10) the smaller the thread depth, wherein the thread depth in the tip area (2) and in the coronal area (6) is greater than in the middle area (4).