Implant for dental prostheses

An implant (1a, 1b, 1c) for dental prostheses, comprising:

• an endosseous portion (2) configured to be implanted in a bone site of a dental arch;
• and
• a stump (3) configured to be fixed to said endosseous portion (2) and to be coupled to a dental prosthesis,
• wherein said endosseous portion (2) comprises a crown margin (24) suited to be opposed to a corresponding crown margin (33) of said stump (3), thereby defining a sealing area (5),
• wherein said crown margin (33) of the stump (3) is opposed to and smaller than said crown margin (24) of the endosseous portion (2), whereby a most external edge (35) of the crown margin (33) of the stump (3) is recessed with respect to a most external edge (26) of the crown margin (24) of the endosseous portion,
• wherein each one of said crown margins (33, 24) is a planar surface, said planar surfaces being not parallel to each other,
• wherein at least one of the crown margins (33, 24) of the endosseous portion or the stump lies on a conical surface while the other one of the crown margins (24, 33) of the endosseous portion or the stump lies on a straight or conical surface having a different taper, so that, once said stump (3) has been coupled to said endosseous portion (2), a contact and interference surface (51) between said crown margins (33, 24) is an annular surface that is smaller compared to a size of the crown margins (33, 24) and proximal to an external edge (35) of said crown margin (33) of said stump (3).