Dental prosthesis system, components for dental prosthesis system and methods for such a dental prosthesis system

A dental prosthesis system comprising:

• a superstructure provided with a first fastening device;
• a drilling jig;
• and
• a plurality of fixtures that can be implanted in a person's jawbone, each fixture including:
• an anchorage end arranged for anchoring in a jawbone;
• and
• a fastening end arranged for fastening said superstructure at each fixture;
• wherein at least one part of each fixture is substantially rotation-symmetrical and defines the center axis of said fixture;
• wherein said drilling jig comprises a fixed plate arranged to impart to said fixtures pre-determined mutual positions and impart to the center axes of said fixture pre-determined directions relative to each other, the drilling jig being provided with at least one guiding hole having a fixed position in the drilling jig and being arranged for guiding a drilling bit to make an anchorage hold in a person's jawbone;
• and
• wherein said superstructure includes prefabricated elements that incorporate said first fastening device and is adapted for attachment to said fixtures at said pre-determined mutual positions and in said mutual center axis directions;
• and
• wherein the system also contains a reference element attachable to a person's jawbone, said reference element being arranged to co-operate with said drilling jig by engagement therewith to position said drilling jig in a pre-determined position.