The present invention relates to a dental fixture for insertion into a jawbone, said fixture comprising a holding portion which is arranged and configured for holding an engagement portion of a dental component, the holding portion being provided with an indexing section, wherein the shape of the mating contour of the indexing section in a first plane differ from the shape of the mating contour of the indexing section in a second plane being taken at a different height as seen in the apical-coronal extension of said fixture, and wherein the shapes of the mating contours of the indexing section at said first and second planes together allow a received dental component to be positioned in only one or two positions in relation to the fixture. The present invention also relates to a corresponding dental component and to dental implant assemblies.
