| 主权项 |
1. A dental implant, comprising a dental component and a dental fixture, the dental component including:
a fixture engagement portion provided with
at least two radially projecting first indexing elements, each having an apical end, the at least two radially projecting first indexing elements include a primary first indexing element and a secondary first indexing element being spaced from one another by a first cylindrical enveloping surface portion therebetween; andat least two radially projecting second indexing elements being circumferentially spaced from one another and interposed circumferentially in the first cylindrical enveloping surface portion and between the primary first indexing element and the secondary first indexing element, wherein the first cylindrical enveloping surface portion is free of additional radially protecting first indexing elements;the dental fixture adapted to be inserted into a jawbone and comprising
a component engagement portion adapted to mate with said fixture engagement portion, the component engagement portion being provided with at least two third indexing elements having a coronal end, and at least two fourth indexing elements being adjacent to one another, each one having a coronal end, wherein at least one of the apical ends of said at least two second indexing elements are located further apically relative to the apical ends of the at least two first indexing elements and/or the coronal ends of said at least two fourth indexing elements are located further coronally relative to the coronal ends of the at least two third indexing elements, wherein the first and second indexing elements are radially spaced from one another and are distributed along the circumference of the fixture engagement portion and the third and fourth indexing elements are radially spaced from one another and are distributed along the circumference of the component engagement portion, respectively, in such way that the dental component can only mate in one rotational orientation with respect to the dental fixture, and wherein the two first indexing elements are only enabled to mate with the two third indexing elements after said at least two second indexing elements have mated with said at least two fourth indexing elements. |
