| 摘要 |
<p>A dental implant, comprising a generically axial- symmetric endosteal body (11) with three different portions (12, 13, 14) in series with each other, respectively an apical portion (12), a central portion (13) and a coronal portion (14), a first common single- start threading (16) with a crest (18) being formed in the central portion (13) and the apical portion (12), while a second, multi-start threading (17) with at least two threads having respective crests (17a, 17b) is formed in said coronal portion (14), the roots of the threadings defining a core (C) of the implant. The single crest (18) of the first threading (16) develops into said at least two crests (17a, 17b) of the second threading (17) such that said root (C) of the implant progresses continuously between the first threading (16) and the second threading (17).</p> |
