Dental implant has diameter increasing from apical to crestal direction, self-cutting thread, flange, intersection points between shaft and branches of parabolas

摘要

The body of the implant (1) has a diameter increasing from the apical to the crestal end and has a self-cutting thread (2) broken by cutting aids. An external thread enables tooth crowns to be fixed or an enossal part. The thread running from apically to crestally on the basic body is enclosed by branches of a parabola (P2); the base of the thread (2a) is enclosed by branches of a parabola (P1); and from the intersection points (S1,2) of the shaft (3) are enclosed by the branches of a parabola (P4) A flange (4) and a square (5) adjoin the parabolic shaft, The intersection points (S3,4) contain the transition between the parabola forming the base of the groove and the parabola apically forming the crowned end piece (6).