IMPLANT SYSTEM

The present invention relates to a dental implant (20), comprising: a tapered body (32); a longitudinal axis (L2); a distal end (24); an open proximal end (22); implant retaining means (38) provided on an external portion of said body, the implant retaining means comprising at least one thread (38), wherein at least one groove (50) is located on the face (58) of the thread(s) at a proximal portion (26) of the dental implant.; a collar (36) which optionally is provided with at least one groove (46); an internal bore (66) provided within a portion of said body, said internal bore having a proximal end at the open proximal end of said body and a distal end (72); a first portion (68) of said internal bore comprising an internally facing sloping surface (80) having a proximal end and a distal end, said sloping surface extending from near the proximal end of said internal bore toward the distal end of said internal bore, said surface being formed with a sloping path inwardly toward its distal end at an angle of about 8 degrees to about degrees relative to said longitudinal axis when the implant is seen from the side; a second portion of said internal bore comprising an internally facing drive region (69) positioned between the distal end of said surface (80) and the distal end of said internal bore, the internally facing drive region having a plurality of concave lobes (74) which extend partially up into the internally facing sloping surface (80); and a third portion of said internal bore comprising an internally threaded region (70) positioned between said internally facing drive region and the distal end of said internal bore, wherein a ratio (L:D) of the length of the lobes (74) to the implant's diameter is at least 0.4, preferably at least 0.45, for example 0.52. The invention also relates to the combination of an internal connection implant and a complementary abutment, and to an abutment. La présente invention concerne un implant dentaire (20)comprenant : un corps conique (32) ; un axe longitudinal (L2) ; une extrémité distale (24) ; une extrémité proximale ouverte (22) ; des moyens de retenue de l'implant (38) prévus sur une partie externe dudit corps, les moyens de retenue de l'implant comprenant au moins un filet (38), au moins une rainure (50) étant située sur la face (58) du/des filet(s) au niveau d'une partie proximale (26) de l'implant dentaire ; une bride (36) qui est facultativement munie d'au moins une rainure (46) ; un alésage interne (66) situé