The invention relates to a dental implant or abutment assembly comprising: a body having a longitudinal axis, a distal end and an open proximal end; implant retaining means provided on an external portion of said body; an internal bore 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; a first portion of said internal bore comprising an internally facing sloping surface 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 [deg.] to about 40 [deg.] 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 positioned between the distal end of said surface and the distal end of said internal bore; and a third portion of said internal bore comprising an internally threaded region positioned within said drive region and the distal end of said internal bore.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 à l'intérieur d'une partie dudit corps, ledit alésage interne ayant une extrémité proximale au niveau de l'extrémité proximale ouverte dudit corps et une extrémité distale (72) ; une première partie (68) dudit alésage interne comprenant une surface inc