A dental abutment assembly for securing a dental reconstruction element to a dental implant, wherein the dental reconstruction element has a bore and the dental implant comprises an external threading for fitting into a cavity of a jaw bone and an abutment receiving bore with a polygonal head socket, the dental abutment assembly comprising a cylindrical abutment body, a tubular reconstruction element support and a manipulating disc; wherein the abutment body comprises a tubular boss, upwardly projecting from a flat support surface end and extending along a first axis, and provided with a through-going abutment bore along a second axis configured with a distal bottom end with a polygonal boss configured for receiving within the polygonal head socket of the dental abutment for coupling the abutment body to the dental implant along said second axis, wherein the first axis and the second axis intersect each other about an imaginary plane by an angle (α), wherein the angle (α) between the first axis and the second axis is about 3° to 8°, tipically about 5°; wherein the reconstruction element support has a proximal anchoring head portion configured with at least one slot, and a distal bottom flat seat end bearing flush against the flat support surface end of the abutment body, said reconstruction element support is further configured with an axially extending through-going head bore with an inside tapering top section, wherein the manipulating disc is configured with a flat top surface and a tapering side wall, whereby the manipulating disc is disposable within the tapering section of the reconstruction element support and the reconstruction element support is couplable to the abutment body by a manipulating fastener extending through the through-going head bore and bearing flush against the flat top surface of the manipulating disc to fasten the reconstruction element support to the abutment body and to apply axially directed force to the manipulating disc which gives rise to outwardly directed radial forces, aimed to the inside tapering top section of the reconstruction support element, causing the anchoring head portion to expand and tighten against inside wall surface of the bore of the dental reconstruction element. wherein the abutment body comprises a tubular boss, upwardly projecting from a flat support surface end and extending along a first axis, and provided with a through-going abutment bore along a second axis configured with a distal bottom end with a polygonal boss configured for receiving within the polygonal head socket of the dental abutment for coupling the abutment body to the dental implant along said second axis, wherein the first axis and the second axis intersect each other about an imaginary plane by an angle (α), wherein the angle (α) between the first axis and the second axis is about 3° to 8°, tipically about 5°; wherein the reconstruction element support has a proximal anchoring head portion configured with at least one slot, and a distal bottom flat seat end bearing flush against the flat support surface end of the abutment body, said reconstruction element support is further configured with an axially extending through-going head bore with an inside tapering top section, wherein the manipulating disc is configured with a flat top surface and a tapering side wall, whereby the manipulating disc is disposable within the tapering section of the reconstruction element support and the reconstruction element support is couplable to the abutment body by a manipulating fastener extending through the through-going head bore and bearing flush against the flat top surface of the manipulating disc to fasten the reconstruction element support to the abutment body and to apply axially directed force to the manipulating disc which gives rise to outwardly directed radial forces, aimed to the inside tapering top section of the reconstruction support element, causing the anchoring head portion to expand and tighten against inside wall surface of the bore of the dental reconstruction element.