A dental implant assembly comprising: 1) an endosseous dental implant comprising at least one anchoring foot suitable for installation in a jawbone of a patient in an endosseous manner and anti-rotation means; 2) a stabilization device in the form of a substantially rigid platform comprising: • at least two slender flexible lateral anchoring extensions, on both sides of the central platform, so as to be able to be placed astride the jawbone, plated on both side thereof, each extension comprising at least one hole for positioning at least one fixing screw; • a prosthetic connection, on its side opposite the jawbone, intended to receive a crown; • an external abutment intended to be fixed in the anchoring foot, on its side resting on the jawbone, which external abutment comprises anti-rotation means allowing, by their association with the anti-rotation means of the endosseous dental implant, to inhibit the relative movements of the external abutment with respect to the anchoring foot once the external abutment is placed in the anchoring foot and • a transmucosal part on the opposite side of the bone and directly below the prosthetic connection, the substantially rigid platform forming a one-piece component with the external abutment, the prosthetic connection and the transmucosal part, 3) a screw allowing its assembly, the head of which corresponds to the prosthetic connection, which screw passes through from end to end the external abutment and the transmucosal part, and the distal extremity of which is threaded, 4) the external abutment and the transmucosal part hollowed out so as to allow the passage of said screw, and 5) The anchoring foot comprising an internal cavity in which is provided a tapping which can cooperate with the complementary thread of said screw to allow assembly of the dental implant assembly by trans-screwing, characterised in that a tapping is provided within the internal cavity of the external abutment, 1) an endosseous dental implant comprising at least one anchoring foot suitable for installation in a jawbone of a patient in an endosseous manner and anti-rotation means; 2) a stabilization device in the form of a substantially rigid platform comprising: • at least two slender flexible lateral anchoring extensions, on both sides of the central platform, so as to be able to be placed astride the jawbone, plated on both side thereof, each extension comprising at least one hole for positioning at least one fixing screw; • a prosthetic connection, on its side opposite the jawbone, intended to receive a crown; • an external abutment intended to be fixed in the anchoring foot, on its side resting on the jawbone, which external abutment comprises anti-rotation means allowing, by their association with the anti-rotation means of the endosseous dental implant, to inhibit the relative movements of the external abutment with respect to the anchoring foot once the external abutment is placed in the anchoring foot and • a transmucosal part on the opposite side of the bone and directly below the prosthetic connection, the substantially rigid platform forming a one-piece component with the external abutment, the prosthetic connection and the transmucosal part, • at least two slender flexible lateral anchoring extensions, on both sides of the central platform, so as to be able to be placed astride the jawbone, plated on both side thereof, each extension comprising at least one hole for positioning at least one fixing screw; • a prosthetic connection, on its side opposite the jawbone, intended to receive a crown; • an external abutment intended to be fixed in the anchoring foot, on its side resting on the jawbone, which external abutment comprises anti-rotation means allowing, by their association with the anti-rotation means of the endosseous dental implant, to inhibit the relative movements of the external abutment with respect to the anchoring foot once the external abutment is placed in the anchoring foot and • a transmucosal part on the opposite side of the bone and directly below the prosthetic connection, 3) a screw allowing its assembly, the head of which corresponds to the prosthetic connection, which screw passes through from end to end the external abutment and the transmucosal part, and the distal extremity of which is threaded, 4) the external abutment and the transmucosal part hollowed out so as to allow the passage of said screw, and 5) The anchoring foot comprising an internal cavity in which is provided a tapping which can cooperate with the complementary thread of said screw to allow assembly of the dental implant assembly by trans-screwing, characterised in that a tapping is provided within the internal cavity of the external abutment,