DENTAL IMPLANT/ABUTMENT INTERFACE AND SYSTEM HAVING PRONG AND CHANNEL INTERCONNECTIONS

摘要

A dental implant-abutment interface and assembly comprising an implant (22), an abutment (40) removably attachable to the implant, and a screw receivable within an axial threaded bore common to both the implant and abutment. The implant includes an elongate body (23) having a proximal end (24) and a distal end (26), the axial threaded bore (28) open at the proximal end, a radial end surface (30) of a collar (32) comprising the proximal end, and a plurality of axially elongate recesses (34) substantially arcuate in radial cross-section, disposed polarly at the proximal end, and extending distally away from the radial end surface. Each of the arcuate recesses exhibit a curved wall (36), each having a tangent lying on a common circle disposed inwardly of a circumference of the collar of the implant. The abutment includes the axial threaded bore(48), a proximal end (42), and a distal end (44) itself including a collar (54) and prongs (52) projecting distally away from a radial plane at a distal-most axial extent of the collar in which the radial plane is complementally engagable with the radial end surface of the implant. The prongs are disposed equipolarly about the axial bore of the abutment, and each of the prongs are proportioned for engagement with a respective one of the axial recesses of the implant, the axial bore of the abutment communicating with the axial bore of the implant, and the radial surface of the collar having a like radius to that of the radial end surface of the implant. Each of the prongs has a radial cross-section of lesser area than that of its respective implant recess.