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US 5,312,256 AGranted
Dental implant for vertical penetration, adapted to different degrees of hardness of the bone
OwnerGerard Scortecciinventor
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OwnerGerard Scortecciinventor
Estimating the term…
A dental implant (1) has a cylindrical body (2), with a rounded apical end (3) provided with formations (4, 5, 6, 7, 8) permitting internal bony regeneration firmly securing the implant (1). A basal end (9) forms a polygonal nut (10). The cylindrical body (2) has a succession of alternate flat parts (15, 16, 17, 18) and externally screw-threaded parts (11, 12, 13, 14), extending lengthwise of the body of the implant (1). The external threading increases the contact surface with the bone (20). The threaded parts (11, 12, 13, 14) are disposed at the periphery of circular sectors of the cylindrical body (2) and the flat parts (15, 16, 17, 18) are provided by the bottoms of longitudinal grooves. There are two wide threaded parts (11, 12) for self-tapping and/or retention in already-tapped bone (20) and two narrow threaded parts (13, 14) serving as guide rails during impacting and permitting the escape of chips during self-tapping.
A dental implant adapted to be anchored in a jawbone comprising a cylindrical body with a rounded apical end provided with formations permitting internal bony regeneration for firmly securing the implant, and a basal end forming a polygonal nut, wherein the cylindrical body comprises an alternating succession of flat parts and screw-threaded parts extending lengthwise of the body of the implant, said screw-threaded parts having external helicoidal threading for increasing the contact surface of the implant with the jawbone;
A dental implant adapted to be anchored in a jawbone comprising a cylindrical body with a rounded apical end provided with formations permitting internal bony regeneration for firmly securing said implant, and a basal end forming a polygonal nut, wherein the cylindrical body comprising an alternating succession of flat parts and screw-threaded parts extending lengthwise of the body of the implant, said screw-threaded parts having external threading for increasing the contact surface of the implant with the jawbone;
Dependencies are inferred from the claim text.