Buttress thread implant
AssigneeBiolok International, Inc.
InventorLeon Shaw
Life of this patent
Estimating the term…
Abstract
A buttress-thread dental implant constitutes a rigid body including axially symmetric and radially uniform circumferential spiral pitch surfaces in the range or about 22 to about 28 of such pitch surfaces per axial inch. Above each pitch surface is a concave upper bevel surface which is longer than a lower bevel surface beneath each pitch surface. The intersection of each plane of each pitch surface with each plane of each lower bevel surface defines a total included bevel angle in the range of about 90 to about 1.30 degrees. The implant is also characterized by ratio of thread pitch to thread depth in the range of about 1.25:1 to about 1.40:1.
Claims11
A bone implant, comprising:
- a rigid body having therein axially symmetric and radially uniform circumferential spiral pitch surfaces, in the range of about 22 to about 28 of said pitch surfaces per axial inch, an upper concave bevel surface above each pitch surface which is longer than a lower bevel surface beneath each pitch surface, and each intersection of each plane of each pitch surface and each plane of each lower bevel surfaces defining a total included angle in the range of about 90 to about 130 degrees, said body having minor thread diameters at intersections of said upper and lower bevel surfaces, said spiral pitch surfaces and said minor thread diameters defining a ratio of thread pitch to thread depth in the range of about 1.25:1 to about 1.40:1.
Dependencies are inferred from the claim text.