Dental implant
First Claim
Patent Images
1. A dental implant for implantation in a jaw bone, comprising:
- an implant body having a screw thread along an outer threaded region, wherein the implant body is sized for threaded rotation into bone for positioning of an intrabony portion of the outer threaded region within said jaw bone;
said intrabony portion having a top, proximally facing surface of a proximal end of the implant body from which three cutaway surfaces extend downwardly towards an apical portion on a distal end of the implant body and extend outwards to a periphery of said implant body, said surfaces at overlapping axial position with said thread, a longitudinal axis of said body defined between said intrabony portion and said apical portion;
wherein said three cutaway surfaces are arranged around the periphery of the implant body and spaced apart circumferentially, and each of said cutaway surfaces defines an outside cutaway volume, each of said volumes being positionable by rotation guided by said threaded region to face a portion of said jaw bone, to create a volume below bone level for filling with new bone growth;
wherein said cutaway surfaces are flat or convex in a direction along said periphery; and
wherein at least one of said three cutaway surfaces ends in a shoulder extending radially outward to the periphery of said implant body; and
wherein said shoulder is located between said proximal and said distal end.
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Abstract
A dental implant including an implant body having a top surface, and at least one non-annular cutaway portion longitudinally extending downwardly from the top surface along one side of the body and outwardly to the periphery, and a method for making the implant. The implant body preferably includes a body portion and a head portion integrally formed with the body portion, the body portion has a periphery and the head portion has a non-circular periphery, and the periphery of the head portion is smaller than the periphery of the body portion.
27 Citations
33 Claims
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1. A dental implant for implantation in a jaw bone, comprising:
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an implant body having a screw thread along an outer threaded region, wherein the implant body is sized for threaded rotation into bone for positioning of an intrabony portion of the outer threaded region within said jaw bone; said intrabony portion having a top, proximally facing surface of a proximal end of the implant body from which three cutaway surfaces extend downwardly towards an apical portion on a distal end of the implant body and extend outwards to a periphery of said implant body, said surfaces at overlapping axial position with said thread, a longitudinal axis of said body defined between said intrabony portion and said apical portion; wherein said three cutaway surfaces are arranged around the periphery of the implant body and spaced apart circumferentially, and each of said cutaway surfaces defines an outside cutaway volume, each of said volumes being positionable by rotation guided by said threaded region to face a portion of said jaw bone, to create a volume below bone level for filling with new bone growth; wherein said cutaway surfaces are flat or convex in a direction along said periphery; and wherein at least one of said three cutaway surfaces ends in a shoulder extending radially outward to the periphery of said implant body; and
wherein said shoulder is located between said proximal and said distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of encouraging bone growth in a jaw bone near a dental implant, comprising:
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selecting a dental implant having a longitudinal axis and having an intrabony portion having an outer screw thread, wherein said intrabony portion comprises three outer cutaway volumes spaced apart circumferentially at overlapping axial positions and arranged around a circumference of an implant body, wherein each of the three outer cutaway volumes extends from an intrabony portion top, proximally facing surface to at least a bone level of the dental implant while interrupting said outer screw thread and extends outwards to the circumference of said implant body, and wherein at least one of said three cutaway surfaces ends in a shoulder extending radially outward to the periphery of said implant body; and
wherein said shoulder is located between said proximal and said distal end; andscrewing the dental implant into a bore in said jaw bone, and axially positioning said dental implant while maintaining by rotation at least one of said three outer cutaway volumes adjacent to a thin portion of bone, by rotating in increments of a third of said circumference of said dental implant, wherein said thin portion comprises a portion of at least one from among the group consisting of a buccal plate and a mandibular ridge. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A dental implant for implantation in a jaw bone, comprising:
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an implant body having a screw thread along an outer threaded region, wherein the implant body is sized for threaded rotation into bone for positioning of an intrabony portion of the outer threaded region within said jaw bone; said intrabony portion having a top, proximally facing surface of the implant body from which three cutaway surfaces extend downwardly towards an apical portion on a distal side of the implant body and extend outwards to a periphery of said implant body, said surfaces at overlapping axial position with said thread, a longitudinal axis of said body defined between said intrabony portion and said apical portion; wherein said three cutaway surfaces are arranged around a circumference of the implant body and spaced apart circumferentially, and each of said cutaway surfaces defines an outside cutaway volume, each of said volumes being positionable by rotation guided by said threaded region to face a portion of said jaw bone, to create a volume below bone level for filling with new bone growth; and wherein at least one of said three cutaway surfaces ends in a shoulder extending radially outward to the periphery of said implant body; and
wherein said shoulder is located between said proximal and said distal end.
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Specification