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US 5,312,253 AGranted
Dental implant post and prosthesis construction
AssigneeWellesley Research Associates, Inc.
InventorPaul R. Chalifoux
Life of this patent
Estimating the term…
Abstract
A dental implant is provided for insertion into the jawbone of a patient for the purpose of building a dental prosthesis thereon. The implant includes a central hole for accommodating a dental post having slots and/or a key structure. The dental post slots fit over wings or allow wings/key structures to pass through in order effect retention while avoiding rotation of the positioned post.
Claims33
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant,
- at least one wing extending in a direction selected from the group consisting of (a) into said implant central hole, (b) upward from the top surface of said implant and (c) into said implant central hole and at least one wing extending upward from the top surface of said implant,
- a dental post having a stem section shaped to fit into said central hole and having at least one slot to fit over a wing of said implant,
- and means for positioning said at least on slot onto said at least one wing, said at least one slot and said at least one wing being shaped to prevent rotation of said post in at least one direction after said positioning.
1 more element
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant,
- at least one slot in said internal surface of said implant, and said slot open to said central hole,
- a dental post having a stem section shaped to fit into said central hole and said post having a second central hole extending though a vertical height of said post,
- and a key extending through said second central hole and into said slot.
1 more element
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant and a bottom internal surface.
- at least one slot formed in an internal surface of said implant.
- a dental post having a stem section shaped to fit into said central hole, said post forming a second hole with said implant wall and said post wall after placement, said second hole extending the vertical height of said post, and
- a key extending through said second hole and into said slot.
1 more element
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant and a bottom internal surface,
- at least one slot formed in said bottom internal surface and said slot open to said central hole,
- a dental post having a stem section shaped to fit into said central hole, said post and said implant being shaped to form a second central hole extending the vertical height of the post and a key extending through said second hole and into said slot.
- a key extending through said second hole and into said slot.
1 more element
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant and a bottom internal surface, said implant having a wing which extends upward, one said wing having at least one wall angled with respect to a wall of the central hole,
- a dental post having a stem section shaped to fit into said central hole,
- a coping covering said post and said implant,
- and at least one slot formed by a wall of said post and a side of said coping.
1 more element
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant and a bottom internal surface, said implant having a slot which extends down from the top surface, one said slot having at least one wall angled with respect to a wall of the central hole,
- a dental post having a stem section shaped to fit into said central hole,
- a coping covering said post and said implant with at least one tab shaped to fit into said at least one slot of said implant.
A dental system for insertion into a bore of a jaw bone of a patient which comprises:
- a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant and a bottom internal surface,
- a dental post having a stem section shaped to fit into said central hole,
- and at least one slot formed by a wall of said post and a wall of said coping, at least one said slot having at least one wall angled with respect to a wall of the central hole,
- and a coping covering said post and said implant with at least one tab shaped to fit into said at least one slot formed by wall of said implant and a wall of said post.
1 more element
Dependencies are inferred from the claim text.