US 12,048,610 B2 · Osseointegrative surgical implant and implant surgical kit

Abstract

Embodiments of the present invention provide an osseointegrative implant and related tools, components and fabrication techniques for surgical bone fixation and dental restoration purposes. In one embodiment an all-ceramic single-stage threaded or press-fit implant is provided having finely detailed surface features formed by ceramic injection molding and/or spark plasma sintering of a powder compact or green body comprising finely powdered zirconia. In another embodiment a two-stage threaded implant is provided having an exterior shell or body formed substantially entirely of ceramic and/or CNT-reinforced ceramic composite material. The implant may include one or more frictionally anisotropic bone-engaging surfaces. In another embodiment a densely sintered ceramic implant is provided wherein, prior to sintering, the porous debound green body is exposed to ions and/or particles of silver, gold, titanium, zirconia, YSZ, α-tricalcium phosphate, hydroxyapatite, carbon, carbon nanotubes, and/or other particles which remain lodged in the implant surface after sintering. Optionally, at least the supragingival portions of an all-ceramic implant are configured to have high translucence in the visible light range. Optionally, at least the bone-engaging portions of an all-ceramic implant are coated with a fused layer of titanium oxide.

Claims19

Dependent claims

A single stage press-fit unthreaded dental implant comprising:

an anchoring portion comprising a soft-bone engaging lower anchoring portion and a hard bone-engaging upper anchoring portion, the anchoring portion configured to be inserted subgingivally into an unthreaded osteotomy formed within the alveolar bone of a patient, said anchoring portion being generally cylindrical in shape and comprising a plurality of gripping edges arranged in a helical pattern extending from a proximal end to a distal end of the lower anchoring portion, the helical pattern having at least one complete helix turn around the lower anchoring portion, the plurality of gripping edges configured to provide frictional anisotropy facilitating locomotion in the insertion direction of said anchoring portion;
and
an abutment portion integrally formed with said anchoring portion, said abutment portion comprising a transgingival portion configured to emerge from said anchoring portion through the gingiva at a predetermined emergence angle relative to a longitudinal axis of the anchoring portion, and a supragingival portion configured to extend into the oral cavity to receive and support a prosthetic tooth or other restorative structure.

A press-fit osseointegrative unthreaded dental implant comprising:

an anchoring portion configured to be inserted subgingivally into an unthreaded osteotomy formed within the alveolar bone of a patient, said anchoring portion being generally cylindrical in shape and comprising a hard-bone-engaging upper anchoring portion and a soft-bone-engaging lower anchoring portion that reduces in diameter as it extends from said upper anchoring portion, wherein at least said upper anchoring portion comprises a plurality of bone engaging edges configured to provide frictional anisotropy relative to the insertion direction of said anchoring portion, and wherein said lower anchoring portion comprises a plurality of gripping edges arranged in a helical pattern extending from a proximal end to a distal end of the lower anchoring portion, the helical pattern having at least one complete helix turn around the lower anchoring portion, the plurality of gripping edges configured to provide frictional anisotropy facilitating locomotion in the insertion direction of said anchoring portion;
and
an abutment portion comprising a transgingival portion configured to emerge from said upper anchoring portion through the gingiva at a predetermined emergence angle relative to a longitudinal axis of said anchoring portion, and a supragingival portion configured to extend from said transgingival portion into the oral cavity to receive and support a prosthetic tooth or other restorative structure.

A dental implant surgical kit comprising a plurality of osseointegrative single stage press-fit unthreaded dental implants and a corresponding plurality of non-osseointegrative implant analogues, each of said osseointegrative single stage press-fit unthreaded dental implants comprising:

an anchoring portion configured to be inserted subgingivally into an unthreaded osteotomy formed within the alveolar bone of a patient, said anchoring portion being generally cylindrical in shape and comprising a hard-bone-engaging upper anchoring portion and a soft-bone-engaging lower anchoring portion that reduces in diameter as it extends from said upper anchoring portion, wherein at least said upper anchoring portion comprises a plurality of bone engaging edges configured to provide frictional anisotropy relative to the insertion direction of said anchoring portion, and wherein said lower anchoring portion comprises a plurality of gripping edges arranged in a helical pattern extending from a proximal end to a distal end of the lower anchoring portion, the helical pattern having at least one complete helix turn around the lower anchoring portion, the plurality of gripping edges configured to provide frictional anisotropy facilitating locomotion in the insertion direction of said anchoring portion;
and
an abutment portion comprising a transgingival portion configured to emerge from said upper anchoring portion through the gingiva at a predetermined emergence angle relative to a longitudinal axis of said anchoring portion, and a supragingival portion configured to extend from said transgingival portion into the oral cavity to receive and support a prosthetic tooth or other restorative structure.

Dependencies are inferred from the claim text.

Osseointegrative surgical implant and implant surgical kit

Life of this patent

Osseointegrative surgical implant and implant surgical kit

Life of this patent

Abstract

Claims19