Dental implants may be designed using a three-dimensional scan of an extracted tooth root and/or a corresponding socket site. The dental implant may include three portions: a root portion designed to sit below the patient's gum line, a connector portion positioned above the root portion and designed to sit above the gum line, and an abutment portion positioned above the connector portion upon which a temporary or permanent crown may be placed. The root portion may include three sections that correspond to three areas of a three-dimensional scan of an extracted tooth root. The first and third sections of the implant may have a size and shape that corresponds to a first and third portions of the three-dimensional scan, respectively. A circumference of the second section of the implant may be smaller than a corresponding circumference of the second section of the three-dimensional scan of the tooth root.

An implant is provided and has an outer surface and multiple cavities. Multiple openings are formed on the outer surface and the cavities communicate with the openings. The maximum latitudinal section area of each cavity is larger than the area of the opening. The latitudinal section of the cavity is parallel with the outer surface of the implant. Therefore, the openings formed on the implant communicate with the cavities, such that the medicine applied on the implant can flow into the cavities. Further, because the maximum latitudinal section of each cavity is larger than the corresponding opening, after flowing into the cavities, the medicine would not easily flow out via the openings.

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.

A dental article including a dental article body made of a ceramic material and a coating formed on the surface of said dental article body. The coating includes crystalline nanostructures made of yttria-stabilized zirconia YSZ.sub.1, the crystal habitus of at least a portion of the nanostructures having at least approximately the shape of a regular convex polyhedron.

A novel non-metallic dental implant is provided. The implant comprises: i) a fixture to be inserted into bone, the fixture comprising a collar having a rough surface at the crest of the fixture and which tapers inwardly from a top to a neck wherein the diameter of the top is greater than the diameter of the neck, and a threaded body extending from the neck of the collar having an upper region and a lower region and comprising self-tapping threads, wherein the fixture comprises a bone compression region at the junction of the upper and lower regions of the threaded body at a site which is below the cortical bone when implanted, wherein the bone compression region comprises the widest diameter along the fixture's length; and ii) an abutment extending from the collar of the fixture. A kit comprising the dental implants is also provided.

A dental implant and a method of dental restoration. In one embodiment, the dental implant includes at least one root adapted to be inserted into a hole of a mandibular bone or a maxillary bone, and an abutment on top of the root adapted to mate with a crown. Each root may be a lattice scaffold configured to house bone grafting material. A bone grafting material may be inserted within the lattice scaffold to occupy vacant space within the root and the hole of the mandible/maxilla. A method of dental restoration may include obtaining an image of at least a portion of a mandibular bone or a maxillary bone of a patient, drilling a hole into the mandibular bone or maxillary bone, inserting a one-piece dental implant with an abutment and one or more non-threaded roots into the hole, and installing a crown on the abutment of the one-piece dental implant.

A biocompatible metal implant is provided with a treated surface subject to abrasive mechanical treatment, acid treatment, and sodium treatment, where the biocampatible metal implant treated surface has a macroporosity in the form of cells having dimensions of the order of 50 μm to 250 μm, the cells having pores of from 1 μm to 50 μm, and pores with a size of less than a micrometer, homogeneously over the whole of the treated surface, the treated surface having a surface roughness Ra of greater than or equal to 1.90 μm.

The invention is a fastener for medical or dental use which requires minimal preparation of a site in bone. According to one embodiment the fastener includes a shank and a head having an aperture with a torque-receiving aperture such as a threaded hole or a polygon such as a hex-sided hole. The other end of the shank is a blunt or a sharp point. Another embodiment includes a radially spaced apart series of strakes each having a linearly spaced apart series of barbs. An alternative embodiment includes on the shank a radially spaced apart series of linear arrays of barbs emerging from the shank itself. The linear spacings may be staggered from one radial line to the next so that as a whole the barbs are arranged into one or more continuous helicies.

An implant for implantation into bone tissue includes an elongated body having an outer surface. The outer surface has at least one thread. The thread makes a number of turns around the body of the implant and includes a root, a flank and a crest. The root and a segment of the flank have a roughened portion compared to the crest. A method of forming an implant having a threaded outer surface including a root, a flank, and a crest includes treating the threaded outer surface at only the root and a portion of the flank while the crest remains untreated.

A method and system of selecting a surface finish for a computer designed component associated with an anatomical area of a specific patient. A computer designed component is created. The component includes at least one surface. An interface of finishing software displays an image of the component and the at least one surface. A plurality of finishes available for the at least one surface is displayed. A selection of one of the plurality of finishes for the at least one surface is input by a user. The component data and finishing data may then be sent to a computer aided manufacturing system to manufacture the computer designed component.