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 present invention relates to a dental implant (100, 100′, 500) and to a kit for said dental implant. In order to provide dental implants (100, 100′, 500) which meet the general requirements for a successful implantation and use and which can be easily adapted to bone variations and implant offerings, it is proposed according to the invention that the dental implant (100, 100′, 500) comprises a ceramic base body (130, 530), a ceramic abutment (120, 120′, 520), a ceramic tooth structure (110), and/or a connector (1, 1′, 1″, 5) for connecting of base body (130, 530), abutment (120, 120′, 520) and/or tooth structure (110) to each other, and a bushing body (6), which is at least in a final assembly state (E) of the dental implant (100, 100′, 500) received at least partly in the base body (130, 530), in the abutment (120, 120′, 520) and/or in the tooth structure (110) or surrounds the connector (1, 1′, 1″, 5) at least in sections.

The present invention is directed to a porous pre-densified CeO.sub.2-stabilized ZrO.sub.2 ceramic having a density of 50.0 to 95.0%, relative to the theoretical density of zirconia, and an open porosity of 5 to 50% as well as to a densified CeO.sub.2-stabilized ZrO.sub.2 ceramic having a density of 97.0 to 100.0%, relative to the theoretical density of zirconia, and wherein the grains of the ceramic have an average grain size of 50 to 1000 nm, methods for the preparation of the pre-densified and densified ceramics and their use for the manufacture of dental restorations.

The invention relates to a dual fixation system for dental implant prosthesis consisting of: an intermediate abutment assembly for fixation on the implant, clip fixation device, fixation screw and cylinder that allows the prosthesis to be screwed or retained by clip as appropriate, individually or independently for each implant.

This system facilitates both the immediate loading technique and the execution of the definitive prosthesis made on an intermediate abutment, since retention by clip is very advantageous in the case of implants with unfavorable emergencies, joining them to the structure as abutments and without compromising the esthetics of the case.

A process for the preparation of an article by powder injection molding, the process including the steps of providing a feedstock containing a powder of a ceramic, a metal or a metal alloy dispersed in a binder, heating the feedstock, and injecting the heated feedstock into a mold cavity of a mold, where it cools and hardens to the configuration of the mold cavity. The process is characterized in that step c) is carried out under the application of vibrational energy onto the feedstock.

The present invention provides a dental product comprising a base material formed of a zirconia sintered body, and having high aesthetic quality with enhanced fracture toughness and with reduced chipping and cracking in the porcelain layer. The present invention also provides a method for manufacturing such a dental product. The present invention relates to a dental product comprising: a base material formed of a zirconia sintered body, and a porcelain layer, wherein the porcelain of the porcelain layer has a suitable firing temperature of 900° C. or more, and the porcelain layer has a fracture toughness value of 1.20 MPa.Math.m.sup.0.5 or more.

A composite material in one of embodiments includes a crystal phase of titanium fluoride and a metal crystal phase of titanium. The crystal phase of the titanium fluoride is present in a first region located away from a surface in a depth direction.