This invention provides a measure that makes it possible to prevent more effectively, in comparison with the prior art, the invasion of germs from the gap between a dental prosthesis and the gingiva when the dental prosthesis is used in an oral cavity as well as the infection and inflammation associated therewith.

There is a dental prosthesis or a component thereof, characterized in that: the dental prosthesis or the component thereof has hydroxyapatite fine particles on a surface of the dental prosthesis or the component thereof; the hydroxyapatite fine particles are sintered bodies; and the hydroxyapatite fine particles have a mean particle size of 10 to 1,000 nm.

An implant intended to be at least partially implanted into a bone by means of an implant part having an endosseous surface, wherein said endosseous surface comprises at least one zone having a surface topography exhibiting: an arithmetic mean peak curvature parameter (Spc) less than or equal to 1 μm.sup.1, a density of peaks parameter (Spd) greater than or equal to 0.020 μm.sup.−2.

A dental attachment assembly is provided, including an abutment member and a male member. The abutment member may include an outer locating surface portion having at least two axially spaced retention portions having two generally rounded, annular projections. The male member for engagement over the outer locating surface of the abutment member may include an upper end and a continuous, unbroken skirt having a rounded, convex outer surface. The male member may be constructed from a rigid material and have at least two axially spaced, snap engaging formations on the inner surface of the skirt for snap engagement with the respective retention portions of the abutment member.

A dental implant includes an insert element of a titanium-based material inserted and soldered into a blind hole in an anchoring element of a ceramic. The insert element has spacer members to center it in the blind hole, with a uniform circumferential gap space relative to the anchoring element. A portion of the insert element protrudes outwardly beyond an end face of the anchoring element. The blind hole is partly filled with a glass solder, and the insert element is inserted into the blind hole, whereby some of the glass solder is displaced out of the gap space onto the end face of the anchoring element and the protruding portion of the insert element. A thermal soldering process secures the insert element into the anchoring element. The protruding portion of the insert element and remaining excess solder are removed to form a planar surface.

A dental implant intended for insertion into the jawbone of a patient and having a base body which is provided with a circumferential external thread in an apically arranged screw region on its outer side is intended, on the one hand, to permit a particularly high primary and secondary stability and thus to particularly favor the healing process and, on the other hand, to facilitate in a particularly favorable manner the containment or treatment of an inflammation which may occur in the surrounding bone tissue. For this purpose, according to the invention, the base body is designed to be thread-free in a proximal shaft region provided in addition to the screw region.

The invention relates to a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.

An artificial tooth includes a prosthesis and an abutment including an insertion part inserted into the prosthesis in one direction and a protruding part protruding from the prosthesis, wherein the insertion part is slantingly formed so that the diameter of the outer peripheral surface of the insertion part increases in the one direction, and the protruding part is slantingly formed so that the diameter of the outer peripheral surface of the protruding part decreases in the one direction, and when the prosthesis is a workpiece structure, one end portion of the protruding part is coupled to an artificial tooth processing device.

The methods disclosed herein of generating three-dimensional lattice structures and reducing stress shielding have applications including use in medical implants. One method of generating a three-dimensional lattice structure can be used to generate a structure lattice and/or a lattice scaffold to support bone or tissue growth. One method of reducing stress shielding includes generating a structural lattice to provide sole mechanical spacing across an area for desired bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. Some methods are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

A method for formation of monolithic nanostructures on an implantable device includes: a. depositing a metal film to a surface of the implantable device; b. heating the metal film for a period of time, such that the metal film transforms into multiple discrete nanoparticles, the multiple nanoparticles thereby forming an etch mask on the surface of the implantable device; c. etching the implantable device such that the surface of the implantable device is etched through the etch mask, thereby forming monolithic nanostructures in the surface of the implantable device; and d. (optionally) removing the etch mask, such as by immersion in an aqua regia solution.

A denture containing a henna powder or a henna extract, each of which comes from pulverized henna leaves and may include any of lawsone, tannic acid, and 2-methoxy-1,4-napthoquinone and a denture fabrication material. A denture containing at least one first antimicrobial ingredient selected from the group consisting of henna powder or a henna extract, lawsone, tannic acid, and 2-methoxy-1,4-napthoquinone, and a second antimicrobial ingredient, and optionally, a biocompatible gel and an odor neutralizer.