An object for altering cell behavior includes a surface part provided with at least one topography configured to modulate at least one of morphology, proliferation, biochemical functioning, differentiation, attachment, migration, signaling, or cell death of a cell population by physical stimulation, where the at least one topography includes a surface and multiple protrusions protruding from the surface, where the protrusions define multiple valleys between adjacent protrusions such that the adjacent protrusions do not touch, where each protrusion includes at least one protrusion element, where the top surface area of the at least one protrusion element has a complex shape comprising a combination of basic shapes, interconnected by one or more overlapping portions, the basic shapes including at least one of a circle, oval, triangle, square, rectangle, trapezoid, pentagon, hexagon, heptagon or octagon.

A process for the preparation of a topography for improved fibrin network formation and cell mineralization on at least a portion of a dental implant made of a binary titanium-zirconium alloy, the portion being destined to be embedded in a patient's jawbone and to be in contact with the jawbone via a bone-contacting surface, the process includes the subsequent steps of a) subjecting the bone-contacting surface of the dental implant to a sandblasting treatment, b) etching the sandblasted bone-contacting surface, and c) treating the sandblasted and etched bone-contacting surface with water or an aqueous solution for a duration of more than two days, during which nanostructures continuously grow on the bone-contacting surface, the nanostructures extending in at least two dimensions to 200 nm at most. The process is characterized in that the treatment of b) is carried out at a temperature from 40° C. to 60° C.

The present invention relates to a part (2) intended to be used in association with an implant (4) which is itself intended to be secured in a jaw, this part comprising, in series from its distal end (20) towards its proximal end (21), a distal portion (22) for securing in the implant, an intermediate portion (23) for attachment to the epithelial and/or connective tissue, and a proximal portion (24), this part also comprising at least two zones whose surfaces have a different structure, the structure of the surface of at least one of these two zones, located in said intermediate portion (23), said first zone being ordered and repetitive, adapted to the growth of the epithelial tissue and/or the connective tissue and having engravings forming corrugations with a depth of less than 0.5 microns.

The present invention relates to a dental implant that contains a metal-organic framework (MOF) structure involving antibacterial metal ions, especially silver (Ag), thus can release long-term and controlled antibacterial metal ions and exhibits a long-term antibacterial/antimicrobial effect, has osseointegration capability and high biocompatibility and a method for preparing this dental implant.

A dental implant for supporting periodontal tissue and the supporting bone is provided. The dental implant includes an implant member with inner canal for insertion into a periodontal bone socket, and an anchoring assembly. The anchoring assembly includes a first fastening element and radially equidistant cylindrical members. The first fastening element engages the implant member within the hollow axial cavity. The root section includes through-holes for radially and forcibly sliding the cylindrical members through them. When the first fastening element apically advances within the hollow axial cavity, the cylindrical members generate an anchoring force to anchor the dental implant.

A dental implant system including an implant and an abutment is disclosed. The implant includes a generally cylindrical body, a central axis, a distal end for anchoring in a patient's bone and a proximal end opposing the distal end. The proximal end includes a roughened lateralized surface that surrounds an abutment-engaging region. The lateralized surface is disposed at a negative slope relative to the central axis. The abutment includes an upper portion for supporting a tooth-like prosthesis and a lower portion for engaging the abutment-engaging region of the dental implant. The diameter of the lower portion of the abutment is smaller than the diameter of the implant at its proximal end. The lower portion includes a first surface with a soft-tissue enhancing material. The first surface and the lateralized surface defining a circumferentially extending recess having a V-shaped cross-section for receiving and attachment to the soft tissue.

The present invention provides a method for preparing an implant including preparing a mixed etching composition including hydrogen peroxide and a water-soluble carbonate compound and oxidatively etching an implant made of titanium or a titanium alloy by immersing the same in the etching composition; a titanium or titanium alloy implant prepared by oxidative etching with a mixed etching composition including hydrogen peroxide and a water-soluble carbonate compound; and a composition for treating surface of an implant containing hydrogen peroxide and a water-soluble carbonate compound. Further, the present invention relates to a titanium or titanium alloy implant which is prepared by oxidative etching with a mixed etching composition including hydrogen peroxide and a basic solution and on which surface bumps having continuous or discontinuous line-shaped open channel structures in nanoscale are irregularly formed, and a preparation method thereof. The surface of the titanium alloys treated with the mixed etching composition including hydrogen peroxide and a carbonate compound or the etching composition containing hydrogen peroxide and a basic solution of the present invention includes micrometer-sized bumps and channel-shaped nanometer-sized bumps, and thus has an increased surface area, and can not only improve wettability, but also effectively promote cell proliferation and osteocyte differentiation. In addition, the composition includes no chemical compounds such as a strong acid, etc. and is thus environmentally friendly, and such compounds can be prevented from remaining on the surface, which can improve biocompatibility, and therefore, the composition can be useful for implant surface treatment.

A dental implant for supporting periodontal tissue and the supporting bone is provided. The dental implant includes an implant member with inner canal for insertion into a periodontal bone socket, and an anchoring assembly. The anchoring assembly includes a first fastening element and radially equidistant cylindrical members. The first fastening element engages the implant member within the hollow axial cavity. The root section includes through-holes for radially and forcibly sliding the cylindrical members through them. When the first fastening element apically advances within the hollow axial cavity, the cylindrical members generate an anchoring force to anchor the dental implant.

A custom implant fixture which comprises a first fixture part having a first transverse section determined by a shape covered by an alveolar bone of a tooth to be extracted; and a second fixture part formed so as to extend from the first fixture part, determined from the position and the direction of a root portion of the tooth with respect to the alveolar bone, and having a second transverse section.

Dental screw which can be inserted into a cavity of a patient's maxillary and/or mandibular bone, including a terminal portion that can be inserted into the cavity so as to fit within it and so as to engage a side wall thereof. The dental screw further includes a cervical portion, configured to engage an artificial tooth structure, and a central portion extending longitudinally between the terminal portion and the cervical portion. The central portion is shaped as a porous structure, particularly as a trabecular structure, to promote an intraosseous regrowth process. The dental screw is further characterised in that the terminal portion, the central portion and the cervical portion are made from a single piece.