Abstract:
A body made of titanium or a titanium alloy having a topography for improved blood coagulation and/or cell attachment. The body is obtainable by a process that includes the subsequent steps of: a) etching at least a portion of the surface of the body with a first etching solution including a mineral acid, and b) etching the surface etched under a) with a second etching solution different than the first etching solution, the second etching solution including hydrofluoric acid.
Abstract:
Process for providing structures for an improved protein adherence on the surface of a body including the steps of a) providing a basic body made of titanium or a titanium alloy, b) acid-etching the basic body, c) storing the acid-etched basic body in an aqueous solution, whereby nanostructures are formed on the surface of the basic body, and d) drying the basic body with the nanostructures formed on its surface.
Abstract:
The present invention relates to an abutment of a dental implant system for connecting a dental implant and a suprastructure, said abutment comprising an abutment basic body extending from an apical end to a coronal end arranged opposite to the apical end. The abutment basic body comprises a dental implant connecting portion facing the apical end and adapted to fit with a corresponding abutment connecting portion of the dental implant and/or an intermediate part to be directly or indirectly connected with the dental implant. It further comprises a support portion facing the coronal end and designed such to allow the suprastructure to be mounted directly or indirectly. According to the invention, the abutment further comprises nanostructures formed on at least a portion of the outer surface of the abutment basic body, said nanostructures extending in at least two dimensions to 200 nm at most.
Abstract:
A process for providing a sterilized dental article, at least a portion of the surface of which exhibiting a contact angle of less than 45°. The process includes the subsequent steps of a) providing a dental article and b) subjecting the initial dental article to a hydrogen peroxide plasma treatment. It is characterized in that the hydrogen peroxide plasma sterilization treatment of step b) is carried out in the presence of a carbon-containing compound, which during treatment is converted to form a carboxylic group attached to the surface of the dental article.
Abstract:
A Process for providing a defined surface topography to at least a portion of a ceramic body, the process comprising the subsequent steps of a) applying a layer of a calcium containing substance comprising at least one calcium compound onto the surface of at least a portion of the ceramic basic body; b) thermally treating the ceramic basic body with the layer applied thereon at an elevated temperature, whereby a calcium compound or a calcium component based on the calcium compound diffuses into the basic body to form an intermediate body, said intermediate body comprising in its outermost surface region a calcium containing crystalline phase; and c) chemically treating the outermost surface region of the intermediate body with an inorganic acid or base to partially remove the calcium containing crystalline phase, thereby obtaining the surface topography.
Abstract:
A body made of a ceramic material having a surface region extending from the surface of the body to a predetermined depth and a core region being integrally formed with the surface region. The ceramic material in the surface region includes a calcium containing crystalline phase.
Abstract:
The present invention refers to a dental implant or abutment including a ceramic body having a surface, the ceramic body including zirconia as the main component. At least a first surface area of the ceramic body is covered with an at least essentially monomolecular phosphate layer having a thickness of less than 1.0 nm. The phosphate layer contains phosphates selected from the group consisting of ortho-phosphate, poly-phosphates, cyclo-phosphates, and mixtures thereof. Furthermore, a kit including a gas- and liquid-tight container, with the dental implant or abutment being stored inside the container, and a method for the preparation of the dental implant or abutment are disclosed.
Abstract:
Process for providing structures for an improved protein adherence on the surface of a body including the steps of a) providing a basic body made of titanium or a titanium alloy, b) acid-etching the basic body, c) storing the acid-etched basic body in an aqueous solution, whereby nanostructures are formed on the surface of the basic body, and d) drying the basic body with the nanostructures formed on its surface.
Abstract:
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.
Abstract:
A process for the preparation of a sterilized ceramic body including or essentially consisting of stabilized zirconia of a defined colour, including the steps of: providing a ceramic primary body including or essentially consisting of stabilized zirconia of a first colour A, and sterilizing the primary body using radiation sterilization whereby the primary body undergoes a colour change to a colour B. The process includes the further step of irradiating the sterilized primary body with electromagnetic radiation of at least one wavelength lying in the wavelength band ranging from 150 nm to 700 nm to induce an at least partial reversal of the colour change to obtain a colour C of the sterilized ceramic body, the colour C complying with the following requirements in the CIELAB colour space: L* being from 54 to 95, a* being from −15 to 15 and b* being from −15 to 15.