Straumann Holding Ag

University of Basel

Simon Berner

Joachim Bibus

Heiner Bieli

Marc Stephan

Thomas A Jung

Alain Kounga

Philippe Habersetzer

Christoph Appert

Silvia Schintke

Adrian Rohner

Luca Ramoino

Michael De Wild

Christophe Cueille

Ann Elisabeth Wennerberg

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.

Body made of titanium or a titanium alloy having a topography for improved blood coagulation and/or cell attachment

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.

Abutment

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&#xb0;. 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.

Process for providing a dental article

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&#xb0; C. to 60&#xb0; C.

Process for the preparation of nanostructures on a dental implant

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 &#x2212;15 to 15 and b* being from &#x2212;15 to 15.

Process for the preparation of a sterilized ceramic body comprising or essentially consisting of stabilized zirconia of a defined colour

A process for the preparation of a topography for improved blood coagulation and/or cell attachment on a body made of titanium or a titanium alloy. The process 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.

Process for the preparation of a topography for improved blood coagulation and/or cell attachment on a body made of titanium or a titanium alloy

A process for preparing a body having an osseointegrative topography formed on its surface. The process includes the steps of providing a primary body made of a titanium-zirconium alloy containing 13 to 17 wt-% of zirconium, sandblasting the primary body, and etching the sandblasted primary body with an etching solution including hydrochloric acid, sulfuric acid and water at a temperature of above 80&#xb0; C. to obtain the body, said etching being performed for a duration of 350 seconds at least.

Process for preparing a body having an osseointegrative topography formed on its surface

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.

Body made of a ceramic material

A body made of a ceramic material based on zirconia, the body having a surface region extending from the surface of the body to a predetermined depth and a core region integrally formed with the surface region. The ceramic material in the surface region includes a crystalline phase A formed by zirconia in tetragonal phase. The ceramic material in the surface region further includes a crystalline phase B, the crystal structure of which including apart from zirconium and oxygen at least one further component X in a periodic arrangement, the crystalline phase B having a lower theoretical density than crystalline phase A.

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.

Dental implant or abutment comprising a ceramic body covered with a monomolecular phosphate layer

A Process for providing a defined surface topography to at least a portion of a ceramic body, the process comprising the subsequent steps of

Process for providing a defined surface topography to at least a portion of a ceramic body

Process for providing structures for an improved protein adherence on the surface of a body including the steps of

Process for providing structures for improved protein adherence on the surface of a body

Body made of a ceramic material, the body having as an integral part thereof a surface region reaching from the surface of the body down to a predetermined depth. According to the invention, the surface region is enriched with a magnesium component thereby forming a hydrophilic surface area.

Body made of ceramic material

Body made of a ceramic material, the body having as an integral part thereof a surface region reaching from the surface of the body down to a predetermined depth. According to the invention, the surface region is enriched with a calcium component thereby forming a hydrophilic surface area.

A dental implant including a dental implant basic body extending along a longitudinal axis from an apical end to an opposite coronal end, which includes an anchoring part facing the apical end and intended to be anchored in bone of a patient, and a head part facing the coronal end and intended to form the basis on which a suprastructure is mounted. The anchoring part includes a shaft that is substantially cylindrical or that tapers toward the apical end in a cone-like manner. At least a portion of the shaft forms a bone tissue contact region, the outer surface forming a bone tissue contact surface. Coronally to the contact region a soft tissue contact region is arranged, the outer surface forming a soft tissue contact surface. The implant further includes nanostructures formed on the soft tissue contact surface which extend in at least two dimensions to 200 nm at most.

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Basel, Switzerland

Simon Berner