3m Innovative Properties Company

Ruediger Hampe

Marc Peuker

Helmut Pauser

Thomas Klettke

Andreas R Maurer

Christoph Schulte

Ingo Haeberlein

Martin Goetzinger

Jens Gramann

Sebastian Guggenmos

Ingo R Haeberlein

Johannes Leykauff

The invention relates to a curable dental retraction composition comprising alginate and a solvent, with the proviso that essentially no crosslinker in an amount effective to start setting of the curable dental retraction composition is present. The invention also relates to a container containing said composition and to a kit comprising two parts, wherein the first part comprises the curable dental retraction composition of the present invention and the second part comprises a crosslinker being able to start setting of the dental retraction composition.

Curable dental retraction composition, method of production and use thereof

A nozzle head () for a powder jet device (), for use in applying dental material, comprises a first fluid flow path () for delivering a powder/fluid mixture to a first discharge nozzle (A). A second fluid flow path () is provided for delivering a liquid to a second discharge nozzle (A) located adjacent the first discharge nozzle (A), so that the materials discharged by the first and second discharge nozzles combine at a desired location to form a dental composition. A nozzle-clearing member () is located inside the nozzle head and is movable to remove powder material from the first discharge nozzle when the flow of powder/fluid mixture to the nozzle ceases.

Powder jet device for applying dental material

The invention relates to a dental composition comprising a hardenable powder to be used in a process for retraction of dental tissue. The invention also relates to a kit of parts comprising the dental composition comprising a hardenable powder, a hardening agent, optionally a handpiece of a powder jet device, optionally a powder jet device, and optionally retraction caps. In a further aspect, the invention relates to a method for retracting dental tissue comprising the steps of applying a dental composition comprising a hardenable powder with a powder jet device into the sulcus between soft and hard dental tissue, applying a composition comprising a hardening agent either before or after the previous step, leaving the dental composition in the sulcus for a time sufficient to effect retraction of the soft dental tissue and removing the dental composition from the sulcus.

Dental retraction composition, production thereof and use of a powder jet device for dental retraction

The invention relates to a curable dental retraction composition for reacting gingiva from a prepared tooth structure. The composition comprises an alginate, a di- and/or trivalent ion source, water, a retarder and a filler.

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Wörthsee, Germany

Ruediger Hampe