Process for selectively treating the surface of dental ceramic

• Main Authors: Zimmermann, Dajana, Rolf, Jacqueline C, Jahns, Michael
• Format: Patent
• Language: English
• Published: 16.07.2019
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DENTISTRY; HUMAN NECESSITIES; HYGIENE; LIME, MAGNESIA; MEDICAL OR VETERINARY SCIENCE; METALLURGY; PERFORMING OPERATIONS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; REFRACTORIES; SLAG; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention relates to a process for selectively treating parts of the surface of a porous dental zirconia article, the process comprising the steps of providing a liquid composition and a porous 3-dimensional dental zirconia article having an outer and inner surface, applying the liquid composition to only a part the outer surface and/or inner surface of the porous dental zirconia article, the liquid composition comprising a whitening agent comprising a phosphorous containing component, the phosphorous containing component comprising a phosphate, phosphone or phosphine moiety, with the proviso that at least one P-O unit of the phosphate, phosphone or phosphine moiety is dissociable or able to otherwise interact with zirconia. The invention also relates to a dental zirconia article obtainable or obtained by such a process and a kit of parts comprising a container containing a certain liquid composition.