Abstract: The invention refers to a method for producing a dental restoration comprising a lithium silicate glass or glass ceramic as well as a dental restoration inself. The invention further refers to a ingot with the same composition having a defined strength.

Abstract: The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Abstract: The invention relates to glass ceramics, which show high strength, high translucency, high chemical stability and which are still mechanically processible. The invention further refers to a method for producing a dental restoration comprising such glass or glass ceramic as well as the dental restoration itself.

Abstract: The invention relates to glass ceramics based on the lithium metasilicate system (Li2O SiO2 (Li2SiO3)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high- strength, highly translucent and chemically stable glass ceramic.

Abstract: The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Abstract: In order to influence the human melatonin reservoir, the invention proposes the use of bodies, particularly glasses, having a transmittivity for light waves of a wavelength of about 460 nm of at least 92%, preferably of at least 95% or even 99%, as window glazings, for example, in the construction of houses, for sunrooms, or for indoor riding arenas. If said bodies are coated bodies, the invention proposes the use of a coating sol or gel, containing a hydrolyzable or partially or completely hydrolyzed silane and/or SiO2? and/or ZrO2? particle for producing the coating.

Abstract: The present invention relates to a damping device having a first control element with a first surface (O1) and a second control element with a second surface (O2), the two control elements being moveable relative to each other with their two surfaces, a spatial region (intermediate space Z) which is filled at least partially with a magnetorheological and/or electrorheological material (M) and is disposed between the first and the second surface, and a field producer (4) with which a magnetic and/or electrical field can be produced in at least a partial region of the material-filled part of the intermediate space, and also a housing (1) which has two chambers (K1, K2) and in which a piston unit (2) which is moveable relative to the housing and a closing unit (3) which is moveable relative to the piston unit are disposed, the piston unit and the closing unit forming a throughflow opening (D) connecting the two chambers, through which a fluid (F) can be displaced between the two chambers by means of a relative m