Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.

According to one aspect of the present invention, a dental curable composition includes: polymerizable monomers; inorganic particles (A1) and/or inorganic particles (A2) (excluding the inorganic particles (A2); and inorganic particles (B). The inorganic particles (A1) are surface-treated with a compound expressed by a general formula (1) and have a volume-median particle size of greater than or equal to 0.1 m and less than or equal to 0.9 m. The inorganic particles (A2) are surface-treated with a compound expressed by a general formula (2) and have a volume-median particle size of greater than or equal to 0.1 m and less than or equal to 0.9 m. The inorganic particles (B) are particles where a group expressed by a general formula (A) is present at surfaces, are particles where a group expressed by a general formula (B) is present at surfaces, and/or are particles surface-treated with a compound expressed by a general formula (3) and have an average primary particle size of greater than or equal to 5 nm and less than or equal to 50 nm. A ratio of a mass of the inorganic particles (B) to a total mass of the inorganic particles (A1), the inorganic particles (A2), and the inorganic particles (B) is greater than or equal to 0.001 and less than or equal to 0.015.

Lithium silicate-low quartz glass ceramics are described which are characterized by a combination of very good mechanical and optical properties and can therefore be used in particular as restoration material in dentistry.

Described herein are dental treatment compositions, more particularly, a dental varnish composition useful in effective fluoridation, enhancement of remineralization the tooth enamel, and hypersensitivity through occlusion of dentine tubule. The dental varnish composition includes a hydrogel system and at least one fluoride source, wherein the dental varnish is water soluble. The hydrogel system includes at least one polyphenol having at least one phenol group, at least one polymer, and a metal ion. Described herein are also methods of making such dental varnish composition.

Provided is a block body that makes it possible to quickly produce a dental prosthesis with a good accuracy. A material of the block body including SiO.sub.2 in an amount of 60.0 mass % to 80.0 mass %, Li.sub.2O in an amount of 10.0 mass % to 20.0 mass %, Al.sub.2O.sub.3 in an amount of 5.1 mass % to 10.0 mass %, wherein the block body is formed in a column, and a main crystalline phase of the block body is lithium disilicate.

Lithium silicate-diopside glass ceramics are described which are characterized by a controllable translucence and can be satisfactorily processed mechanically and therefore can be used in particular as restoration material in dentistry.

A dental composition is provided as a coating comprising glass flakes providing improved wear-5 resistance and aesthetic properties. The compositions may be used in the treatment of dentine hypersensitivity, dental caries, or in the protection of a tooth from the external environment of the mouth.

Glass ceramics having SiO.sub.2 as main crystal phase and precursors thereof are described which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.

A glass composition including 65 to 72 wt-% SiO.sub.2, at least 10.1 wt-% Li.sub.2O, at least 10.1 wt-% Al.sub.2O.sub.3, 0 to 2 wt-% K.sub.2O, at most 4 wt-% Na.sub.2O, 0 to 1.5 wt-% CaO, 0 to 1.5 wt-% CeO.sub.2, 1 to 5 wt-% P.sub.2O.sub.5, 0 to 0.5 wt-% V.sub.2O.sub.5, 0 to 1 wt-% Ag, and 0 to 1 wt-% ZrO.sub.2, based on a total weight of the composition. The composition is devoid of TiO.sub.2, Cu.sub.2O, BaO, Sb.sub.2O.sub.3, Nb.sub.2O.sub.5, MgO, La.sub.2O.sub.3, and SnO.sub.2. The proportion of Li.sub.2O to Al.sub.2O.sub.3 in the composition is in a range of from 1:1 to 1.5:1.

The invention relates to glass ceramics based on the lithium metasilicate system (Li.sub.2O.SiO.sub.2(Li.sub.2SiO.sub.3)), 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.