The present invention provides a dental curable composition used for dental filling restorative materials, dental crown prosthesis materials such as inlays, crowns, and bridges, materials for constructing anchor teeth, block materials for dental CAD/CAM, etc. More specifically, the present invention provides a dental curable composition comprising a curable resin (A), a porous inorganic filler (B), and a polymerization initiator (C), wherein the porous inorganic filler (B) comprises a silicon dioxide, and an oxide comprising at least one kind of the other metallic elements, and a ratio (I.sub.1/I.sub.2) of a maximum absorbance (I.sub.1) of 3730 to 3750 cm.sup.1 to a maximum absorbance (I.sub.2) of 3000 to 3600 cm.sup.1 in infrared absorption spectrum of the porous inorganic filler (B), is not less than 1 and not more than 3.

A method of smoothing teeth is disclosed that is based on surprising evidence achieved by practicing a method involving application of calcium powder or calcium containing composition to teeth, and maintaining it in contact with the teeth by application of an edible adherent wax containing material, that serves to maintain contact between the teeth and the calcium powder or calcium containing composition for at least one hour.

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

The present invention relates to a method of fabricating an improved lithium silicate glass ceramic and to that material for the manufacture of blocks for dental appliances using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 800 C. indicating that the samples will support the temperature process without shape deformation.

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.

Provided is a method for quickly producing a dental prosthesis with a good accuracy.

The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO.sub.2, no less than 10.0 mass % and no more than 20.0 mass % of Li.sub.2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al.sub.2O.sub.3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.

Dental compositions and methods provide a flowable ceramic powder of a powdered component, wherein the compositions and methods comprise at least one dental glass, glass ceramics, metal oxide, mixed oxide selected from metal oxides and/or a mixture comprising at least two of said components, a printable dental ink. Moreover, the compositions and methods produce dental prosthetic form bodies.

The present invention relates to a glass ceramic powder comprising i) a glass material formed from a glass mixture containing a lithium and oxygen containing compound selected from Li.sub.2O and/or Li.sub.2CO.sub.3, SiO.sub.2, K.sub.2O, La.sub.2O.sub.3, and ii) seed particles comprising Li.sub.2SiO.sub.3 crystals and/or Li.sub.2Si.sub.2O.sub.5 crystals. The present invention also relates to a method of manufacturing of said glass ceramic powder, a method for preparing compacted and sintered bodies from the glass ceramic powder and bodies obtainable by said method.

Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO.sub.2, no less than 10.0 mass % and no more than 20.0 mass % of Li.sub.2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al.sub.2O.sub.3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.

The invention relates to a method for producing a blank of lithium silicate glass a starting composition of at least 8 wt-% of a stabilizer selected from the group consisting of ZrO.sub.2, HfO.sub.2, and mixtures thereof, wherein the method includes the steps of mixing the raw materials comprising the stabilizer in powder form, wherein the powder of the stabilizer has a particle size d.sub.50=x with 0.3 mx1.5 m, melting the raw materials in a crucible at a temperature T.sub.AU and storing the melt in the crucible for a time t.sub.H, pouring the homogenized melt into molds, wherein the melt flows out of the crucible with a discharge temperature T.sub.AB being T.sub.AUT.sub.AB, wherein the filling of the molds and the molding of the melt in the molds takes place with a cooling rate A.