Exemplary embodiments of the present disclosure provide a lithium silicate crystalline or amorphous glass overlaying the top surfaces of zirconia and the manufacturing process thereof. More specifically, exemplary embodiments of the present disclosure provide a lithium silicate glass or lithium silicate crystalline glass with high light transmittance and good coloring characteristics and the manufacturing process thereof, which overlays the top surface of zirconia with high mechanical strength, frameworks, or copings. The lithium silicate crystalline or amorphous glass may include 10-15 wt % Li.sub.2O, 71.1-85.0 wt % SiO.sub.2, 2-5 wt % P.sub.2O.sub.5 working as nuclear formation agent, 1-5 wt % Al.sub.2O.sub.3 to increase glass transition temperature and softening temperature, as well as chemical durability of the glass, and 0.01-1.0 wt % ZrO.sub.2 which increases the binding strength of the zirconia substructure.

A method of forming a dissolvable part of amorphous borate includes: preparing a mixture comprising one or more boron compounds and one or more alkali compounds, at least one of the one or more boron compounds and the one or more alkali compounds being hydrous; heating the mixture to a melting temperature for a predetermined time to melt the mixture and release water from the mixture to form an anhydrous boron compound that is moldable, wherein the amount of alkali compound being selected to achieve an alkali oxide content of between about 10 to 25%; with the anhydrous boron compound at a molding temperature, molding the anhydrous boron compound in a mold; and cooling the anhydrous boron compound to form a solid.

A method of forming a dissolvable part of amorphous borate includes: preparing a mixture comprising one or more boron compounds and one or more alkali compounds, at least one of the one or more boron compounds and the one or more alkali compounds being hydrous; heating the mixture to a melting temperature for a predetermined time to melt the mixture and release water from the mixture to form an anhydrous boron compound that is moldable, wherein the amount of alkali compound being selected to achieve an alkali oxide content of between about 10 to 25%; with the anhydrous boron compound at a molding temperature, molding the anhydrous boron compound in a mold; and cooling the anhydrous boron compound to form a solid.

Known methods of producing a three-dimensional glass object comprise the step of shaping of a glass fiber, wherein the glass fiber provided with a protective sheath is fed continuously to a heating source, the protective sheath is removed under the influence of heat, and the glass fiber is softened. In order to facilitate the production of filigree or optically distortion-free and transparent glass objects as much as possible, and also enable the adjustment of optical and mechanical properties with high spatial resolution, in one aspect the glass fiber has a protective sheath with a layer thickness in the range of 10 nm to 10 μm.

Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.

Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.

The present disclosure relates to a method for producing an optical element (202), wherein a blank of transparent material is heated and/or provided and, after heating and/or after being provided between a first mold (UF) and at least one second mold (OF), is press molded to form the optical element (202), in particular on both sides, and is then sprayed with a surface treatment agent.

A method of forming a glass ribbon includes flowing a molten glass into a caster having a width (W.sub.cast) and a thickness (T.sub.cast) to form a cast glass, cooling the cast glass in the caster to a viscosity of 10.sup.8 Poise or more, conveying the cast glass from the caster, volumetrically heating the cast glass to an average viscosity of 10.sup.6 Poise or less using a gyrotron microwave heating device, and drawing the cast glass into a glass ribbon having a width (W.sub.gr) that is less than or equal to the width (W.sub.cast) of the caster and a thickness (T.sub.gr) that is less than the thickness (T.sub.cast) of the caster.

A casting structure allowing inlayed inner and outer member to be viewed includes: at least one inner member, formed as a three-dimensional shape; an outer member, formed with an inlaying space for allowing the inner member to be combined and inlayed therein, wherein the outer member is a three-dimensional shape formed through a material capable being viewed through; and a filling material member, made of a material capable of being viewed through and filled at an outer side of the outer member inlayed with the inner member so as to form a casting member; wherein, with the inner member being inlayed in the outer member, the filling material member is able to enclose and to be processed with a casting operation for forming the casting member capable of being viewed through.

A casting structure allowing inlayed inner and outer member to be viewed includes: at least one inner member, formed as a three-dimensional shape; an outer member, formed with an inlaying space for allowing the inner member to be combined and inlayed therein, wherein the outer member is a three-dimensional shape formed through a material capable being viewed through; and a filling material member, made of a material capable of being viewed through and filled at an outer side of the outer member inlayed with the inner member so as to form a casting member; wherein, with the inner member being inlayed in the outer member, the filling material member is able to enclose and to be processed with a casting operation for forming the casting member capable of being viewed through.