An antimicrobial article that includes: an antimicrobial composite region that includes a matrix comprising a polymeric material, and a first plurality of particles within the matrix. The particles include a phase-separable glass with a copper-containing antimicrobial agent. The antimicrobial composite region can be a film containing the first plurality of particles that is subsequently laminated to a bulk element. The first plurality of particles can also be pressed into the film or a bulk element to define an antimicrobial composite region. An exposed surface portion of the antimicrobial composite region can exhibit at least a log 2 reduction in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, and Pseudomonas aeruginosa bacteria under a Modified EPA Copper Test Protocol.

A glass, glass ceramic, or ceramic bead is described, with an internal porous scaffold microstructure that is surrounded be an amorphous shield. The shield serves to protect the internal porous microstructure of the shield while increasing the overall strength of the porous microstructure and improve the flowability of the beads either by themselves or in devices such as biologically degradable putty that would be used in bone or soft tissue augmentation or regeneration. The open porosity present inside the bead will allow for enhanced degradability in-vivo as compared to solid particles or spheres and also promote the growth of tissues including but not limited to all types of bone, soft tissue, blood vessels and nerves.

The disclosure relates to bioactive glasses for use in biomedical applications. In particular, the glasses described herein are phosphate glasses that show fast filling rates of dentin tubules and have advantageous release rates of metal ions, which provide advantages in antibacterial applications and wound healing.

An antibacterial composition, includes: a silicate-based glass material having a composition of: 55-70 wt. % SiO.sub.2, 0-10 wt % B.sub.2O.sub.3, 3-18 wt. % P.sub.2O.sub.5, 0-10 wt. % A1.sub.20.sub.3, 0-5 wt. % Li.sub.2O, 12-30 wt. % Na.sub.2O, 0-15 wt. % K.sub.2O, 0-10 wt. % MgO, 1-15 wt. % CaO, 2-20 wt. % MO, and 15-35 wt. % R.sub.2O, such that MO is the sum of MgO, CaO, SrO, and BaO, such that R.sub.2O is the sum of Na.sub.2O, K.sub.2O, Li.sub.2O, and Rb.sub.2O, and such that the silicate-based glass material can achieve a 6-log kill rate of at least one of E. coli, P. gingivalis, or S. mutans bacteria.

Proposed is a separable fireproof cover for a valve actuator, the cover including: a plurality of parts, wherein one of the plurality of parts includes: a heat-blocking fireproof glass window in a shape of a circular plate; and a solid fireproof agent provided around an edge of the heat-blocking fireproof glass window, and the one of the plurality of parts is injection-molded by injecting the heat-blocking fireproof glass window and a liquefied fireproof agent into a mold into which a zinc-coated mesh is provided, the liquefied fireproof agent being obtained by mixing epoxy-based Chartek A and Chartek B in a 2.44:1 weight ratio.

Proposed is a separable fireproof cover for a valve actuator, the cover including: a plurality of parts, wherein one of the plurality of parts includes: a heat-blocking fireproof glass window in a shape of a circular plate; and a solid fireproof agent provided around an edge of the heat-blocking fireproof glass window, and the one of the plurality of parts is injection-molded by injecting the heat-blocking fireproof glass window and a liquefied fireproof agent into a mold into which a zinc-coated mesh is provided, the liquefied fireproof agent being obtained by mixing epoxy-based Chartek A and Chartek B in a 2.44:1 weight ratio.

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.

A glass sheet having a composition comprising a total iron content of 0.002-0.03% expressed in the form of Fe.sub.2O.sub.3 and in weight percentage with respect to the total weight of glass, and further satisfying the formula N*.sub.5≤0.05; N*.sub.5 being defined as N*.sub.5=√{square root over ((a*.sub.5−a*.sub.0).sup.2+(b*.sub.5−b*.sub.0).sup.2)}, a*.sub.5 and b*.sub.5 being measured for a sheet thickness of 5 mm in transmission with illuminant D65, 10°, SCI; a*.sub.0 and b*.sub.0 being computed for a sheet thickness of 0 mm in transmission with illuminant D65, 10°, SCI. Such a glass sheet allows a color rendering of the sheet which is essentially the same whatever the view path available for an observer of the object integrating said glass sheet (when looking through its main faces or through its edges or through a zone bearing a diffusing coating).

A glass sheet having a composition comprising the following in weight percentage, expressed with respect to the total weight of glass: Total iron (expressed as Fe.sub.2O.sub.3) 20-750 ppm; Selenium (expressed as Se) 0.1-<3 ppm; Cobalt (expressed as Co) 0.05-5 ppm; and a ratio Er.sub.2O.sub.3/Fe.sub.2O.sub.3 0.1-1.5.
Such a glass sheet has a high luminous transmittance and shows edges which are colorless/achromatic and very luminous/bright, while maximizing the luminous transmittance. The glass sheet is particularly suitable due to its aesthetics as building glass or interior glass.

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.