The present invention relates to a method for producing hydroxyapatite-bioglass macroporous material, to said materials, and to medical devices thereof.

The method comprises a step of preparation of an aqueous suspension of hydroxyapatite and bioglass with a porogenic agent, and subsequent sintering to achieve a macroporous biomaterial.

The macroporous structure of these materials enhances blood vessels and bone cells migration, allowing bone growth through the interior of the bone substitute, thereby increasing the rate of formation of new bone at the site of implantation. Therefore, these materials are advantageously used to produce medical devices, such as bone grafts that resemble the mineral phase of natural bone showing improved mechanical strength and osteoconductivity.

The biomaterials of the present invention are applicable in the medical area, in particular in bone regeneration and reparation techniques as bone grafts.

Disclosed herein are methods for forming low melting point glass fibers comprising providing a glass feedstock comprising a low melting point glass and melt-spinning the glass feedstock to produce glass fibers, wherein the glass transition temperature of the glass fibers is less than or equal to about 120% of the glass transition temperature of the glass feedstock. The disclosure also relates to method for forming low melting point glass frit further comprising jet-milling the glass fibers. Low melting point glass frit and fibers produced by the methods described above are also disclosed herein.

Disclosed herein are methods for forming low melting point glass fibers comprising providing a glass feedstock comprising a low melting point glass and melt-spinning the glass feedstock to produce glass fibers, wherein the glass transition temperature of the glass fibers is less than or equal to about 120% of the glass transition temperature of the glass feedstock. The disclosure also relates to method for forming low melting point glass frit further comprising jet-milling the glass fibers. Low melting point glass frit and fibers produced by the methods described above are also disclosed herein.

A near-infrared absorbing glass is provided and includes 10% to 40% by weight of phosphorus and 5% to 35% by weight of iron, where a molar ratio of phosphorus to iron (P/Fe) of the near-infrared absorbing glass is between 1.75 and 5, and the near-infrared absorbing glass has an average transmittance of less than 10% to light with wavelengths ranging from 930 nm to 950 nm. A near-infrared cut-off filter including the near-infrared absorbing glass is also provided.

Alkali free fluorophosphate-based glass system that is highly radiation resistance (for example, they remain transparent and do not solarize before, during, and after application of high energy radiation of 10.sup.5 Rad or (1 kGy) or greater) and hence, reusable and further, when used with Ce provide a mechanism for determining the existence of radiation.

Alkali free fluorophosphate-based glass system that is highly radiation resistance (for example, they remain transparent and do not solarize before, during, and after application of high energy radiation of 10.sup.5 Rad or (1 kGy) or greater) and hence, reusable and further, when used with Ce provide a mechanism for determining the existence of radiation.

The present disclosure provides glass compositions that include from about 20 mol % to 45 mol % of B.sub.2O.sub.3; and from about 10 mol % to about 80 mol % of one or more glass components selected from the group consisting of CaO and MgO. The glass compositions also include less than 0.1 mol % CdO. The glass compositions may include one or more of Na.sub.2O, K.sub.2O, and a phosphate source, where the B2O3 and the phosphate source total about 60 mol % or less. The glass compositions may include a source of fluoride. The glass composition may be used to desensitize dentin. The present disclosure also provides dentin-desensitizing compositions, as well as methods and uses of the disclosed glass compositions.

The present disclosure provides glass compositions that include from about 20 mol % to 45 mol % of B.sub.2O.sub.3; and from about 10 mol % to about 80 mol % of one or more glass components selected from the group consisting of CaO and MgO. The glass compositions also include less than 0.1 mol % CdO. The glass compositions may include one or more of Na.sub.2O, K.sub.2O, and a phosphate source, where the B2O3 and the phosphate source total about 60 mol % or less. The glass compositions may include a source of fluoride. The glass composition may be used to desensitize dentin. The present disclosure also provides dentin-desensitizing compositions, as well as methods and uses of the disclosed glass compositions.

The invention provides an optical glass having excellent precision molding performance and having a refractive index of 1.46-1.53 and an Abbe number of 77-84. The optical glass comprises the following components based on cations in the molar percentage: P.sup.5+: 10-35%, Al.sup.3+: 10-35%, Ba.sup.2+: 1-20%, Sr.sup.2+: 10-35%, Ca.sup.2+: 1-20%, Gd.sup.3+: 0-10%, and Na.sup.+: 0-10%; the ratio of Sr.sup.2+/(Gd.sup.3++Na.sup.+) being 1-30; anions comprising F.sup.− and O.sup.2−, wherein the ratio F.sup.−/P.sup.5+ of F.sup.− content relative to the total molar percentage of anions to P.sup.5+ content relative to the total molar percentage of cations is 2.5 or more. The invention by rationally adjusting the proportions of the components, the molding performance of the optical glass is improved, and the problem that glass is broken and forms fogs during the molding process is solved, thereby the yield in manufacturing optical elements is improved.

The invention provides an optical glass having excellent precision molding performance and having a refractive index of 1.46-1.53 and an Abbe number of 77-84. The optical glass comprises the following components based on cations in the molar percentage: P.sup.5+: 10-35%, Al.sup.3+: 10-35%, Ba.sup.2+: 1-20%, Sr.sup.2+: 10-35%, Ca.sup.2+: 1-20%, Gd.sup.3+: 0-10%, and Na.sup.+: 0-10%; the ratio of Sr.sup.2+/(Gd.sup.3++Na.sup.+) being 1-30; anions comprising F.sup.− and O.sup.2−, wherein the ratio F.sup.−/P.sup.5+ of F.sup.− content relative to the total molar percentage of anions to P.sup.5+ content relative to the total molar percentage of cations is 2.5 or more. The invention by rationally adjusting the proportions of the components, the molding performance of the optical glass is improved, and the problem that glass is broken and forms fogs during the molding process is solved, thereby the yield in manufacturing optical elements is improved.