摘要:
A hard tissue repairing material includes zirconia as a base material. A surface of the base material has a hydrophilic group. The hydrophilic group is bonded to zirconium atom in the base material. The base material may contain at least an ionic component that is selected from a group consisting of calcium ion, sodium ion, potassium ion, and phosphate ions within the surface. A hard tissue repairing material may include zirconia as a base material and a layer of a main component of an apatite. The layer of the apatite may be formed on a hydrophilic group bonded to zirconium atom in the base material.
摘要:
A hard tissue repairing material including a base material and a surface layer having a crystalline zirconia covering the base material, being characterized in that the film includes a Zr—OH group. A middle layer may be formed between the base material and the surface layer and, in such case, includes at least one element of the base material and at least one element of the surface layer having a crystalline zirconia.
摘要:
A hard tissue repairing material includes zirconia as a base material. A surface of the base material has a hydrophilic group. The hydrophilic group is bonded to zirconium atom in the base material. The base material may contain at least an ionic component that is selected from a group consisting of calcium ion, sodium ion, potassium ion, and phosphate ions within the surface. A hard tissue repairing material may include zirconia as a base material and a layer of a main component of an apatite. The layer of the apatite may be formed on a hydrophilic group bonded to zirconium atom in the base material.
摘要:
The present invention aims to provide a curable resin composition which gives a cured product having a low linear expansion coefficient. The curable resin composition of the present invention contains, as essential components, (A) an organic compound having at least two carbon-carbon double bonds reactive with SiH groups per molecule, (B) a compound containing at least two SiH groups per molecule, (C) a hydrosilylation catalyst, (D) a silicone compound having at least one carbon-carbon double bond reactive with a SiH group per molecule, and (E) an inorganic filler.
摘要:
Bone repair materials are disclosed, from which ions are hardly eluted in living body and which are superior in apatite-forming ability and resistance to apatite peeling and have a scratch resistance high enough for practical use. The material comprises a substrate made of titanium or titanium alloys, and a surface layer, made substantially of titanium oxide, along the surface of the substrate. The substrate has on the surface thereof irregularities of from 1 nm to 10 μm in average in both width and depth. The layer has a zeta potential of +4.5 mV or more under an aqueous solution environment of pH 6 to 8, and a critical scratch resistance of 35 mN or more when vibration 100 μm in amplitude is added to a stylus with a spring constant of 200 g/mm on the surface layer and the stylus is moved at a rate of 10 mm/sec under a load increasing at a rate of 100 mN/min.
摘要:
The titanium oxide-organic polymer composite material for artificial bone obtained by forming titania gel on the surface of said base material by titania solution treatment to dip into a solution of 0° C. to 50° C. temperature for from several seconds to 1 week obtained by adding a solution consisting of acidic alcohol and water into alcohol solution of titaniumtetraalcoxide to a base material composed of a polymer compound selected from a group consisting of polyolefin, polyester and nylon, and modifying to a titanium oxide membrane which forms apatite having similar Ca/P atom ratio to an apatite of mammalian's bone in supersaturated aqueous solution to apatite or from a body fluid of mammalian by dipping said base material on the surface of which titania gel is formed into hot water of 50° C. to 95° C. or solution of room temperature to 95° C. to which acid is added.
摘要:
An artificial bone is disclosed. The artificial bone comprises: a porous body comprising a lump of titanium or titanium alloy and having a porosity of 30 to 80%, the body having a interconnected pore (3) with a diameter of 100 to 3000 μm and a hole (4) with a diameter of 50 μm or less on an inner surface of the pore; and a film formed on at least a part of a surface of the pore and the hole, the film comprising at least one phase selected from an amorphous titanium oxide phase, an amorphous alkali titanate phase, an anatase phase and a rutile phase aligned with (101) plane. The artificial bone has high strength and osteoinductivity.
摘要:
A bone repair material being superior in apatite-forming ability and its stability in a storage and high in scratch resistance is disclosed. The material is produced by a method comprising the steps of: immersing a substrate made of titanium or a titanium alloy in a first aqueous solution that does not contain calcium ions but contains at least one cation selected from the group consisting of sodium ions and potassium ions and is alkaline; immersing the substrate in a second aqueous solution that does not contain phosphate ions but contains calcium ions; heating the substrate in a dry atmosphere; and treating the substrate with hot water of 60° C. or higher or with steam.
摘要:
Bone repair materials are disclosed, from which ions are hardly eluted in living body and which are superior in apatite-forming ability and resistance to apatite peeling and have a scratch resistance high enough for practical use. The material comprises a substrate made of titanium or titanium alloys, and a surface layer, made substantially of titanium oxide, along the surface of the substrate. The substrate has on the surface thereof irregularities of from 1 nm to 10 μm in average in both width and depth. The layer has a zeta potential of +4.5 mV or more under an aqueous solution environment of pH 6 to 8, and a critical scratch resistance of 35 mN or more when vibration 100 μm in amplitude is added to a stylus with a spring constant of 200 g/mm on the surface layer and the stylus is moved at a rate of 10 mm/sec under a load increasing at a rate of 100 mN/min.
摘要:
An artificial bone which is easy to bond to a living bone and has a mechanical property approximate to that of a living bone is disclosed. The artificial bone comprises: a dense part made of titanium or a titanium alloy, in the shape of a frame that is approximate to a part of an outer face of a living bone, having a density of 95% or more; and a porous part made of sintered particles of titanium or a titanium alloy having the same or different composition as the titanium alloy for the dense part, in the shape approximate to the remaining part of the living bone, having a porosity of 40% or more, the dense part and the particles of the porous part being sintered to each other at an interface between the dense part and the porous part.