Hydroxyapatite particulate
AssigneeShiraishi Kogyo Kaisha, Ltd.
InventorsKohei KISHI, Shota UMEMOTO
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Abstract
An object is to provide a particle that has properties to seal dentinal tubules, and that exhibits excellent adhesion in dentinal tubules. The object is achieved by a fine hydroxyapatite particle that has a ratio of the diffraction peak intensity around 2θ=32° to the diffraction peak intensity around 2θ=26° of 0.8 to 1.6 in an X-ray diffraction pattern as measured by using CuKα radiation, and that is an aggregate of particles.
Claims12
A fine hydroxyapatite particle having a ratio of a diffraction peak intensity around 2θ=32° to a diffraction peak intensity around 2θ=26° of 0.8 to 1.6 in an X-ray diffraction pattern as measured by using CuKα radiation, the fine hydroxyapatite particle being an aggregate of particles.
A method for producing a fine hydroxyapatite particle, comprising mixing an aqueous alkaline phosphate solution with a pH of 4 or more and less than 7 with a calcium hydroxide slurry to react the mixture at 35 to 85° C.
Dependencies are inferred from the claim text.