Abstract: Provided is a means for fixing calcium phosphate onto the surface of a metal by a treatment method which uses no acid and produces less residue. A method of producing a calcium phosphate composite in which calcium phosphate is bonded to the surface of a base material, the method including a surface treatment step of bringing the surface of the base material into contact with a surface treating agent, and then into contact with a silane coupling agent, to surface treat the base material; a polymerization step of initiating, after the surface treatment step, polymerization of the silane coupling agent by means of a polymerization initiator; and a bonding step of bonding the silane coupling agent at the surface of the base material after the polymerization step, with calcium phosphate; wherein the base material is a metal, and the surface treating agent is ozone water.

Abstract: Provided is a tooth surface repairing material which can produce an effect in a short time while preventing fine particles from shedding. The tooth surface repairing material contains fine calcium phosphate particles, and is characterized in that the fine calcium phosphate particles are highly crystalline sintered calcium phosphate and have an average particle diameter in the range of 20-100 nm.