PROBLEM TO BE SOLVED: To provide an implant material capable of being stabilized for a long period of time by improving the initial fixing power.SOLUTION: The implant material is an implant material having a hole approximately parallel to a principal vector of stress of biological apatite, wherein the hole is unidirectional. The hole is made of latticed mesh. The mesh is made of titanium, titanium alloy, cobalt chrome alloy, tantalum, or stainless steel.