The invention relates to a ceramic implant, especially a dental implant, comprising a structured or porous surface for at least partially inserting into a bone. An especially advantageous surface is obtained when it is at least partially modified by a salt melt. These excellent osteointegration properties can be obtained by a method whereby the surface is modified in a salt melt at least in the regions exposed to the bones and/or soft tissue, optionally following a previous modification of the surface whereby material has been removed.