A restorable one piece implant includes an implant root having a bottom coarse thread portion for mounting in the gum of a patient and a top fine thread portion at the top side of the bottom coarse thread portion, an abutment formed integral with the top end of the top fine thread portion of the implant root for the mounting of a crown, and a through hole extending vertically downwardly from the topmost edge of the abutment into the implant root to a predetermined depth above the bottom end of the bottom coarse thread portion of the implant root such that when the abutment breaks accidentally or after a long use, the through hole provides a space for the application of post and core technology to embed a post in the broken abutment in restoring the abutment.
