The present invention relates to an internal hole filler of an abutment for implant, which includes first polytetrafluoroethylene (first PTFE) and second polytetrafluoroethylene (second PTFE), wherein tensile strength measured after sintering the first PTFE is in a range of 20 MPa or more to less than 28 MPa, and tensile strength measured after sintering the second PTFE is 28 MPa or more, and a method of filling an internal hole of the abutment for implant.
