Fig. 2
From: Porous titanium granules in the treatment of peri-implant osseous defects—a 7-year follow-up study

PTG observed in radiographs at the 8-year follow-up
From: Porous titanium granules in the treatment of peri-implant osseous defects—a 7-year follow-up study
PTG observed in radiographs at the 8-year follow-up