Fig. 3
From: Performance of the counter-torque technique in the explantation of nonmobile dental implants
Panoramic radiograph showing excessive marginal bone loss affecting all the dental implants in the mandible supporting fixed prostheses (a). Clinical image showing the advanced bone destruction around the implants at the incisors and left premolar regions (b). Clinical image showing the preservation of the pre-existing bone upon implant removal with the counter-torque regions (c). Panoramic radiograph showing the maintenance at this stage of 3 implants to support the provisional prosthesis in the mandible (d)