Immediate one-stage postextraction implant: A human clinical and histologic case report

The placement of an implant immediately after tooth extraction may have the following advantages: reduction in morbidity, treatment time, and treatmen t costs; presentation of the residual ridge width and height; optimal esthe tic result; and easier definition of implant position, The aim of the prese nt study was the presentation of a human clinical and histologic report inv olving a nonsubmerged implant placed in a mandibular postextraction site an d removed because of persistent pain. At low-power magnification, it was po ssible to see that newly formed bone with wide osteocyte lacunae was presen t around the implant A 1.5-mm sulcular epithelium was visible on one side o f the implant, with a 0.5-mm epithelial attachment. The thickness of the su pracrestal connective tissue was 3.2 mm. This connective tissue was dense, had few cells, was well vascularized, and showed no evidence of an inflamma tory infiltrate. Under polarized light, it was possible to observe that the connective fibers were arranged perpendicular to the implant surface and t hat these fibers became parallel near the implant These results show that h uman immediate postextraction implants can have a high percentage of bone-i mplant contact.