Long-term bone stability assessment around 1,187 immediately placed implants with 1- to 22-year follow-up.

Purpose: To evaluate the retention of bone around implants placed immediately following tooth extraction and used to support dental prostheses.

Materials And Methods: Patients from a previous study of implants placed immediately following tooth extraction were recalled to the original practice to obtain dental radiographs, which were then used to compare bone levels after 1 to 22 years of clinical function supporting dental prostheses. All radiographs were evaluated by measuring the bone within the implant threads.