Cross-sectional analysis that will include consecutive patients with dental implants (> 250) with at least 36 months depending upon placement of the prosthesis. a cross-sectional study calling patients to whom implants have placed them in two private practices (CICOM, Badajoz and Nart Clinica Dental, Barcelona, Spain) in the last 36 month to conduct clinical and radiographic study was performed. This procedure is justified because of the high frequency of peri-implant disease (30%) and since there is no predictable and effective treatment, only prevention can improve the success rate and functionality.