Since the use of dental implants is continuously increasing, it is imperative for dental practitioners to understand the nature and treatment of peri-implant diseases. Considering the significant role of implants in contemporary dentistry, practitioners must be able to acknowledge and anticipate the clinical signs and the appropriate treatment measures for peri-implant disease. The book aims to provide an overview of peri-implantitis, outlining its prevalence, etiology, risk factors, diagnosis, and management for the general practitioner.