The use of dental implants in replacing missing teeth is proven to be a valid treatment with a high success rate. To achieve the best treatment outcome in all implant systems, the implant has to be able to integrate with the surrounding tissue. However, dental implants are affected by peri-implant diseases and may fail as a result. As the number of implants placed continues to increase, the prevalence of peri-implant disease will also increase. This requires preventive measures to inhibit the development of the disease and stop its progression. Clinical Relevance: Understanding how to maintain healthy peri-implant tissue as well as diagnosis and treatment of disease are vital for every dentist and dental student.