A literature search of MEDLINE (PubMed) and The Cochrane Library up to and including July 31, 2016, was carried out using the search strategy (peri‐implant[All Fields] AND (“mucositis”[MeSH Terms] OR “mucositis”[All Fields])) OR (periimplant[All Fields] AND mucositis[All Fields]), resulting in 224 papers. Prospective, retrospective, and cross‐sectional studies and review papers focused on risk factors/indicators for peri‐implant mucositis as well as experimental peri‐implant mucositis studies in animals and humans were included. Following discussion, the current authors agreed on the studies to be included in this narrative review based on their relevance to the questions, outlined above, addressing the topic of peri‐implant mucositis.