Update on the Roles of Oral Hygiene and Plaque Control on Periodontal Disease

to provide an update of the evidence on the effect of oral hygiene instructions (OHI), dental plaque control and in the prevention and treatment of periodontitis.Literature searches were performed using MeSH terms, keywords and free words and were published between 2015 and November 2020. The data from the articles were summarized in a narrative review.Data concerning the influence of OHI on periodontal features, the impact of OHI before periodontitis non-surgical treatment, its efficacity on periodontitis prevention and maintenance of healthy periodontium were summarized in the tables of the present narrative review.as prevention is better than a cure, it is relevant to bring in light the role of oral hygiene instructions, the patient self-control of dental plaque as well as the professional mechanical plaque removal in the prevention of periodontitis.