People with serious mental illness experience an erosion of functioning in day-to-day life over a protracted period of time. There is also evidence to suggest that people with serious mental illness have a greater risk of experiencing oral disease and have greater oral treatment needs than the general population. However, oral health has never been seen as a priority in people suffering with serious mental illness. Poor oral health has a serious impact on quality of life, everyday functioning, social inclusion and self-esteem. We feel that oral healthcare advice could have a positive impact on this disadvantaged population.