The concept of quality of life is closely related to self-perception. Self-perception of health is useful because it allows for the interpretation of the impact of everyday experiences and day-to-day life.1
1. Barbosa do Vale, E., da Cruz Gouveia Mendes, A., & da Silveira Moreira, R. Self-perceived oral health among adults in Northeastern Brazil. Rev. Saude Publica 2013 47(suppl 3): 1-11.