To lose teeth and be obliged to use removable prostheses might impact dramatically on your everyday activities. Prosthodontics is aiming to enable the patients to eat whatever they like, but also to make them feel socially comfortable with artificial teeth. However, there is an individual diversity which makes it impossible to assess the impact of tooth loss without concern for individual attributes. The aim of this thesis was to study the impact of oral prostheses on oral health- related quality of life (OHRQOL). Additional aims were to study social inequalities in oral health, attitudes...