A method of making a prosthodontics device such as an inlay or onlay for tooth fillings or restoration comprises assessing a cavity 4,22 of a tooth 2,20 which is to be provided with the inlay 6 with flat shapeless surface 8 or the onlay 24 with cusps 26 and making an inlay or onlay from a polymeric material such as polyetheretherketone (PEEK)which is shaped to fit within the cavity and adhesively secured within the cavity.
