Die Erfindung betrifft ein Verfahren und eine Anordnung zur Festlegung der korrekten Position eines Unterkiefermodells bezüglich eines Oberkiefermodells für Simulationen der Kiefergelenksbewegung in einem Artikulator.The method involves setting the upper jaw model (3) and the lower jaw model (5) with plastic walls in patients (P), and working for setting a biting plane. The bite fork (7,9) is temporarily fixed with a sliding element, a counter bearing plate and a secondary positioning marker assembly of the wireless position determining system at the upper jaw model. The correct position of the lower jaw model is set against the upper jaw model by applying averaging algorithm during the preset jaw movement, and a position data set is provided. The bite fork or the position marking part is removed from the upper jaw model and the lower jaw model. The upper jaw model and lower jaw model are assembled in correct position in the articulator with position setting units, which are set based on the position data set. Independent claims are included for the following: (1) a bite fork for use in setting correct position of a lower jaw model corresponding to an upper jaw model and (2) an arrangement for setting correct position of a lower jaw model corresponding to an upper jaw model for simulation of jaw joint movement in an articulator in edentulous patients.