Procedure for creating a physical tooth model, comprising: providing a virtual three-dimensional (3D) image of the dentition of a patient or part thereof； and preparing a physical model of the jaws, based on information from said virtual 3D image, in which said physical model is a positive model or a negative model from which a positive model can be produced, said model comprising two elements (100 , 102； 120, 122), one representing the upper jaw and the other the lower jaw, and both elements are produced with markings or an alignment arrangement to allow adequate occlusion alignment of the two elements of said positive model, in the that the alignment arrangement includes a mounting arrangement for mounting said elements in an articulator (104), in which, before preparing said two elements (100, 102； 120, 122), the virtual 3D image is virtually combined with a articulator (104) to define parts of coupling to the articulator of said elements； or in which the alignment arrangement includes one or more alignment reference components (124R, 126R) in each of the elements of the model, the components corresponding to each other corresponding so that each component in one of said elements it can be aligned to adjust with the corresponding component in the other of said elements to produce an appropriate alignment of the two elements, in which, before preparing said two elements (100, 102； 120, 122), said one or more components of Alignment reference (124R, 126R) occur virtually.Procedimiento para crear un modelo de dientes físico, que comprende: proporcionar una imagen tridimensional (3D) virtual de la dentición de un paciente o parte de la misma； y preparar un modelo físico de las mandíbulas, en base a información de dicha imagen 3D virtual, en el que dicho modelo físico es un modelo positivo o un modelo negativo a partir del cual puede producirse un modelo positivo, comprendiendo dicho modelo dos elementos (100, 102； 120, 122), uno representando la mandíbula superior y
