Articulator comprising: an upper section (1) and a lower section (2), said upper section (1) a first clamping portion (5) arranged to hold a model of at least a portion of an upper dental structure ( 15) and including a first positioning device (3), said lower section (2) a second holding part (6) arranged to hold a model of at least a portion of a lower dental structure (16) and including a second device placement (4), allowing said first and second positioning devices (3, 4) proper placement and mobility of such models (15, 16) for testing interfit between them, by having surfaces ( 30, 40) of said first and second positioning devices (3, 4) in direct contact with each other and characterized by further comprising at least one male / device female having at least one element (7 7 7 ") that projecting from or near one of said surfaces (30, 40) and a corresponding recess (8 8 8 ") near or in the other of said surfaces (30, 40), wherein said male / female device is in the form of at least two separate discrete elements (7, 8 7 , 8 7", 8 " ) arranged near or on such surfaces, where the size and position of said projecting elements (7, 7 , 7 ") and recesses (8, 8, 8"), respectively, are arranged to form a gap ( t) that is in the range of 0-1 mm between the side walls (70, 80) of each of said projecting elements (7, 7 , 7 ") and recesses (8, 8, 8"), respectively when said surfaces (30, 40) are in contact.Articulador, que comprende: una sección superior (1) y una sección inferior (2), incluyendo dicha sección superior (1) una primera parte de sujeción (5) dispuesta para sujetar un modelo de al menos una parte de una estructura dental superior (15) y que incluye un primer dispositivo de colocación (3), incluyendo dicha sección inferior (2) una segunda parte de sujeción (6) dispuesta para sujetar un modelo de al menos una parte de una estructura dental inferior (16) y que incluye un segundo dispositivo de colocación (4), permitiendo dichos primer y segundo dispositivos d