Dental articulator and its transform plate

A dental articulator for use with a dentition plaster model installed between upper and lower jaw frames during the treatment of occlusion of upper an lower dentitions of a patient and during the creation of prosthetics for reproducing an occlusal state, said dental articulator comprising:

• an occlusal plane table for vertically supporting said upper detention and having a slanted table surface with a forward inclination corresponding substantially to that of an occlusal plane in the patient;
• an occlusion analysis plate movably supported by the upper jaw frame and having a plurality of averaged positions established at multiple locations for determining a Spee center and a posterior movement axis which are constitutional elements in the patient, said averaged positions being drawn and paired on both side portions of said plate;
• an incisor guiding plate having opposed slanted surfaces to map the forward, backward, left, and right intercuspal inclinations for reproducing jaw movements in the patient forwardly, backwardly, left and right, and an incisor guiding pin having a tip adapted to slide along said slanted surfaces of incisor guiding plate;
• a conversion plate mounted to a base formed by the lower jaw frame, together with a lower jaw plaster dentition model mounted thereon for operating and reproducing physiological states for the intercuspal positions and the posterior occlusal positions of said patient;
• and
• said incisor guiding pin cooperating with said incisor guiding plate, wherein a physiological occlusion state is reproduced for analysis by allowing a load receiving function and a tractive function to operate in all the directions of movement which correspond to those of the temporomandibular joint function in said patient.