The present invention relates to a dental model articulator. The present invention comprises: a lower frame which has a support arm having a hinge member corresponding to both sides, and a lower support part at the center； an upper frame which has a connection part which is rotatably connected to the hinge member of the support arm of the lower frame and an upper support part formed in the center of the connection part； a lower jaw installation plate connected to the upper surface of the lower support part of the lower frame； an upper jaw installation plate connected to the lower surface of the upper support part of the upper frame； a support bar installed at the front end of the upper support part of the upper frame； and a movable device part which forms an operation hole at the rear surface of the upper frame and is installed at the operation hole to move the lower frame forward and backward by interacting with the support arm of the lower frame. As described above, the present invention has a movable device part which forms an operation hole at the rear surface of the upper frame and is installed at the operation hole to move the lower frame forward and backward by interacting with the hinge member of the support arm of the lower frame, thereby ensuring accurate orthodontic treatment by using a dental model articulator in frontward/backward and leftward/rightward, and especially, during orthodontic treatment, being capable of sliding forward/backward, as a whole, the lower frame to which the lower jaw installation plate is installed so as to implement masticatory movement more accurately and thus provide dental prosthesis corresponding to human teeth more safely and accurately.본 발명은 치아교합기에 관한 것으로서, 상기 목적을 달성하기 위한 본 발명은 양측으로 상호 대응되는 힌지부재가 구비된 지지아암이 형성되고, 중앙에 하부받침부가 형성된 하부프레임과, 상기 하부프레임의 지지아암의 힌지부재에 회전 가능하게 결합되는 연결부 및 상기 연결부 중앙에 형성된 상부받침부가 형성된 상부프레임과, 상기 하부프레임의 하부받침부 상면으로 결합되는 하악설치판과, 상기 상부프레임의 상부받침부 저면으로 결합되는 상악설치판과, 상기 상부프레임의 상부받침부 선단부에 설치된 지지바와, 상기 상부프레임의 배면부
