An articulator comprising a mandibular portion (100) provided for fixing a mandibular model and a maxillary portion (200) rotatably coupled to the mandibular portion (100) is provided for fixing the maxillary model. In the articulator, the maxillary part 200 includes a maxillary attachment part 220 to which an maxillary model is attached, a shaft bundle 221 protruding from both sides of the proximal end of the maxillary attachment part 220, and the shaft bundle It has a cross section smaller than the cross section of 221 and integrally includes a pair of shafts 222 extending laterally from the front end of the shaft bundle 221, and the mandibular portion 100 is the pair of It is provided to support the shaft 222 and connects a pair of support portions 122 to allow rotation of the maxillary attachment portion 220 in a space between them and an upper end of the pair of support portions 122 The connecting portion 123 and a pair of engaging portions 124 protruding upward from the lower end of the pair of supporting portions 122 to form a shaft engaging structure together with the supporting portion 122, and A pair of pillars 126 extending downward from the bottom joining point of the locking portion 124 and the supporting portion 122 And, includes a mandibular attachment portion 120 connected to the lower end of the pair of pillars 126, the shaft 222 is supported on the locking portion 124 in a state supported on the supporting portion 122 The elastic unit 140 installed on the connecting portion 123 elastically presses the proximal end surface of the maxillary attachment portion 220, thereby bringing the shaft 222 into close contact with the locking portion 124. , The support portion 122 is approximately vertically upward from the front end of the support surface portion 1221 and the support surface portion 1221 of a 0 to 3 degree inclination extending a predetermined distance from the point where the engaging portion 124 meets It includes an extended stop surface porti
