A curve to be placed between the patient's lip and the jaw crest for the purpose of providing an occlusal acquisition tool that can adjust the inclination of the instrument appropriately during occlusal acquisition and enable accurate occlusal acquisition. The plate-shaped rear curved surface plate (21) and the plate shape that should be disposed in front of the lips with a predetermined gap so that one plate surface faces the rear curved surface plate A front curved surface plate (25), and the other curved surface of the front curved surface plate is provided with protrusions (26, 27) extending in a predetermined direction. And咬合採得の際に器具の傾きを適切に調整し、正確な咬合採得が可能となる咬合採得用具を提供することを目的とし、患者の口唇と顎堤の間に配置されるべき湾曲した板状の後方側曲面板（２１）と、後方側曲面板に対して一方の板面を対向するように所定の間隙を有して配置され口唇に接して前方に配置されるべき板状の前方側曲面板（２５）と、を有し、前方側曲面板の板面のうち、他方の板面には突出して所定の方向に延びる突条（２６、２７）が設けられているものとする。
