The present invention relates to a centrifuge for separating dental foreign materials, the centrifuge comprising: a body part of which the top is combined with a top cover and the bottom is combined with a bottom cover to seal an internal space thereof and which is equipped with a mixture inflow path into which mixtures flow, is equipped with a gas outlet path discharging gas, and is equipped with a foreign material outlet path discharging foreign materials including liquid； a separator impeller part which is disposed in the internal space of the body part, has a shaft insertion path receiving a shaft insert therethrough and formed on a central axis inside the internal space, is equipped with a first wing formed at the top and a second wing formed at the bottom, and is equipped with one or more liquid holding protrusion parts therein； a foreign material discharging impeller part which is disposed at the bottom of the separator impeller part, has a central part including a bonding opening formed thereon and extending upwards so as to be inserted into the shaft insertion path, and is equipped with a third wing for discharging foreign materials piled up on the surface thereof； and a bonding member which is disposed at the bottom of the bonding opening, is bonded to the foreign material discharging impeller part and the separator impeller part by a fixing member penetrating the bonding opening, and blocks the inflow of foreign materials to the central part between the foreign material discharging impeller part and the bottom cover.본 발명은 치과 이물질을 분리하는 원심분리장치에 관한 것으로, 상부가 상부커버와 결합하고 하부가 하부커버와 결합하여 내부 공간이 밀폐되고, 혼합물이 유입되는 혼합물 유입로를 구비하며, 기체를 배출하는 기체 배출로를 구비하고, 액체를 포함하는 이물질을 배출하는 이물질 배출로를 구비하는 몸체부를 포함한다. 또한, 몸체부의 내부 공간에 배치되며, 샤프트가 삽입되는 샤프트 삽입로를 내부 공간의 중심축에 형성하며, 상측에 제1 날개를 구비하고 하측에 제2 날개를 구비하며, 내부에 하나 이상의 액체 걸림턱을 구비하는 분리기 임펠러부를 포함한다. 또한, 분리기 임펠러부의 하부에 배치되며, 체결개구가 형성된 중앙부가 상방으로 연장 형성되어 샤프트 삽입로의 내부로 끼움결합하고, 표면에 적층된 이물질 배출을 위한 제3 날개를 구비하는 이물질 배출 임펠러부를 포함한다. 또한, 체결개구의 하부에 배치되며, 체결
