The present invention relates to a dental sand blast operating lever. More specifically, to improve adhesive force by covering a prosthesis to the outside of teeth during tooth treatment, powder is sprayed to the inner surface of the prosthesis by air to fix an operating lever such that a coarse operation can be performed on the inner surface of the prosthesis for a long time. A lifting lever is provided so as to ascend up and down by a spring in a lever tool. A sliding groove in a horizontal direction is formed on an upper portion of the lifting lever. A reciprocating lever moving along a sliding groove is provided to be fitted to and separated from a hanging groove. A stop hole is formed in a lower portion of a body of a pressing hole, and an air pipe can be opened and closed by the pressing hole formed at the lower part of the lifting lever. An operator can push the reciprocating lever while pressing the lifting lever to fit and fix the reciprocating lever to the hanging groove of the lever tool, and thus the operator can continuously spray air and powder without continuously pressing the lifting lever. Therefore, air and powder can be uniformly sprayed onto the inner surface of a prosthesis. According to the present invention, it is possible to solve a conventional difficult problem in which an operator should evenly spray powder and air in a desired direction while continuously pressing a lifting lever. Also, the present invention has an advantage of improving workability by reducing fatigue of an operator even if the inner surface of one or more prostheses is continuously operated.본 발명은 치과용 샌드브라이트 작동레버에 관한 것으로, 좀더 상세하게는 이빨 치료시 이빨 외부로 보철물을 덮어 접착력을 높이기 위해 보철물의 내면에 파우더를 에어로 분사시켜 파우더에 의해 보철물의 내면을 장시간 거칠게 작업가능케 작동레버를 고정하도록 하기 위해,레버구의 내부에서 스프링에 의해 상,하로 승강되는 승강레버를 마련하되 승강레버의 상부에 가로방향의 슬라이딩홈을 형성하여 슬이딩홈을 따라 이동하는 왕복레버를 마련하여 걸홈에 끼움 및 분리하도록 하고 누름구의 하부에는 스톱공을 몸체에 형성하여 승강레버의 하부에 형성된 누름구에 의해 에어관을 개폐가능케 하여, 작업자가 승강레버를 누른 상태에서 왕복레버를 밀어 왕복레버를 레버구의 걸홈에 끼워 고정가능케 하여 작업자가 승강레버를 계
