This devise is removable for easy needle and syringe in about as provided for dental, especially once the first 1 concluded that the syringe body is formed The other end is coupled with the plunger of the syringe body Injection needle and the liquid medicament to be injected on the lower side of the needle body and the needles on the upper side of the needle body is formed, and the needle is formed in the second fastening portion is fastened to the first fastening portion of the syringe body on the inside of the needle body Cartridge is housed in the syringe body according to the dental syringe composed of a, the first plurality to the first fastening bolt tab portion outer surface of the syringe body is formed, each of the first tab, the bolt fastening start point of the first are formed radially relative to the center portion, is formed such that symmetrical, the second bolt so that this tab is in the form corresponding to the second fastening portion engaged with the first fastening portion of the syringe body of the needle is formed, respectively. Forming a plurality of bolt fastening portions of the fastening tab to the second portions of the first body connection part and the needle of the syringe body, according to the subject innovation as described above, and, relative to the locking and releasing of the needle and the syringe body, by reducing the length of the bolt tab If you want to provide convenience to physicians in one direction or the reverse direction by rotating the locking and releasing even if only half or one rotation to allow rotation and injuries and infections can be prevented medical personnel.본 고안은 착탈이 용이한 니들을 구비하는 치과용 주사기에 관한 것으로서, 특히 일단에 제 1체결부가 형성되는 주사기 본체와 상기 주사기 본체의 타단과 결합되는 플런저와 니들 본체의 하측에 약액이 주입되는 주입 바늘과, 상기 니들 본체의 상측에 주사 바늘이 형성되며, 상기 니들 본체의 내측에 주사기 본체의 제 1체결부에 체결되는 제 2체결부가 형성되는 니들과 상기 주사기 본체에 수납되는 카트리지로 이루어지는 치과용 주사기에 있어서, 상기 주사기 본체의 제 1체결부는 외측면에 복수로 제 1볼트탭이 각각 형성되고, 각각의 제 1볼트탭 시작점이 상기 제 1체결부의 중심점을 기준으로 방사상으로 형성되되, 상호 대칭되도록 형성되며, 상
