| 摘要 |
A cartridge (1) contains dental material and at one end has a discharge nozzle (2) and at the other end is connected fixedly in terms of rotation to a nut (3) having an internal thread. A plunger is disposed at the end of a spindle ( 4) in the cartridge, for ejecting the dental material from the nozzle (2). A handle (6) is connected fixedly in terms of rotation to the spindle. The handle (6) and grip part (8) thereof are grasped in the lower portion of the hand, while the thumb and forefinger rotate the cartridge relative to the spindle to discharge the material. |
