A new type of syringe for delivering composite material for direct application of the material in the mouth of a patient. The new type of syringe includes a threaded screw for driving a piston through the syringe in order to extrude the material from the end of the syringe. The extrusion force is thus generated in the syringe, thereby allowing for a simpler, less costly motorised driving system using a torque driving movement. The syringe also includes a localised heating arrangement at the extrusion end.