| 摘要 |
<p>This device is made in a single piece comprising, on the one hand a narrow and elongated shaft (10) capable of passing between the teeth, the material from which the device is made being a mouldable plastic whose properties of stiffness strength eliminate buckling and breakage of the shaft when it is pushed longitudinally between the teeth, and on the other hand a grasping component (12) arranged at one end of the shaft, asymmetrically with respect to its axis, the shaft (10) possessing three elongated faces, two of which are serrated and cut the third face so as to form a serrated longitudinal ridge opposite each of the serrated faces. <IMAGE></p> |
