| 摘要 |
Dental instrument for use with an interdental wedge, wherein the latter has a base with an interdental wedge portion extending from the base in one direction and a quadrilateral projection extending in the opposite direction, the instrument having a pair of operating handles swingably secured together for opening and closing movements, each handle being provided with a wedge-grasping jaw, and the two jaws being formed with registering recesses located to fit over and grasp the quadrilateral projection so that the interdental wedge portion may be pushed between adjacent teeth of a patient to force a looped matrix band against the axial contour of a previously banded tooth.
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