Spray shield
    3.
    发明授权
    Spray shield 失效
    喷屏

    公开(公告)号:US4850868A

    公开(公告)日:1989-07-25

    申请号:US72471

    申请日:1987-07-13

    IPC分类号: A61C1/08 A61C3/025 A61C17/02

    CPC分类号: A61C3/025 A61C17/0202

    摘要: The apparatus comprises a tubular member that is adapted to be attached to the working end of a dental handpiece and is used to contain and direct material dispensed from the handpiece in order to reduce the amount of airborne particles emitted into the atmosphere by the handpiece and to accurately direct the dispensed material to the desired area. The apparatus is adapted to provide a reference point for the practitioner in establishing the optimum working distance of the handpiece from a particular working area in the mouth when the handpiece is used. An improved dental handpiece using the apparatus of the invention and a method of using the apparatus are also provided.