| 摘要 |
A dental instrument composed of a substantially flat plate member, e.g., a mirror, and a saliva ejector consisting of a tubular member attached at one end to a suction line and at the other end to a plate which can act as the mirror and which has peripheral portions which define, in association with a removable resilient member, a channel connected to the suction line. The resilient member contains perforations through which the saliva and other liquids in the oral cavity pass from the mouth through the channel and to the suction line.
|
