| 摘要 |
A dental instrument for removing saliva from a patient's mouth is disclosed that includes a pair of tubes configured to be operatively positioned within the patient's mouth to support a pair of absorbent rolls at the sides of alveolar ridge. One of the tubes terminates at its proximal end in a suction adaptor having a sealing face for contact interface with a suction tube connected to a dental suction device. The proximal end of the other of the tubes intersects the first tube at its mid-length. An absorbent roll supporting perforated stem is removably inserted into the distal end of each of the tubes. Each stem includes a number of apertures in fluid communication with the passageways through the pair of tubes so that suction applied at the suction adapter operates through the apertures to remove fluid absorbed by the absorbent rolls. An adjustable clamping structure is connected to one of the tubes and is mountable under the jaw of the patient to support the instrument. In one specific embodiment, the absorbent rolls carried by the instrument are composed of a single layer of polyurethane foam. In another embodiment, the instrument is composed of a resilient plastic material to permit flexing of the instrument as the patient moves without disturbing the proper positioning of the instrument about the alveolar ridge. An absorbent roll is disclosed for use with the dental instrument that is composed essentially of a single layer of synthetic sponge or foam material.
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