| 摘要 |
A dental syringe for the controlled injection of air and water into a patient's mouth that effectively prevents the spread of contamination from patient to patient during the performance of dental procedures. The syringe comprises a one,piece, combination dispensing tip, head portion and handle portion that is constructed of plastic so that it can be disposed of after use. The air operated valves that control the flow of water and air through the dispensing tip are remotely located from the dispensing head so that they are not exposed to contamination during the performance of the dental procedure. The control valves of the apparatus can be easily operated by the thumb of the operator in a manner to effortlessly and precisely control the flow of air and water through the dispensing tip.
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