| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a dental handpiece which enables obtaining of a mixture of a proper concentration by mixing powder and air in a vessel. SOLUTION: In the dental handpiece 1 which is provided with a vessel 10 for holding powder, an air supply path 22 for supplying air into the vessel, a mixture transfer path 17 for transferring the mixture to an injection nozzle and a water transfer path 16 for transferring water to the injection nozzle and blows the mixture of air and the powder to teeth together with water for dental treatment, the vessel is formed with an interior curved surface to make air turn omnidirectionally inside and the air supply path is divided therein into a plurality of branch pipes 22a and 22b which are extended to near the curved surface at the central area of the vessel. A plurality of ports 23a and 23b is provided at the respective tips of the branch pipes being directed so as to let air flow along the curved surface.</p> |
