| 摘要 |
A system for irrigating a tooth root canal having a manually manipulatible tubular hand piece assembly that includes an ultrasonic generator and a removable angular tubular body terminating in an injection needle dimensioned and configured for insertion into a tooth root canal and a pressure source of irrigation fluid connected to the tubular hand piece, the irrigation fluid having ultrasonic energy imposed thereon as it passes through the hand piece angular tubular body and injection needle into a tooth root canal.
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