In tip assembly for use with a dental tool, a housing for attachment to a dental tool, a suction needle of at least one, by substantially the length of the aspiration needle, or other from at least one end of the aspirating needle to the edge, at least partially through extending passage aspirating needle, passage, and a suction needle that provides a single continuous path for sucking the cleaning water and / or debris from the root canal cavity of the tooth, a cleaning needles at least one, by substantially the length of the cleaning needle, or from at least one end of the cleaning needle to the other end, the cleaning needle at least partially through extending passage, passage, washed needle to the distal end of the cleaning needle from a proximal end in communication with the reservoir, and including a cleaning needle to provide a continuous flow path for delivering fluid / cleaning water into the root canal / crown opening portion of the tooth.歯科用ツールと共に使用する先端アセンブリにおいて、歯科用ツールに取り付けるためのハウジングと、少なくとも1本の吸引針であって、吸引針の実質的長さだけ、または吸引針の少なくとも一端から他端へ、吸引針を少なくとも部分的に通って延びる通路を有し、通路が、歯の根管腔から洗浄水および/または破片を吸引するための単一の連続経路を提供する吸引針と、少なくとも1本の洗浄針であって、洗浄針の実質的長さだけ、または洗浄針の少なくとも一端から他端へ、洗浄針を少なくとも部分的に通って延びる通路を有し、通路が、洗浄針の近位端と連通するリザーバから洗浄針の遠位端へ、かつ歯の根管/歯冠開口部内へ流体/洗浄水を送達するための連続流路を提供する洗浄針とを含む。