结论声波器械和手用器械的联合应用，有助于提高根管预备的效果。
Conclusion the combined application of sonic and hand file instrumentation was conduced to improve the effect of root canal preparation.
结论声波器械和手用器械的联合应用，有助于提高根管预备的效果。
Conclusion the combined application of sonic and hand file instrumentation was conduced to improve the effect of root canal preparation.
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