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  Indian J Med Microbiol
 

Figure 9: Irrigation to the working length with no extrusion. An experimental setup: (a) The canal is prepared with a #20 K file to a working length 1 mm short of the apex. Patency is verified with a #15 K file. (b) The SAF System was used for 4 min with pecking motions that reach the WL at 5000 vibrations per min. No passage of irrigant beyond the apex occurred. (c) Syringe and needle irrigation of the same canal, after the SAF operation. Although the needle is far from the WL and free in the canal, the irrigant passes freely due to the pressure created by the stream of irrigant emerging from the needle

Figure 9: Irrigation to the working length with no extrusion. An experimental setup: (a) The canal is prepared with a #20 K file to a working length 1 mm short of the apex. Patency is verified with a #15 K file. (b) The SAF System was used for 4 min with pecking motions that reach the WL at 5000 vibrations per min. No passage of irrigant beyond the apex occurred. (c) Syringe and needle irrigation of the same canal, after the SAF operation. Although the needle is far from the WL and free in the canal, the irrigant passes freely due to
the pressure created by the stream of irrigant emerging from the needle