<prompt> In crown down technique:K file is used without reaming motion pressure.K file is used with a reaming motion and no apical pressure.Both can be done.None of the above.  <response>: Crown-Down Pressureless Technique: This technique was suggested by Marshall and Pappin. Early coronal flaring with Gates-Glidden drills is followed by an incremental removal of dentin from coronal to apical direction, and hence called Crown-down technique. Straight K-files are then used in a large to small sequence with a reaming motion and no apical pressure hence called Pressureless technique. 