How does the “Hedstroem Displacement Technique” relate to gutta percha removal?
A. An important method to remove gutta percha, especially when the canal has been overextended vertically and underfilled laterally, is to utilize the hedstroem displacement technique. The gutta percha is first thermosoftened with heat and then a 35, 40, or 45 hedstroem file is passively rotated clockwise into this mass. Let the gutta percha cool and harden within the blades, and upon withdrawing the hedstroem file, oftentimes the entire mass of gutta percha will be removed as well.
