Figure 7-4.Items and inventory levels of endodontic box kits.
Figure 7-5.Endodontic explorers.
clockwise, rotary action, the cutting edges scrape the
wall and widen the preparation in a reaming action.
K-type root canal files (fig. 7-8) are, size for size,
stiffer and stronger than comparable types of files. The
identification symbol for K-type files is a square.
H-Type.The H-type are tapered and pointed,
with spiral cutting edges arranged so that cutting
occurs principally on the pulling stroke. These files
also know as "Hedstrom" (fig. 7-9) are used to enlarge
the root canal by either a cutting or an abrasive action.
The series of intersecting cones forming the file
become successively larger from the tip toward the
handle. The sharp blades of the H-type files cut more
quickly than reamers or K-files. The H-type files are
frequently used for flaring of the canal from the apical
region to the occlusal or incisal opening. The
identification symbol for H-type files is a circle.