Root Canal Preparation - DENTAL BOOKS

Root Canal Preparation

The diagram above graphically indicates all of the steps required to prepare a root canal using the “Step-Back” technique after the canals have already been located and sized.  It illustrates the use of Stainless Steel files to prepare the apical portion of the canal, and Gates Glidden Drills to prepare the coronal portion of the canal.
*  The first step-back file is one size larger and one mm shorter than the MAF
*  Successive files are one size larger and 0.5mm shorter than the preceding file