The root canal system is first prepared and then dried. A spiral root canal filler is selected and passively tried in the canal. It must be a loose fit in the canal over its entire length, or fracture may occur, as seen in Figure 2. The working length of the canal should be marked on the shank with either marking paste or a rubber stop. The author prefers the blade type of filler as these are less prone to fracture. The paste of choice is spread evenly on the shank.
The spiral filler is inserted into the canal and wiped around the walls to reduce air bubble formation. Using a standard handpiece with low rpm, the root canal is filled with paste. Several applications may be required. A large paper point may be used to condense the material into the canal, and this will also absorb
excess moisture. A pledget of cotton wool is pressed into the pulp chamber so that the paste is condensed further and the access cavity sealed.