21 September 2016
Cone fit is the first step and a good starting point for a perfect 3D obturation of the root canal system. During this phase, we need: gutta-percha cones, a dedicated caliper and a blade or micro-scissors. Guttapercha cones are available in three different categories:
1) Non Standardized, with 0.20 tip and available in 9 size: x-fine, fine-fine, medium-fine, fine (.06), fine-medium (.08), medium (.10), medium-large (.12), large, extra-large. Fine, F-Medium and Medium are the most used cones. This kind of cones is indicated for Warm Vertical Condensation or System B techniques.
2) Standardized cones have a note tip, from 20 to 1,40 and 0,2 taper, and are usually utilized in lateral condensation.
3) The last category of cones, includes cones that are dedicated to each instrument, for example, dedicated to Protaper Universal, Reciproc or M-Two; this kind of cones is less specific than non-standardized cones in the gutta-percha warm condensation technique, and in the single cone technique.