Fig. 1

Img. 1 - This image demonstrates a nano synthetic, multi-tapered, system-based GPMC that has a rate of taper less than the final preparation and is snug only at length.

gutta percha master cone fit
Fig. 2

Img. 2 - A µCT image of a mandibular bicuspid (courtesy of Dr. Frank Paque; Zurich, Switzerland). A post-operative film demonstrates similar complex anatomy.

Fig. 3

Img. 3a - The Calamus Pack handpiece (Dentsply Sirona) utilizes a pre-selected Electric Heat Plugger (EHP) to thermosoften and condense gutta percha.

Fig. 4

Img. 3b - The Calamus Flow handpiece (Dentsply Sirona) may be utilized to dispense thermosoftened gutta percha through variably gauged canulas.

Fig. 5

Img. 4 - This image demonstrates a long-standing hand rolling method utilized to fabricate a GPMC.

gutta percha master cone fit
Fig. 6

Img. 5 - Fixed-tapered GPMCs with loose tolerances oftentimes bind in the body of the canal, fit loose at length, and clinically exhibit false apical tugback.

gutta percha master cone fit
Fig. 7

Img. 6 - Traditional fixed-tapered GPMCs exhibit considerable deficiencies in sizing, clinically contributing to unpredictable cone fit.

Fig. 8

Img. 7a - Upon activation, an EHP plunges into the body of a GPMC, and sends a thermosoftened heat wave to the apical extent of this cone.

Fig. 9

Img. 7b - Upon deactivation, the cooling EHP is removed, along with a “bite” of gutta percha. This cycle serves to promote an apical wave of condensation.

Fig. 10

Img. 7c - A pre-fit plugger compacts warm gutta percha into this region of the root canal system and presses on the cooling mass to offset shrinkage.

gutta percha master cone fit
Fig. 11

Img. 8 - Electro-discharge machining is utilized to make precision mold cavities, which, in turn, produce GPMCs with super tight tolerances of ±0.02 mm.

gutta percha master cone fit
Fig. 12

Img. 9 - The new nano synthetic system-based GPMCs are multi-tapered and superbly sized to match the largest shaping file carried to length.

Fig. 13

Img. 10 - A post-treatment image of these mandibular bicuspids demonstrates filling complex root canal systems that exhibit multiple apical portals of exit.

Fig. 14

Img. 11 - This radiograph demonstrates endodontically prepared canals exhibiting multiplanar shapes, and a filled furcal canal and multiple apical portals of exit.


Albert Einstein said, We can't solve problems by using the same kind of thinking we used when we created them.
Now, due to imagination, critical thinking, and recent technological breakthroughs, system-based endodontics is no longer just a concept; rather, system-based endodontics has now become a clinical reality. In the immediate future, there will be an unprecedented endodontic awakening and transformation with the emergence of new technologies that can truly both 3D disinfect and fill root canal systems. Regarding this future, there is an old expression, Whatever you thought, think again.”


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Schilder H: Filling root canals in three dimensions, Dent Clin North Am pp. 723-744, November 1967.
Marlin J, Schilder H: Physical properties of gutta percha when subjected to heat and vertical condensation, Oral Surg Oral Med Oral Pathol 36:3, pp. 872-879, December 1973.
Goodman A, Schilder H, Aldrich W: The thermomechanical properties of gutta-percha. II. The history and molecular chemistry of gutta-percha, Oral Surg Oral Med Oral Pathol 37:6, pp. 954-961, June 1974.
Goodman A, Schilder H, Aldrich W: The thermomechanical properties of gutta-percha. IV. A thermal profile of the warm gutta-percha packing procedure, Oral Surg Oral Med Oral Pathol 51:5, pp. 544-551, May 1981.
Ruddle, CJ: An in vitro scanning electron microscope study of the warm gutta percha with vertical condensation technique, Thesis, Harvard School of Dental Medicine, 1976.
Ruddle CJ: Ch. 9, Three-dimensional obturation: the rationale and application of warm gutta percha with vertical condensation. In Pathways of the Pulp, 6th ed., Cohen S, Burns RC, eds., St. Louis: Mosby Yearbook Co., 1994.