Basic research—technologyAn Evaluation of GuttaFlow and Gutta-Percha in the Filling of Lateral Grooves and Depressions
Section snippets
Materials and Methods
An extracted human maxillary canine with a single, straight canal was used to make a split-tooth model as previously described (8). The apex was prepared to a .04 taper size #40 at the working length (WL).
The split-tooth model was conditioned in an incubator at 37°C with 100% humidity at all times between obturations. Four experimental groups were included: (1) group 1 = GF − GuttaFlow; (2) group 2 = GP5 − gutta-percha, System B plugger (Analytic Endodontics, Orange, CA) inserted to 5 mm from
Results
Results for the flow of GuttaFlow and gutta-percha into depressions and lateral grooves at 1 mm, 3 mm, 5 mm, and 7 mm from the WL are presented in TABLE 1, TABLE 2, respectively. Representative obturations for GuttaFlow and gutta-percha (System B plugger insertion to 3 mm from the WL) are shown in Figure 1.
Extrusion of GuttaFlow occurred with all obturations. No extrusion of gutta-percha or sealer was seen for any of the gutta-percha experimental groups. GuttaFlow had significantly better flow
Discussion
The purpose of this ex vivo study was to compare the flow of GuttaFlow and gutta-percha into depressions and lateral grooves in the apical half of a split-tooth model. The use of the same split-tooth model for all obturations and monitoring of material placement and compaction forces ensured standardization of each obturation among the four experimental groups. Clinical conditions of temperature and humidity were maintained throughout the experiment.
GuttaFlow flowed into all depressions and
Acknowledgments
The authors would like to thank Coltène/Whaledent Inc and Obtura Spartan for donating the GuttaFlow and gutta-percha pellets that were used in this study. The authors would also like to thank Dr Dave Phillips for providing support with statistical analysis.
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2013, Journal of EndodonticsCitation Excerpt :To focus on defects in the apical third, we used the approach of creating defects in the apical 4-mm area and then taking the heated plugger to the depth of 4 mm short of the WL. Our decision for the plugger depth was supported by a previous study reporting GP flowed significantly better into grooves and depressions at the 1-mm level when the System B plugger was inserted 3 mm from the WL as compared with 4 and 5 mm from WL (16). In the current study, incremental backfill in combination with either continuous or incremental down-pack was able to replicate artificially prepared intracanal defects 3 mm from WL better than either of the continuous backfill protocols.