Comparación in vitro de la microfiltración corono-apical del Enterococcus faecalis con tres diferentes técnicas de obturación: lateral, vertical y de vástago, en premolares unirradiculares

The purpose of this study was to compare leakage of Enterococcus faecalis in three filling techniques: lateral condensation, vertical condensation and gutta-percha carrier-based obturation. Forty single-root premolars were decoronated and prepared until Reciproc R50. A modified Torabinejad model was used consisting of a split chamber where E. faecalis was placed in the upper chamber could reach the lower chamber only through the filled canal. The Kruskal-Wallis test showed that core-carrier gutta-percha obturation and vertical obturation groups were statistically superior to lateral obturation group. No statistically significant difference was found between the lateral obturation and positive control, nor between core-carrier technique and vertical obturation (p > 0.05). In conclusion, core-carrier gutta-percha obturation group showed greater resistance to filtration of E. faecalis but it was not statistically superior to vertical condensation group.