Comparison of the obturation with Ultrafil-3D or lateral condensation technique

OBJECTIVES:To observe the apical sealing ability of obturation with Ultrafil-3D system or lateral condensation and the effect of different sealers on the sealing. METHODS:44 single and straight anterior extracted human teeth were removed, the crowns were cut at cementum-enamel conjunction and the canals were instrumented with step-back technique.40 root canals were obturated with Ultrafil-3D system (Group U) or lateral condensation (Group LC) combined with two different sealers (Roekoseal or iodoform sealer). Other 4 teeth were used as control. The digital radiographs were taken from the buccollingual and mesiodistal views. All teeth were dyed in 2% methyl blue for 5 days and then were split into two parts longitudinally . The linear length of dying were measured. SAS6.04 statistical software was used for analysis. RESULTS: 1)Group U achieved significantly worse scores of radiographic quality than that of group LC (P<0.01). 2) The sealability of obturation combined with Roekoseal was better than with iodoform sealer when the same obturation method was used (P<0.01). 3) There was not significant difference for the apical leakage between Ultrafil-3D system and lateral condensation when the same sealer was applied (P>0.05). CONCLUSIONS:The apical leakage of the obturation with Ultrafil-3D system was lower than that of the lateral condensation. Roekoseal sealer could significantly reduce the microleakage.