Comparative Evaluation of Endovac and Conventional Irrigating Syringe on Apical Extrusion in Primary Molars. An in vitro Study.

OBJECTIVES: The present study was undertaken to evaluate and compare the apical extrusion of irrigant and depth of irrigant penetration into dentine using the EndoVac irrigating system and manual irrigation system in primary molar teeth.

STUDY DESIGN: Twenty five extracted primary molars satisfying the inclusion and exclusion criteria were divided into two groups with 29 roots in each group with an equal distribution of apical foramen area. The teeth were mounted in pre-weighed glass bottles and the canals were irrigated with 5.25% sodium hypochlorite solution mixed with acid fuchsin using either of irrigating systems according to the group ascertained. The amount of irrigant extruded was recorded. The roots were sectioned at two mm, four mm and six mm from the apex and examined under a stereomicroscope for depth of irrigant penetration.

RESULTS: Apical extrusion of the irrigant solution was significantly less with the EndoVac system (1.18±1.04) when compared with the manual irrigation system (2.3±1.55) (P=0.002)*. Results showed that greater irrigant penetration was achieved using the EndoVac irrigation system compared to the manual irrigation system (P= 0.000)*. With both the irrigation systems, the depth of irrigant penetration was better in the six mm sections followed by the four mm sections and two mm sections (P=0.000)*.

CONCLUSION: The EndoVac irrigation system demonstrated better efficacy compared to manual irrigation system with less apical extrusion and better depth of irrigant penetration into dentine.