Long-term obturation quality using noninstrumentation technology

The aim of the study was to evaluate and compare the sealing quality of han d- or vacuum-obturated root canals after hand instrumentation or noninstrum entation cleansing. A total of 60 single-rooted teeth were divided into six comparable groups. The root canals of three groups were instrumented with the balanced-force technique and obturated with gutta-percha condensation. The remaining teeth were cleansed and filled using noninstrumentation techn ology and the same sealers as with hand instrumentation (AH Plus, Apexit, P ulp canal sealer EWT). After aging the quality of coronal seal was assessed with a dye penetration method after perfusion with the dye under vacuum. T he results of this study indicated superior sealing of the machine-filled r oots (noninstrumentation technology), compared with laterally condensed con ventionally filled root canals.