Objective: This study is an in vitro evaluation of three-dimensional root canal sealing ability of three obturation techniques: Lateral condensation, Tagger’s hybrid technique and thermoplastic Beefill 2 in 1 in mandible teeth. Methodology: it was used 30 first lower premolars which were randomly divided into three groups of 10 each. Root canals were cleaned, disinfected and shaping. The groups of Lateral condensation technique and Beefill 2 in 1 were prepared with Mtwo System, and Tagger’s hybrid technique with the University of Oregon Crown Down technique. Samples were prepared and cross sections were performed in the third cervical (3 mm), medium (6 mm) and apical (9mm), and then taken to the stereoscopic microscope. Results: Statistical analysis was performed with Chi square and comparison of proportions with the Z tests on 5% level of significance. Group 3 (lateral condensation)...

Objective: This study is an in vitro evaluation of three-dimensional root canal sealing ability of three obturation techniques: Lateral condensation, Tagger’s hybrid technique and thermoplastic Beefill 2 in 1 in mandible teeth. Methodology: it was used 30 first lower premolars which were randomly divided into three groups of 10 each. Root canals were cleaned, disinfected and shaping. The groups of Lateral condensation technique and Beefill 2 in 1 were prepared with Mtwo System, and Tagger’s hybrid technique with the University of Oregon Crown Down technique. Samples were prepared and cross sections were performed in the third cervical (3 mm), medium (6 mm) and apical (9mm), and then taken to the stereoscopic microscope. Results: Statistical analysis was performed with Chi square and comparison of proportions with the Z tests on 5% level of significance. Group 3 (lateral condensation)...