Comparison Of Different Gutta-percha Root Filling Techniques: Ultrafil 3D, Obtura â…¡ And Lateral Condensation

OBJECTIVES: In this in vitro study, the core (gutta-percha or gutta-percha and carrier) / sealer ratio and the sealing ability were calculated for 3 different gutta-percha techniques: Ultrafil 3D, Obtura and lateral condensation. METHODS: Sixty freshly extracted mandibular single-rooted teeth were instrumented and randomly divided into 3 groups and then obturated with Ultrafil 3D, Obtura II or lateral condensation. The obturation time was recorded. The micro effusion was measured in 10 stained teeth of each group. The micro-chink between filling materials and the wall of root canal of the other 10 teeth was measured with scanning electron microscope. The data were analyzed using unpaired Student's t-test. RESULTS: The obturation time of lateral condensation group was the longest, then was obtura group, that of Ultrafil 3D group was the shortest (p<0.01). The apex micro effusion and micro-chink of lateral condensation group are significantly larger than the other two groups (P<0.05). However, there was no statistical difference between the two injection thermoplasticized gutta-percha technique groups (p>0.05). CONCLUSION: Under in vitro conditions, the two injection-thermoplasticized gutta-percha techniques had more excellent adaptation to canal wall and better quality of the root fillings with less obturation time compared with lateral condensation.