A Comparison Of Two Thermoplastic Obturation Techniques Trifecta & Ultrafil

In the last years the thermoplasticized gutta-percha obturation techniques have been developed. Because the flowing, the extrusion is one of the main problems. The Ultrafil system is easier and quicker than the lateral condensation technique, but a bigger index of apical extrusion. Has been shown. The Trifecta system has the same problem: It is a difficult technique and presents more incidence of apical extrusion than the lateral condensation technique, but it shows a better adaptation to the canal walls and therefore an apical microleakage. Both systems have been compared separately with the lateral condensation technique, however there is any study amongst them. The aim of this study was to compare in Vitro the apical extrusion and the working time for the thermoplasticized gutta-percha obturation systems Trifecta and Ultrafil. 40 bucco-mesial canals of extracted human molars were prepared mechanically with Hero 642 system and randomly divided into two groups of 20 teeth each one. The Group 1 was obturated with the Trifecta system and the group 2 with the quick injection Ultrafil system. Topseal was used in both groups as a root canal sealer. The canals were observed with a light microscope (40X) and apical extrusion of sealer and/or gutta-percha was recorded. The Ultrafil group resulted in significantly more extrusion than the trifecta group. The average time of obturation was significantly smaller in the Ultrafil technique (p<0,05 (Chi Square).