Tehran University of Medical Sciences Frontiers in Dentistry 2676-296X 10 6 2013 12 15 548 53 Sedigheh Khedmat Dental Research Center Dentistry Research Institute, Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, and Iranian Center for Endodontic Research, Tehran, Iran. Farzaneh Aghajani Department of Dental Biomaterials, School of Dentistry, Dental Research Center Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran. Shabnam Zaringhalam Undergraduate Student, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. 2015 10 16 To compare the mechanical properties of Resilon and gutta-percha cones after storing at three different temperatures.One-hundred standardized size 40/02 gutta-percha cones and 100 Resilon cones were randomly divided into four groups. The first group of the materials were tested immediately after receipt as the control group. The other three were stored in their packages at -12°C, 4± 1°C and 22± 2°C for three months. Then, obturating cones were loaded by a tensile force at the rate of 5mm/min. Physical integrity of gutta-percha and Resilon cones were also evaluated according to ISO6877. The data were analyzed by one-way analysis of variance, post hoc and t-test. A p-value https://fid.tums.ac.ir/index.php/fid/article/view/581 https://fid.tums.ac.ir/index.php/fid/article/download/581/556