Türkiye Klinikleri Diş Hekimliği Bilimleri Dergisi, cilt.29, sa.3, ss.446-452, 2023 (Hakemli Dergi)
Objective: This study was aimed to evaluate the influence of calcium silicate-based sealers, with or without gutta-percha, on fracture resistance of roots, in comparison with epoxy-resin based sealer. Material and Methods: Sixty single rooted, single and straight canal mandibular premolar teeth were selected. The samples were decoronated to obtain roots with a standardized length of 13 mm. The samples were randomly divided into 6 groups (n=10). Group 1 (negative control): Root canals were prepared and left unfilled. Group 2 (positive control): Root canals were filled with AH Plus and single cone technique (SC). Group 3a: GuttaFlow Bioseal (GFB) was used without a core material (bulkfill). Group 3b: Root canals were filled with GFB and SC. Group 4a: Tech Biosealer (TB) was used without a core material. Group 4b: Root canals were filled with TB and SC. The fracture resistance of teeth embedded in acrylic resin wasevaluated with the Universal Test Machine. The maximum load values that cause fracture in the samples were determined and recorded in Newtons. The results were statistically analyzed at p<0.05 significance level using one-way analysis of variance and Tukey multiple comparison test. Results: The minimum and highests forces were seen in the negative control and the TB-Bulkfill groups, respectively (p<0.05). When GFB and TB sealers were used as bulkfill, higher fracture resistance were obtained compared to the SC. Conclusion: All root canal sealers examined in this study increased the fracture resistance of prepared root canals. When GFB and TB were used as bulkfill, showed higher fracture resistance compared to SC.