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  • Title: Comparative evaluation of the fracture resistances of endodontically treated teeth filled using five different root canal filling systems.
    Author: Sandikci T, Kaptan RF.
    Journal: Niger J Clin Pract; 2014; 17(6):667-72. PubMed ID: 25385899.
    Abstract:
    AIM: The aim of this study was to compare the fracture resistances of teeth filled using different root canal sealers and rials. MATERIALS AND METHODS: One hundred and twenty single rooted mandibular human incisor teeth with single canals were divided into 5 experimental groups of 20 teeth with 2 control groups of 10 teeth each. After root canal shaping using K3 rotary instruments, root canals were filled as follows: Group 1: (-) control, Group 2: (+) control, Group 3: Gutta-percha/AH Plus, Group 4: Thermafil/AH Plus, Group 5: Resilon/Epiphany self-etch (Epiphany SE), Group 6: Gutta-percha/Epiphany SE ve Group 7: EndoREZ sealer/EndoREZ cone. After the root canal sealers set, the apical 4 mm. portions of the specimens were embedded in cold curing acrylic and a fracture resistance test was applied in a universal testing machine. The load at which fracture occurred was recorded for each group and statistically analyzed using one-way ANOVA and Tukey's honestly significant difference tests. RESULTS: Resilon/Epiphany SE ve EndoREZ sealer/EndoREZ cone groups had lower fracture resistances compared with the negative control group consisted of teeth without root canal shaping (P < 0.05). Gutta-percha/AH Plus, Thermafil/AH Plus and Gutta-percha/Epiphany SE groups showed similar fracture resistances (P > 0.05). The fracture resistance of the instrumented, but unfilled positive control group was significantly lower compared with (-) control, Gutta-percha/AH Plus, Thermafil/AH Plus (P < 0.01) and Gutta-percha/Epiphany SE (P < 0.05) groups. There were no significant differences between the fracture resistances of the Resilon/Epiphany SE and EndoREZ sealer/EndoREZ cone and positive control groups (P > 0.05). CONCLUSIONS: Root canal shaping procedures decrease the fracture resistance of teeth, and lateral condensation performed with AH Plus sealer and Gutta-percha and the Thermafil technique were found to be more successful.
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