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Endodontically treated teeth have an increased predilection to fracture. The purpose of current study was to compare and evaluate the fracture resistance of root canal treated teeth obturated withdifferent materials. Seventy extracted single rooted human mandibular premolar teethwere decoronated and instrumented with hand files to a size 30 master apical file. The teeth were divided into three experimental groups of twenty teeth each and one control group of ten teeth. Group 1: In this group the teeth were obturated with AH Plus and GuttaPercha. Group 2: In this group the teeth were obturated with Gutta Flow and GuttaPercha. Group 3: In this group the teeth were obturated with Resilon-Epiphany. Group 4: Control group in which the teeth were unobturated. All teeth were mounted vertically. Fracture strength testing was done using a universal testing machine (Lloyd LR 50K, United Kingdom). The force required to fracture each tooth was recordedand analyzed. Teeth restored with AH Plus and guttapercha exhibited significantly higher resistance to fracture (P<0.001). There was no statistically significant difference in fracture resistance between Gutta Flow and guttapercha, Resilon-Epiphany and control groups. it was concluded that the use of AH Plus and gutta-percha increased the fracture resistance of instrumented teeth compared with Resilon-Epiphany and Gutta Flow and gutta-percha.

iosr journal of dental and medical sciences

A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth Obturated with AH Plus with GuttaPercha, Guttaflow with GuttaPercha and Resilon Epiphany- an Invitro Study.