Abstract

Background: To study rotary retreatment systems in removal of gutta-percha and sealer.Materials and methods: A total of 15 subjects were enrolled. The samples were randomly divided into three groups according to the file system used to remove gutta-percha was performed (n=5): ProTaper Universal Retreatment, ProTaper NEXT and Edge File XR NiTi system. The p- value less than 0.05 was considered statistically significant. Results: The percentage of removal of root canal filling has been recorded. The Protaper Universal R shows median 95.12, minimum 92.03 and maximum 99.12. The Edge file XR shows median value 98.16 and maximum value of 99.80. Conclusion: Edge File XR can be used as an alternative to ProTaper Universal Retreatment files.

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