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Volume 8 Issue 7 (July, 2020)

Original Articles

Comparison of efficacy of two different root canal sealers used on the fractured resistance of endodontically treated teeth
Novsheba Showkat, Junaid Mohi u din, Aman Dhiman

Background: The greatest incidence of vertical root fracture occurs in teeth after endodontic therapy. Most commonly used root canal sealer is the zinc oxide-eugenol (ZOE) sealer and has been used for several decades because of its satisfactory physicochemical properties. However, leakage and recontamination of the root canal system due to eugenol or zinc oxide loss through continuous hydrolysis which causes post treatment complication.Hence; the present study was undertaken for assessing and comparing the efficacy of two different root canal sealers used on the fractured resistance of endodontically treated teeth. Materials & methods:A total of 90 freshly extracted mandibular first premolars were included in the present study. De-coronation of all the specimens was done. After decoration, bio-mechanical preparation of all the specimens was done with intermittent irrigation. All the specimens were divided into three study groups with 30 specimens in each group as follows: AH Plus group: AH plus sealer was used for completing the obturation, ZOE group: ZOE sealer was used for completing the obturation, and Control group: Unobturated specimens. After completion of obturation, all the specimens were embedded in acrylic blocks and were subjected to universal force testing machine for assessing the maximum fracture force. Results:Mean fracture force required among the specimens of AH plus group, ZOE group and control group was found to be 214.3 N, 139.1 N and 78.4 N respectively. While comparing the mean fracture force among the three study groups, it was observed that AH plus required maximum fracture force, followed by ZOE, and lastly control; the results of which were found to be statistically significant. Conclusion: AH plus sealer had highest fracture force in comparison to ZOE sealer. Key words: Root canal sealer, Fracture resistance

 
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