Journal of Conservative Dentistry
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Year : 2017  |  Volume : 20  |  Issue : 1  |  Page : 12-16

Efficacy of two rotary retreatment systems in removing Gutta-percha and sealer during endodontic retreatment with or without solvent: Acomparative invitro study

Department of Conservative Dentistry and Endodontics, Sri Rajiv Gandhi College of Dental Sciences and Hospital, Bengaluru, Karnataka, India

Correspondence Address:
Moushmi Chalakkarayil Bhagavaldas
Department of Conservative Dentistry and Endodontics, Al-Azhar Dental College and Hospital, Thodupuzha, Kerala - 685 605
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.209075

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Objectives: The aim of this invitro study was to compare the efficacy of two retreatment rotary systems in the removal of Gutta-percha(GP) and sealer from the root canal walls with or without solvent. Materials and Methods: Forty-eight extracted human mandibular first premolars were prepared and obturated with GP and AH Plus sealer. Samples were then randomly divided into four groups. GroupI was retreated with MtwoR rotary system without solvent, GroupII was retreated with MtwoR rotary system with Endosolv R as the solvent, GroupIII with D-RaCe rotary system without solvent, and GroupIV with D-RaCe rotary system and Endosolv R solvent. The cleanliness of canal walls was determined by stereomicroscope(×20) and AutoCAD software. Kruskal–Wallis test and Mann–Whitney U-test were used to compare the data. Results: Results showed that none of the retreatment systems used in this study was able to completely remove the root canal filling material. D-RaCe with or without solvent showed significantly(P>0.05) less filling material at all levels compared to MtwoR with/without solvent. Conclusion: Within the limitation of the current study, D-RaCe rotary retreatment system is more effective in removing filling material from root canal walls when compared to MtwoR rotary retreatment system.

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