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Published on: October 11, 2024
Dentinal loss and cleaning efficiency of retreatment files with irrigation activation: An in vitro study
Rajvi D Doctor1, Shikha K Kanodia1, Navya Haritha Nandina1
1Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, Ahmedabad, Gujarat, India.
Aim:
This study aimed to compare dentinal loss during retreatment using ProTaper Universal retreatment file versus NeoEndo retreatment file systems via cone-beam computed tomography (CBCT). In addition, it evaluated the efficacy of conventional needle irrigation, passive ultrasonic-activated irrigation (PUI), and laser-activated irrigation (LAI) in removing bioceramic sealer, utilizing both CBCT and SEM analysis.
Subjects And Methods:
Sixty mandibular premolars were obturated with bioceramic sealer, retreated using ProTaper Universal and NeoEndo systems, followed by irrigation activation techniques (conventional, ultrasonic, and Er:YAG laser). Dentinal loss was assessed via CBCT, and bioceramic sealer removal was evaluated via scanning electron microscope (SEM).
Results:
ProTaper Universal group showed a greater dentinal volume reduction (25%; P < 0.001), while NeoEndo group showed a reduction (18.18%; P < 0.001). Among irrigation protocols, Er:YAG laser activation produced a significant sealer reduction (44.44%), followed by ultrasonic (31.25%) and conventional irrigation (22.22%) (P < 0.001).
Conclusion:
ProTaper Universal showed a greater dentinal loss than NeoEndo, though not statistically significant. Er:YAG LAI achieved significant sealer removal, followed by passive ultrasonic, both outperforming conventional irrigation with statistically significant cleaning efficacy.
