Effectiveness of three final irrigation protocols for debris and filling removal from simulated irregularities

Angela Longo do NASCIMENTO, Aline Teixeira MENDES, Lilian TIETZ, Paula Barcellos SILVA, Pedro Henrique Marks DUARTE, Ricardo Abreu da ROSA, Natália VILLA, Marcus Vinícius Reis SÓ

This study aimed to assess three final irrigation protocols on debris and filling removal from simulated irregularities. Methods: Seventy-eight mandibular premolars were prepared with WaveOne Gold system 45.05, splitted longitudinally, and a standardized groove was performed in the apical portion of the canals. Six roots served as negative control. The roots were randomly divided into two main groups (n = 36). The grooves were filled with dentin debris in thirty six roots. The others thirty-six were filled with gutta-percha and endodontic sealer using Tagger hybrid technique. Each main group was then divided into three groups (n = 12) according to the final irrigation protocol: Easy Clean, passive ultrasonic irrigation (PUI), and XP Clean. In Easy Clean 2.5% NaOCl activation was performed for 3 cycles of 20 seconds and XP Clean for one minute under reciprocating and continuous rotary motion and continuous rotary motion, respectively. In the PUI group, the irrigant was activated in three periods of 20 seconds. Results: No association was found among the scores of debris removal and the irrigation protocols (p = .165). An association was observed among the filling material removal scores and irrigation protocols (p< .05). Conclusion: Easy Clean, PUI and XP Clean were effective for dentin debris removal, but did not for filling material from artificial grooves in the apical third.

Keywords: Endodontics. Microscopy, Electron. Root Canal Filling Materials.

How to cite: Nascimento AL, Mendes AT, Tietz L, Silva PB, Duarte PHM, Rosa RA, Villa N, Só MVR. Effectiveness of three final irrigation protocols for debris and filling removal from simulated irregularities. Dental Press Endod. 2020 Sept-Dec;10(3):69-74.

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