Aim: This study was conducted to compare smear layer removal by five different irrigation techniques-conventional needle irrigation (CI), manual dynamic activation (MDA), passive ultrasonic irrigation (PUI), sonic irrigation (SI), and negative apical pressure (NAP).
Materials And Methods: Fifty freshly extracted mandibular first premolars were cleaned and shaped by One Curve rotary files and 3% sodium hypochlorite and 17% ethylenediaminetetraacetic acid. The samples were divided into five equal groups ( = 10), according to the final irrigation activation technique: Group I, CI; Group II, MDA; Group III, PUI; Group IV, SI; and Group V, NAP. The samples were prepared and observed under a scanning electron microscope. The photomicrographs were recorded and evaluated with a scoring system.
Results: Group I and Group II had the highest scores, which showed a statistically significant difference between the other groups ( < 0.05). This was followed by PUI, NAP, and SI.
Conclusion: Final irrigation activation with SI and NAP resulted in the better removal of smear layer when compared to that with other groups.
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| http://dx.doi.org/10.4103/jispcd.JISPCD_267_19 | DOI Listing |
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