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Year : 2019  |  Volume : 9  |  Issue : 6  |  Page : 630-636

Comparison of five different irrigation techniques on smear layer removal in apical thirds of root canals of mandibular first premolar: A scanning electron microscopic study

1 Department of Conservative Dentistry and Endodontics, Indira Gandhi Government Dental College and Hospital, Jammu, Jammu and Kashmir, India
2 MDS in Orthodontics, Private Practioner, Jammu, India

Correspondence Address:
Dr. Ankush Jasrotia
Room No. 303, 2nd Floor, Department of Conservative Dentistry and Endodontics, Indira Gandhi Government Dental College and Hospital, Jammu 180001, Jammu and Kashmir.
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jispcd.JISPCD_267_19

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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 (n = 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 (P < 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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