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Year : 1997  |  Volume : 9  |  Issue : 1  |  Page : 57-59

Scanning electron microscopic evaluation of root-canal preparation with SS-K file, Ni-Ti K file, Ultrasonics and Nd: Yag laser.

1 Lecture, Department of Dental Surgery, Institute of Medical Sciences, BHU
2 Jr. Resident, Department of Dental Surgery, Institute of Medical Sciences, BHU
3 Professor and Head, Department of Dental Surgery, Institute of Medical Sciences, BHU
4 Reader, Department of Metallurgical Engineering, Institute of Technology, BHU

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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-7212.347432

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In the present study, 50 extracted permanent premolars were selected. The instruments used for root canal preparation were stainless steel K-file, Nickel-titanium K-File, ultrasonic instrument and Nd:Yag laser. 2.6% sodium hypochlorite solution was used as an irrigating solution. After canal preparation, teeth were sectioned along the long axis and scanning electron microscopic evaluation was done to study the effectiveness of various endodontic instruments at three different levels ie.e. cervical, middle and apical. It was found that Nd: Yag laser was the best among the four instruments used. In the middle and apical region, nickel-titanium file was found to be more effective than ultrasonics and stainless steel file. In the cervical region, stainless steel K-file was found to be better than Ni-Ti files and ultrasonics.

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