Year : 2019

Volume : Volume 10

Issue : Issue 1

Address for correspondence :
Dr. Kumar Abhinav.
KumarAbhinav@gmail.com

Abstract

Background:  When the root canals are instrumented during endodontic therapy, a layer of material composed of dentine, remnants of pulp tissue and odontoblastic processes, and sometimes bacteria, is always formed on the canal walls. Hence; the present study was undertaken for assessing dentinal changes during endodontic therapy. Materials & Methods: A total of 20 freshly extracted mandibular first premolar were obtained. Group A in which root was prepared with K-type files with conventional step back technique, while group B included root specimens were prepared with NiTi files with conventional step back technique. Biomechanical preparation was done followed by irrigation. Visualization of all specimens was done using scanning electron microscope. All the results were recorded in Microsoft excel sheet and were analysed by SPSS software.   Results: Significant results were obtained while comparing the smear layer grading score among both the study groups. Mean microleakage among specimens of Group A was 3.85 while mean microleakage among specimens of Group B was 2.94. Mean microleakage was higher among specimens of Group A, the results of which were found to be statistically significant. Conclusion: NiTi files exhibit lesser microleakage.

Keywords: Dentinal Changes, Endodontic Therapy.