World Journal of
Pharmaceutical and Life Sciences

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Pharmaceutical and Life Sciences
An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)
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Abstract

THE INCIDENCE OF DENTINAL MICROCRACKS CAUSED BY HAND VERSUS DIFFERENT ROTARY INSTRUMENTS AFTER BIOMECHANICAL PREPARATION: AN IN VITRO STUDY

Dr. Neetu Jindal*, Dr. Rubal Khetan, Dr. Yogesh Kumar, Dr. Renu Aggarwal and Dr. Kanika Aggarwal

ABSTRACT

Introduction: The objective of this study was to evaluate the behaviour of different stainless steel and NiTi instruments on root canal dentin. Materials and Methods: Fifty single-rooted premolars were selected. All specimens were decoronated and divided into one control and four experimental groups, each group having 10 samples. Group I is control group, Group II: Hand K-files (Mani), Group III: Pro Taper Universal (PT; Dentsply Maillefer), Group IV: Mtwo (VDW, Munich, Germany), and Group V: Hyflex (Coltene-Whaledent, Allstetten, Switzerland). Roots of each sample were sectioned at 3, 6, and 9mm from the apex and were then viewed under a stereomicroscope to evaluate the presence or absence of dentinal defects. Results: In roots prepared with hand files (HFs) showed lowest percentage of dentinal defects than all the experimental rotary systems. The data was statistically analysed. Conclusion: Within the limitations of this in vitro study, some endodontic preparation methods might damage the root and induce dentinal defects.

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