Influence of Kinematics on Apical Debris Extrusion.
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2019, Vol 2, Issue 2
Abstract
Introduction: Apical debris extrusion is an undesirable outcome of biomechanical preparation of the root canal which can result in pain and/or swelling due to severe inflammatory response. Until now none of the available instrumentation systems could completely prevent extrusion. The amount of debris extruded depends upon the preparation techniques, the design of file systems and kinematics of endodontic files. Technological advancements in rotary NiTi instruments have led to the development of newer file systems manufactured from special thermal treated alloys with superior designs which works under varying kinematics to overcome the problems associated with older file systems. Aim: To evaluate the amount of apical debris extrusion with different file systems working under varying kinematics. Materials and Methods: 24 human premolar teeth having single root canal with <5° curvature were selected for this study. Access openings were done and working length was determined. The samples were then randomly divided into three groups depending upon the file systems used for cleaning and shaping. Group I – Twisted File Adaptive (TFA) (n = 8), Group II ¬– Hyflex EDM (HEDM) (n = 8), and Group III –Wave One Gold (WOG) (n = 8). Cleaning and shaping was completed and the mean weight of the debris collected in preweighed Eppendorf tubes were assessed using an electronic balance and analyzed using One Way Analysis of Variance (ANOVA) test. Results: All the samples showed apical debris extrusion. TFA showed the least amount of apical debris extrusion. WOG showed better result than HEDM. However no statistically significant differences were recorded among them. Conclusion: TFA was associated with less debris extrusion compared with WOG and HEDM.
Authors and Affiliations
Dr Sitalakshmi P. T.
Keywords
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