Abstract
OBJECTIVES: The present research was conducted to assess incidences of root microcracks caused by hand and rotary file system at different lengths MATERIAL AND METHODS: This in-vitro study was undertaken to assess incidence of root microcracks caused by hand and rotary file system at different lengths In total, 100 the mandibular premolar with straight roots determined with intact, fully formed apices were taken. Samples were randomly distributed into 5 groups based on the file system used: a) Group A: Control, b) Group B: Reciproc, c) Group C: WaveOne, d) Group D: One Shape and e) Group E: ProTaper. Pearson Chi-square test was used to determine the differences between groups. The dentinal defects were expressed as percentage of samples with microcracks in each group. Level of statistical significance was set at p-value less than 0.05. RESULTS: The chi square test was used to compare the Distribution of the number of teeth in which cracks were observed on the horizontal sections. It was found to be significant with group ProTaper showing maximum cracks at 3,6,9 mm level as compared to other file systemCONCLUSION: Nickel-titanium instruments causes cracks on the apical root surface or in the root canal wall. ProTaper causes maximum dentinal cracks as compared to other file systems
Highlights
Endodontic treatment is fundamentally aimed for prevention and cure of apical periodontitis
The results regarding the presence of dentinal defects was expressed as the number and percentage of samples with microcracks in each group
While doing biomechanical preparation, a torque force is exerted on the root canal walls
Summary
Endodontic treatment is fundamentally aimed for prevention and cure of apical periodontitis. The primary requisite is to achieve shaping and cleaning the root canal system effectively as well as maintaining the original anatomical configuration. The Clinical evidence from the existing literature reports that root canal systems is to be cleaned, shaped and obturated to achieve hundred percent success. Careful manipulation of hand instruments within the root canal space and adhering strictly to the biologic and surgical principles, following essential disinfection procedures were incorporated so as to prevent any iatrogenic incidences such as instrument fracture, external transportation, ledge, or perforation. In recent times, mechanized and automated systems for preparation and sealing of root canal system have been developed.[5,6,7,8,9]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
