English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Aim: A comparative evaluation of the efficiency of two retreatment file systems in removing Gutta-perchafrom the root canals.Materials and Methods: Forty mandibular premolar teeth with single roots were specifically collectedand decoronated with diamond disc so that the root lengths were standardized.Working length (WL) determination was done and root canal preparation done using Hyflex CM rotaryfiles which was followed with meticulous irrigation and obturation was performed with gutta-percha, bythe lateral condensation technique.AH-Plus sealer was used. The specimens were then divided in a random manner into two groups, inwhich retreatment was performed using two retreatment systems, Mtwo and REndo. These were furthersubdivided into two subgroups groups, i.e. one group using root canal solvent and another without solvent.Retreatment will be considered accomplished when gutta-percha was fully removed from the canal andnone could be observed on the retreatment instruments and the same was confirmed radiographically.Longitudinally sectioning was done to split the root in to two halves-Mesial & Distal and was observedfor the remnants under scanning electron microscope with 40x and 100x magnification. Photographs ofthe specimens were taken using a digital camera and the area of the remaining obturating material wasdetermined using the AutoCAD16 software.Result: The area of remaining guttapercha in mesial and distal half for all the samples were evaluated usingthe Autocad software(Version 2016) and the mean as well as standard deviation of each group were usedfor statistical analysis (SPSS 22.00 for windows; SPSS inc, Chicago, USA).Statistical analysis was doneusing factorial ANOVA and Tukey HSD Post Hoc test. Difference between two groups was determinedusing student t-test and the level of significance was set at p Conclusion: The results revealed that Mtwo R file system was found to be a more efficient rotary systemfor endodontic retreatment w

A comparative evaluation of removal of gutta percha using two retreatment file system: An in vitro study