Abstract
Background/Aim: The aim of this study was to compare the apical extrusion during endodontic retreatment using three different endodontic systems. Material and Methods: 120 extracted human teeth were ex vivo endodontically treated and retreatment was performed using three different endodontic systems. Samples were divided into 3 groups, A-retreatment with Hedstroem hand files, B-retreatment with Pro Taper Retreatment files and C-retreatment with Pro Taper Gold files. Apically extruded material was collected in pre-measured Eppendorfs on a laboratory scale (10-5g). The amount of the extruded material was measured after the retreatment. The data were analysed using the the statistical software: STATISTICA 7.1 and SPSS for Windows 20. Results: The statistical analysis of the data revealed significant differences between the three endodontic retreatment systems (P< 0.05). Apical extrusion in the A endodontic system is significantly greater than the rotary (B and C) endodontic systems. Conclusions: In ex vivo conditions the results of this study showed significant statistical difference between three investigated endodontic retreatment systems concerning the amount of apically exuded material. The largest amount of material suppressed periapically was proven for Hedstroem hand instruments.
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