Evaluation of the Efficiency of Three Different Ni-Ti Systems in Removal of Root Canal Filing Material in Extracted Teeth using Micro-Computerized Tomography
Project no. 22723 · Status: Kapanmış (Yayın bekleniyor) · 2021
Summary
<p>The aim of the present study was to evaluate and compare the instrumentation time and efficiency of three different Ni-Ti systems in removal of root canal filling material in mandibular molar teeth using micro-computerized tomography (micro-CT). 36 mandibular first molars extracted for periodontal reasons were randomly divided into three groups (n=12) according to the selected retreatment system. Primary root canal treatment procedures were performed by a single operator. The root canals were prepared with K-files and filled using cold lateral compaction technique. The initial micro-CT images were obtained. Root canal treatment procedures were performed using ProTaper Retreatment (Dentsply Maillefer; Ballaigues, Switzerland), MicroMega Remover (Coltene/Whaledent AG, Altstätten, Switzerland) and Vdw Rotate Ni-Ti rotary file systems (Vdw Dental, Munich, Germany) respectively. Instrumentation time for each group was recorded. Second micro-CT images were obtained and the amount of remaining root canal filling material was evaluated using three-dimensional modeling technique. Instrumentation time was significantly higher in the Vdw Rotate group compared to ProTaper Retreatment and MicroMega Remover groups (P<0.05). Significantly highest amount of residual filling material was observed in the ProTaper Retreatment group (P<0.05). There was not any significant difference between the MicroMega Remover and the Vdw Rotate groups regarding the remaining filler materials (P>0.05).</p>