![]() ![]() Root canals from single or multi-rooted teeth (straight canals) with necrotic pulps and asymptomatic apical periodontitis were instrumented using either ProTaper Next ( n = 20), ProTaper Gold ( n = 20) and XP-endo Shaper ( n = 20) under irrigation with 3% sodium hypochlorite. doi: 10.1111/j.To compare the antibacterial effectiveness of three rotary file systems i.e., ProTaper Next, ProTaper Gold and XP-endo Shaper in root canals of teeth with asymptomatic apical periodontitis by using the real-time polymerase chain reaction. Efficacy, cleaning ability and safety of different devices for gutta-percha removal in root canal retreatment. ![]() Outcomes of nonsurgical retreatment and endodontic surgery: A systematic review. Torabinejad M., Corr R., Handysides R., Shabahang S. ![]() ![]() Aetiology of root canal treatment failure: Why well-treated teeth can fail. Radiologic assessment of quality of root canal fillings and periapical status in an Austrian subpopulation-An observational study. Polymerase chain reaction–based analysis of microorganisms associated with failed endodontic treatment. Micro-computed tomography non-surgical endodontic retreatment reciprocating movement root canal filling material. However, the non-surgical endodontic retreatment systems allow for similar carrier-based root canal filling material removal. Statistically significant differences were observed between the proportions of remaining root canal filling material of PTR and H-GG ( p = 0.018), between the non-surgical endodontic retreatment working times (min p < 0.001), and between the efficacies of root canal filling material removal by the non-surgical endodontic retreatment techniques ( p = 0.009). The volume of root canal filling material (mm 3), volume of remaining root canal filling material (mm 3), non-surgical endodontic retreatment working time (min), proportion of remaining root canal filling material (%), and efficacy of root canal filling material removal between the non-surgical endodontic retreatment techniques were analyzed using ANOVA one-way statistical analysis. All of the teeth were submitted twice to a micro-computed tomography (micro-CT) scan, before and after non-surgical endodontic retreatment procedures. The study was performed on 99 single-rooted extracted teeth using the ProTaper Gold endodontic rotary system up to the F2 file (Dentsply Maillefer, Baillagues, Switzerland), which were sealed with GuttaCore (Dentsply Maillefer, Ballaigues, Switzerland) and AH plus epoxy resin sealer (Dentsply DeTrey, Konstanz, Germany) and randomly assigned to the following non-surgical retreatment techniques: ProTaper Retreatment endodontic rotary instruments (D1-D3 files, Dentsply Maillefer, Ballaigues, Switzerland n = 33, PTR), Reciproc Blue endodontic reciprocating instrument (R50, VDW, Munich, Germany n = 33, RCB50), and a combined root canal retreatment technique between Gates-Glidden drills (sizes #3 and #2, Dentsply Maillefer, Ballaigues, Switzerland) and Hedstrom files (file size 35, 30, and 25, Dentsply Maillefer, Ballaigues, Switzerland n = 33 H-GG). The aim of this study is to analyze and compare the efficacy of three non-surgical endodontic retreatment techniques in removing a carrier-based root canal filling material from straight root canal systems. ![]()
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