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Source publication
Root canal treatment failure depends on many factors. Overfillings, insufficient fillings, missing canals, failure to provide a complete apical plug, and impermeability of coronal restoration are some of them. Failed root canal treatment may not always manifest itself immediately after treatment. Sometimes, root canal treatments, which have not bee...
Context in source publication
Context 1
... a few trials with H file size #30, the extruded part came out with this file in one piece. A radiograph was taken to confirm the gutta percha removal ( Figure 3). Open Journal of Stomatology Later, the apical diameter was prepared with K and H files up to size #50 in order to clean the necrotic root structure. ...
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Objectives:
The aim of this study was to investigate the influence of exposure to additional preclinical endodontic training on undergraduate students' technical quality of root canal treatment and overall confidence levels in endodontics.
Methods:
Technical quality of root canal treatment performed clinically by fifth-year undergraduate student...
Citations
Objective
This research was aimed at assessing the effectiveness of manual H-files versus a combination of a Pro-Taper universal rotary canal preparation system and retreatment system in removing gutta-percha (GP) during endodontic retreatment, by using a digital radiography technique.
Methods
This ex vivo study used a non-probability consecutive sampling technique. The study sample comprised 60 extracted anterior permanent teeth, each with one root with a straight root canal (RC). After preparation, RCs were obturated with GP and sealer. Subsequently, teeth were stored for 2 weeks in a humid environment at 37 °C. Thirty teeth each were randomly assigned to the control (group I), and experimental (group II) groups. GP removal was performed with H-files {group I) or a combination of a Pro-Taper universal rotary canal preparation system and retreatment system (group 2). Digital radiographs were acquired with Carestream digital radiovisiography software (Kodak; version-VER.6.10.8.3-A), and the presence of residual GP was analyzed. AutoCAD (2006) software was used to demarcate the RC and residual root filling. The residual GP in both groups was compared with independent sample t-tests.
Results
The remaining root filling did not significantly differ when GP was removed with conventional Hedstrom files versus a combination of Pro-Taper Universal preparation and retreatment file systems. The residual GP was confined to the apical third of the canals in both groups.
Conclusions
Pro-Taper Universal preparation and retreatment file systems have similar effectiveness to manual H-files in GP removal in straight canals.
Aim: To compare the effectiveness of conventional and rotary NiTi files in the removal of Gutta-Percha (GP) in straight roots during root canal retreatment (reRCT), using manual Hedstorm files (H-files) and ProTaper Universal Retreatment System, respectively. Methods: It was an ex-vivo study using non-probability consecutive sampling. Sixty extracted single rooted maxillary and mandibular permanent anterior teeth, with straight canals were selected for this study. Following preparation, the root canals were filled with GP along with a sealer and kept for two weeks in a moist environment at room temperature. Thirty teeth were randomly allocated to the study and control groups each. GP removal was accomplished with Hedstrom files and ProTaper retreatment files in group 1 and group 2, respectively. Digital radiographs were obtained using Carestream (Kodak) RVG digital radiography system software version VER.6.10.8.3-A and analyzed for the difference of opacities representing residual GP. AutoCAD 2006 software was used to outline the root canal and the residual root filling. Independent sample t test was used to compare the total residual GP in both groups.
