Abstract
In modern endodontics, removal of accumulated hard tissue debris (AHTD) from root canals is requested. In the last decade, different irrigating solutions and activation methods have been successfully tested. Sonic activation has been shown to be effective in the removal of AHTD. Electric current has been tested before in restorative dentistry, but not in endodontics. An experimental electric current delivering device was compared in the removal of AHTD, using microCT analyses. Fifteen single-rooted teeth were shaped with TruNatomy system endodontic files and divided into three groups: negative control group: specimens underwent no activation; EA group: specimens were activated with EndoActivator (EA); EB group: specimens were activated with ElectroBond (EB). The 2D images, 3D images and morphometric analysis from the microCT showed a statistically significant increased AHTD removal when EB was used. Results of the present preliminary study showed that the irrigant activation with ElectroBond is encouraging when compared to EndoActivator along the entire root canal system. The AHTD was significantly statistically reduced, validating the clinical use of electric fields in endodontics.
Highlights
The main objectives of root canal treatment are three-dimensional cleaning, shaping and obturation of the root canal system, comprehensively enunciated in 1974 by Herbert Schilder [1]
The aims of the present study were to investigate the effectiveness of an electric current device and to compare it to endodontic sonic activation (EA) of irrigating solutions
Results showed the efficacy of electric fields in the activation of endodontic irrigants and accumulated hard tissue debris (AHTD) removal in the final irrigation
Summary
The main objectives of root canal treatment are three-dimensional cleaning, shaping and obturation of the root canal system, comprehensively enunciated in 1974 by Herbert Schilder [1]. During the root canal instrumentation, a residual including organic and inorganic components, known as accumulated hard tissue debris (AHTD), is produced [5]. This debris is regarded as an undesired side effect of shaping procedures as it may harbor microorganisms from disinfecting irrigants and may interfere with root filling materials, preventing their adaptation into hard-to-reach areas. Using only irrigating solutions cannot ensure necessities [18] To enhance their efficacy, various manual and machine-assisted agitation techniques have been offered, including brushes; hand-activated files or gutta-percha cones; and laser, sonic and ultrasonic systems [19]. It reduces nanoleakage as it enhances resin infiltration into the demineralized collagen matrices of acid-etched dentin [25,26]
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