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Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2019, vol. 25, issue1
Subject Area: Dental Medicine
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DOI: 10.5272/jimab.2019251.2379
Published online: 19 February 2019
Original article
J of IMAB. 2019 Jan-Mar;25(1):2379-2383
RETREATMENT OF TEETH FILLED WITH SINGLE CONE TECHNIQUE AND MTA BASED SEALER – COMPARISON OF THE EFFECTIVENESS OF DIFFERENT RETREATMENT TECHNIQUES (IN VITRO STUDY)
Мirela Мarinova-Takorovа1
, Elka Radeva1 
, Iva Kisyova2, Emilia Naseva3,
1) Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria
2) Department of Imaging Diagnostics, Military Medical Academy, Sofia, Bulgaria
3) Department of Health Economics, Faculty of Public Health, Medical University, Sofia, Bulgaria.
ABSTRACT:
Purpose: The aim of the presented in vitro study was to compare the effectiveness of three different retreatment techniques in the removal of MTA-based sealer and taper matched single gutta-percha cone from the root canal.
Material and methods: Extracted single rooted human teeth were used (n=33). Roots were enlarged using ProTaper Universal files up to size F2. They were filled with central cone technique and MTA-based sealer. Specimens were divided into three groups (n=11), according to the retreatment method: Gr1 – retreated using ProTaper Universal Retreatment files; Gr2 – hand instruments (H files); Gr3 – ultrasonic tips. For determining the effectiveness of the removal of the filling material specimens were scanned with CT and then observed under microscope under 16x magnification.
Results: Best removal of the filling material for the coronal and middle part was achieved with the hand instruments. The ultrasonic tips presented best in the apical part.
Conclusions: Complete removal of filling material was not achieved in any part of the root canal. Worst results were achieved with the machine rotary files. We would recommend the combined use of machine files with either hand files or ultrasonic tips for achieving better results.
Keywords: single cone technique, MTA based sealer, retreatment techniques,
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Please cite this article as: Marinova-Takorova M, Radeva E, Kisyova I, Naseva E. Retreatment of teeth filled with single cone technique and MTA based sealer – comparison of the effectiveness of different retreatment techniques (in vitro study). J of IMAB. 2019 Jan-Mar;25(1):2379-2383. DOI: 10.5272/jimab.2019251.2379
Correspondence to: Assoc. prof. Elka Radeva, Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University, Sofia; 1, Georgi Sofiiski blvd., 1431 Sofia, Bulgaria; E-mail: eliradeva@abv.bg
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Received: 03 September 2018
Published online: 19 February 2019