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Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2025, vol. 31, issue1
Subject Area: Dental Medicine
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DOI: 10.5272/jimab.2025311.6054
Published online: 06 March 2025
Original article
J of IMAB. 2025 Jan-Mar;31(1):6054-6060
EFFICACY OF FIVE TECHNIQUES FOR THE REMOVAL OF CALCIUM HYDROXIDE FROM STRAIGHT AND CURVED ROOT CANALS - MICRO-CT STUDY
Jasmina Mironova1
, Miryana Raykovska2, Elka Radeva1,
1)Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria.
2) Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria.
ABSTRACT:
Introduction: The role of intracanal medications in endodontic treatment is indisputable, but their removal before endodontic treatment is imperative.
Purpose: To compare the effectiveness of five different calcium hydroxide removal techniques in teeth with straight and curved root canals by micro-computed tomography.
Material and Methods: Ninety-two extracted teeth, 46 with straight canals and 46 with curved canals, were prepared with ProTaper Next to full working length and filled with calcium hydroxide. They are randomly divided into 5 groups depending on the applied technique. Group 1 (n=8) syringe and needle, group 2 (n=8) passive ultrasonic irrigation, group 3 (n=8) laser (Er: YAG), group 4 (n=8) EndoActivator and group 5 (n=8) EndoVac, and control group (n=6) without medication. Micro-computed tomography was used to assess residual calcium hydroxide. IBM SPSS Statistics 26 software was used.
Results: The greatest difference in the volume of residual calcium hydroxide between straight and curved root canals was found in syringe and needle, and ultrasonic irrigation. In the apical third, the residual volume in straight canals is 0.200 mm3, and in curved canals 0.666 mm3. At an average position, it is 0.272 mm3 for straight canals and 0.344 mm3 for curved canals.
Conclusion: In straight root canals, the calcium hydroxide residue is found along the entire length of the canal, while in curved canals, it is mostly in the apical third. The average amount of residue in curved root canals is 3-4 times greater than in teeth with straight canals.
Keywords: EndoActivator, EndoVac, Er: YAG laser, Calcium hydroxide, micro-СT,
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Please cite this article as: Mironova J, Raykovska M, Radeva E. Efficacy of five techniques for the removal of calcium hydroxide from straight and curved root canals - micro-CT study. J of IMAB. 2025 Jan-Mar;31(1):6054-6060. [Crossref - 10.5272/jimab.2025311.6054]
Correspondence to: Assist. Prof. Jasmina Mironova, PhD, Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University –Sofia; 17, Vrabcha Str., 1st floor, Sofia, Bulgaria; E-mail: jmironova@abv.bg
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Received: 20 September 2024
Published online: 06 March 2025