Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
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ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
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Advances in Clinical and Experimental Medicine

2019, vol. 28, nr 2, February, p. 243–248

doi: 10.17219/acem/78022

Publication type: original article

Language: English

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A comparative assessment of the antibacterial activity of root canal sealers on 2 Actinomyces species: An in vitro study

Małgorzata Pawińska1,A,B,C,D,E,F, Elżbieta Łuczaj-Cepowicz2,A,B,C,D, Grzegorz Szczurko1,A,B,C,D, Anna Kierklo3,A,B,C, Grażyna Marczuk-Kolada3,C,D,E, Katarzyna Leszczyńska4,B,C,F

1 Department of Integrated Dentistry, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Poland

2 Department of Pediatric Dentistry, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Poland

3 Department of Dentistry Propedeutics, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Poland

4 Department of Microbiology, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Poland

Abstract

Background. Actinomyces species have a low virulence and pathogenicity, but under specific circumstances they may be involved in root canal and periapical tissue infections.
Objectives. The aim of the study was to investigate the antibacterial activity of various root canal sealers on standardized strains of Actinomyces.
Material and Methods. The materials tested in this study included AH Plus™ Jet (AH), Apexit® Plus (AP), Endomethasone N (EN), GuttaFlow® (GF), Hybrid Root SEAL (HB), MTA Fillapex (FL), Real® Seal (RCS), Roeko Seal Automix (RSA), Sealapex™ (SP), and Tubli-Seal™ (TS). The antibacterial effect of the freshly mixed sealers on standardized strains of Actinomyces israelii NCTC 8047 and Actinomyces viscosus ATCC 15987 was evaluated with the use of the agar diffusion test (ADT). The results were obtained by measuring the diameter of the growth inhibition zone at 96 h and 1, 2, 3, and 4 weeks, and were analyzed in time using repeated measures analysis of variance (ANOVA). Statistically significant differences among the materials were determined by using one-way ANOVA and Tukey’s post hoc testing. A paired Student’s t-test was applied to compare the susceptibility of particular strains to each sealer. The critical level of significance for all tests was p < 0.05.
Results. Most sealers demonstrated growth inhibition zones against both tested bacteria, except for RSA and GF. Actinomyces viscosus was significantly more susceptible than A. israelii to AP, RCS (p < 0.001) and TS (p = 0.012). Actinomyces israelii was significantly more susceptible than A. viscosus to EN, HB and SP (p < 0.001).
Conclusion. The antimicrobial effect of the examined materials varied considerably depending on the type of material and bacterial species tested. Most of the tested root canal sealers exhibited antibacterial activity on standardized strains of Actinomyces, with FL showing the highest antibacterial effect on both bacterial strains. Importantly, both standardized strains of Actinomyces were characterized by varied sensitivity to root canal sealers.

Key words

Actinomyces, antibacterial agents, root canal sealers

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