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10. Antimicrobial activity, toxicity and accumulated hard‐tissue debris (AHTD) removal efficacy of several chelating agents

Author

L. Ferrari, Luciano Giardino, Nidambur Vasudev Ballal, Alessandro Bidossi, M. Del Fabbro, Marcello Maddalone, Paolo Savadori, B. S. S. Rao, S. Das, Giardino, L, Bidossi, A, Del Fabbro, M, Savadori, P, Maddalone, M, Ferrari, L, Ballal, N, Das, S, and Rao, B

Subjects
Micro-CT, Serial dilution, Sodium Hypochlorite, 0206 medical engineering, Cetrimide, Ethylenediaminetetraacetic acid, 02 engineering and technology, biofilm, irrigation, Enterococcus faecalis, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Anti-Infective Agents, Cricetinae, Animals, Chelation, Food science, Clonogenic assay, General Dentistry, Edetic Acid, Chelating Agents, confocal laser scanning microscopy, Root Canal Irrigants, biology, Chemistry, 030206 dentistry, biology.organism_classification, Antimicrobial, 020601 biomedical engineering, chelating agent, Toxicity, Dental Pulp Cavity, Root Canal Preparation
Abstract

Aim: To evaluate the antimicrobial, toxicity and cleaning effectiveness of ethylenediaminetetraacetic acid (EDTA) and maleic acid (MA) alone and combined with cetrimide (CTR). Methodology: Cytotoxic and genotoxic effects were assessed on Chinese hamster cells V79 using the MTT, clonogenic and micronucleus assays, respectively. The bacterial inhibitory and bactericidal concentrations (MIC and MBC, respectively) were determined on a strain of Enterococcus faecalis. Antimicrobial tests were performed on a biofilm model after treatment with the chelating agents by using a biofilm eradication concentration (MBEC) and confocal laser scanning microscope (CLSM) assays. Quantification of cell biomass and percentage of live and dead cells in the biomass were assessed for each group. The percentage reduction of accumulated hard-tissue debris (AHTD) after root canal preparation and final irrigation protocols was evaluated by micro-CT. Statistical tests of one-way analysis of variance (anova), Bonferroni test, Kruskal–Wallis test, Dunn’s multiple comparison test and Wilcoxon matched-pairs signed-rank tests were used. Results: Cetrimide alone as well as in combination with EDTA and MA at dilutions of 1/10 and 1/100 was significantly more toxic as compared to untreated controls (P

Published
2020

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