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Keywords = Endocyn

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17 pages, 901 KiB  
Article
Differential Antimicrobial Effects of Endodontic Irrigant Endocyn on Oral Bacteria
by Michael Pearson, Samuel Stewart, Linda Ma, Karl Kingsley and Victoria Sullivan
Hygiene 2025, 5(1), 11; https://doi.org/10.3390/hygiene5010011 - 14 Mar 2025
Cited by 1 | Viewed by 900
Abstract
Endocyn is a root canal irrigant with a stable formulation of hypochlorous acid (HOCl), and should have significant antimicrobial effects. However, there are no available studies that evaluate these effects on different types of bacterial species. In this prospective in vitro study, bacterial [...] Read more.
Endocyn is a root canal irrigant with a stable formulation of hypochlorous acid (HOCl), and should have significant antimicrobial effects. However, there are no available studies that evaluate these effects on different types of bacterial species. In this prospective in vitro study, bacterial species were grown with and without the addition of Endocyn to measure the effects on the Gram-positive bacteria Actinomyces naeslundii, Lactobacillus acidophilus, Streptococcus gordonii, and Streptococcus mutans, as well as the Gram-negative bacteria Porphyromonas gingivalis, Fusobacterium nucleatum, and Veillonella parvula. Turbidity was measured at 24 h, and the differences between the baseline and experimental treatments were measured using two-tailed Student’s t-tests and verified using ANOVA. Gram-positive bacteria were inhibited in the range of −8.2% to −35.5%, p = 0.14 to p = 0.004, while Gram-negative bacteria were inhibited in the range of −16.7% to −41.4%, p = 0.04 to p = 0.001, which were similar to the effects of 5% NaOCl (bleach). These data demonstrated that Gram-positive bacteria were somewhat resistant to Endocyn at lower levels but were inhibited at all higher concentrations, while Gram-negative bacteria were susceptible to Endocyn at all levels, and increased at higher concentrations. These results provide clinically relevant data regarding the efficacy of this disinfectant against common oral pathogens (and commensal bacteria), and are important as they provide evidence regarding public health and the environmental safety of clinical protocols regarding endodontic hygiene. Full article
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19 pages, 1381 KiB  
Article
Assessment of Endocyn on Dental Pulp Stem Cells (DPSCs): A Pilot Study of Endodontic Irrigant Effects
by Brennan Truman, Linda Ma, Samuel Stewart, Karl Kingsley and Victoria Sullivan
Methods Protoc. 2025, 8(1), 18; https://doi.org/10.3390/mps8010018 - 11 Feb 2025
Cited by 1 | Viewed by 1035
Abstract
Many endodontic procedures within the pediatric population are performed with patients aged 12 years and older, using intracanal irrigants to complement mechanical debridement for the removal of debris and to disinfect the root canal system. The use of antimicrobial irrigants that limit damage [...] Read more.
Many endodontic procedures within the pediatric population are performed with patients aged 12 years and older, using intracanal irrigants to complement mechanical debridement for the removal of debris and to disinfect the root canal system. The use of antimicrobial irrigants that limit damage to the dental pulp are the goals of endodontic biomaterials research. Using an existing biorepository of dental pulp stem cells (DPSCs), Endocyn was evaluated in varying concentrations in proliferation and viability assays, and compared with positive (sodium hypochlorite or bleach) and negative (phosphate-buffered saline) controls. The DPSC viability was reduced in the range of −8.3% to −15.8%, p = 0.22 to p = 0.042, while the growth inhibition varied between −29.7% and −63%, p = 0.041 to p = 0.022. However, the RNA analysis revealed that no significant changes in biomarker mRNA expression (Nestin, NANOG, Sox2, Oct4, CD73, CD90, and CD105) were observed. These data demonstrated that all of the concentrations of Endocyn inhibited the DPSC viability and growth, although only high concentrations were statistically significant. Moreover, the administration of Endocyn did not alter the DPSC biomarker expression, which are novel and important findings not previously observed or reported that may assist with the development of clinical decision protocols and methods for the treatment of vital pulp tissue. Full article
(This article belongs to the Section Molecular and Cellular Biology)
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