Evaluation of the Physicochemical and Biological Properties of EndoSequence BC Sealer HiFlow
| Autor: | Letícia Chaves de Souza, Yu Zeng, Timothy C. Kirkpatrick, Renato S. Silva, Akshita Mann, Ariadne Letra, Ransome van der Hoeven |
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| Rok vydání: | 2020 |
| Předmět: |
Calcium Phosphates
biology Chemistry Radiodensity Silicates Clinical performance Oxides biology.organism_classification Enterococcus faecalis Root Canal Filling Materials Drug Combinations Biological property Germany Materials Testing Setting time Humans Food science Solubility Antibacterial activity General Dentistry |
| Zdroj: | Journal of endodontics. 48(1) |
| ISSN: | 1878-3554 |
| Popis: | Introduction Understanding the physicochemical and biological properties of endodontic sealers is important for endodontic treatment planning. This study evaluated the properties of EndoSequence BC Sealer HiFlow (BCH; Brasseler USA, Savannah, GA), EndoSequence BC Sealer (BC, Brasseler USA), and AH Plus (AHP; Dentsply DeTrey, Konstanz, Germany). The effect of temperature on the setting time and flow of these sealers was also evaluated. Methods The setting time, flow, radiopacity, pH, solubility, and calcium release were investigated following ISO guidelines. The morphology and chemical composition of the sealers were evaluated by scanning electron microscopy and energy-dispersive spectroscopy. The antibacterial activity of sealers was tested against 2 strains of Enterococcus faecalis. Sealer cytotoxicity and the effects on messenger RNA expression of proinflammatory and mineralization genes were also investigated. Data analysis was performed using analysis of variance, Tukey, Kruskal-Wallis, and Dunn multiple comparison tests. P ≤ .05 was considered statistically significant. Results The setting time and flow rate of all sealers were affected by heat (P ≤ .05). The setting times and solubility of BCH and BC were significantly higher than AHP (P ≤ .0001). The radiopacity of AHP was higher than BCH and BC (P ≤ .0001). All sealers were alkaline and had antibacterial effects. Cell viability was higher for BCH and BC than AHP (P ≤ .0001). No significant differences in messenger RNA expression of proinflammatory and mineralization genes were observed. Conclusions Overall, BCH and BC had similar physicochemical and biological properties. The observed high solubility of BCH and BC as well as the high cytotoxicity of AHP might negatively impact the clinical performance of these materials. The application of heat affected the setting time and flow of all sealers. |
| Databáze: | OpenAIRE |
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