Department of Endodontics, Chair of Conservative Dentistry and Endodontics, Medical University of Lodz.
Department of Dental Techniques, Chair of Restorative Dentistry, Medical University of Lodz.
Dent Mater J. 2020 Aug 2;39(4):587-592. doi: 10.4012/dmj.2018-430. Epub 2020 Mar 28.
Biomaterials are subjected to various factors during endodontic workflow. The aim was to evaluate the influence of different concentrations of sodium hypochlorite and ultrasound activation on the features and chemical composition of Biodentine. Fifty-four Biodentine samples were divided into 3 groups based on the material setting time. They were subjected to different modes and times of 2% and 5.25% NaOCl irrigation with or without ultrasounds, 12 min (group I), 45 min (group II) and 24 h (group III) after the material mixing. Visual assessment of the sample's surface was performed using the scanning electron microscope and chemical analysis was made with energy dispersive spectroscopy. Both NaOCl irrigation and ultrasounds affected the surface of the material; however, they did not change its chemical composition. The irrigation enhanced by ultrasounds following the placement of Biodentine should be performed after a longer material setting time. The immediate use of ultrasounds is not recommended.
在牙髓治疗过程中，生物材料会受到各种因素的影响。本研究旨在评估不同浓度的次氯酸钠和超声激活对 Biodentine 特性和化学成分的影响。将 54 个 Biodentine 样本根据材料凝固时间分为 3 组。在材料混合后，分别采用不同模式和时间的 2%和 5.25%次氯酸钠冲洗，同时或不结合超声处理，时间分别为 12 分钟（I 组）、45 分钟（II 组）和 24 小时（III 组）。使用扫描电子显微镜对样本表面进行视觉评估，并使用能谱分析进行化学分析。次氯酸钠冲洗和超声处理均会影响材料表面，但不会改变其化学成分。Biodentine 放置后，采用超声增强冲洗应在更长的材料凝固时间后进行。不建议立即使用超声处理。
