Dąbrowska Katarzyna, Palatyńska-Ulatowska Aleksandra, Klimek Leszek
Department of Dental Techniques, Chair of Restorative Dentistry, Medical University of Lodz, 251 Pomorska Street, 92-217 Lodz, Poland.
Department of Endodontics, Chair of Conservative Dentistry and Endodontics, Medical University of Lodz, 251 Pomorska Street, 92-217 Lodz, Poland.
Materials (Basel). 2022 May 11;15(10):3467. doi: 10.3390/ma15103467.
There are various factors that may interfere with the activity of biomaterials during endodontic therapy. One of them is the canal system irrigation procedure with different rinsing solutions performed after the placement of bioactive cements. The authors investigate the influence of citric acid, a chelating agent, on the surface and the chemical composition of Biodentine tricalcium silicate-based cement using a multimethod approach. Twenty samples were divided into two groups based on the material setting time. They were subjected to citric acid irrigation with or without ultrasonic activation for 5 and 20 min. The chemical analysis was made with energy dispersive spectroscopy (EDS). The visual assessment of Biodentine surface was carried out in scanning electron microscope (SEM). The volume of material loss during the procedure was measured with Keyence optic microscope and dedicated digital software. Statistical analysis was performed. The results of the study show that the irrigation with citric acid influenced the surface appearance of the material and changed its chemical composition in both investigated groups. The ultrasonic activation (US) of the liquid has also aggravated its impact. Further research is needed to assess if that fact may change the sealing properties of the material influencing the long-term clinical outcome.
在牙髓治疗过程中，有多种因素可能会干扰生物材料的活性。其中之一是在放置生物活性水泥后，用不同的冲洗液进行根管系统冲洗程序。作者采用多方法研究了螯合剂柠檬酸对基于三硅酸钙的Biodentine水泥表面和化学成分的影响。根据材料凝固时间，将20个样本分为两组。对它们进行有或无超声激活的柠檬酸冲洗5分钟和20分钟。用能量色散光谱仪（EDS）进行化学分析。在扫描电子显微镜（SEM）下对Biodentine表面进行视觉评估。用基恩士光学显微镜和专用数字软件测量该过程中材料损失的体积。进行了统计分析。研究结果表明，柠檬酸冲洗影响了材料的表面外观，并在两个研究组中改变了其化学成分。液体的超声激活（US）也加剧了其影响。需要进一步研究来评估这一事实是否会改变材料的密封性能，从而影响长期临床结果。
