PDF(Pubmed)
Abstract：
Background Microplastics are acknowledged as significant environmental contaminants. The clinical use of dental materials, particularly adhesives containing plastic polymers, can give rise to the production of plastic micro- and nanoparticles, which subsequently find their way into the environment. The aim of the study was to detect different microplastics and identify them in various orthodontic adhesives. Materials and methods Four different light cure orthodontic adhesives, including Transbond XT (3M Unitek, Monrovia, CA), Ormco Enlight (Ormco, Orange, CA), Orthofix SPA (Orthofix, Verona, Italy), and Aqualine LC (Tomy International Inc, Tokyo, Japan), were collected and placed in separate Eppendorf tubes. Microplastics present in each adhesive were identified using scanning electron microscopy. Subsequently, each specimen was suspended in hydrogen peroxide, placed within a shaking incubator, and analyzed using Fourier transform infrared spectroscopy (FTIR) to identify the type of polymer. Results The scanning electron microscope shows the surface morphology and the most predominant types of microplastics identified were fibers, fragments, and pellets. FTIR results showed the presence of several major functional groups, including hydroxyl, amine, ester, fluoro, and halo groups. Conclusion When contrasted with the quantity of microplastic waste generated by other sectors like the textile, cosmetic, and fishing industries, the microparticulate waste stemming from dental adhesives has a minimal effect on environmental deterioration. Strategies for addressing this concern should give precedence to reducing the use of these materials and adopting effective recovery methods, which could potentially involve recycling processes.
摘要：
背景技术微塑料被认为是重要的环境污染物。牙科材料的临床使用，特别是含有塑料聚合物的粘合剂，可以产生塑料微米和纳米颗粒，他们随后找到了进入环境的途径。该研究的目的是检测不同的微塑料，并在各种正畸粘合剂中鉴定它们。材料和方法四种不同的光固化正畸粘合剂，包括TransbondXT(3MUnitek，蒙罗维亚,CA),OrmcoEnlight(Ormco,橙色,CA),OrthofixSPA(Orthofix,维罗纳,意大利),和AqualineLC(TomyInternationalInc,东京,Japan),收集并置于单独的Eppendorf管中。使用扫描电子显微镜鉴定每种粘合剂中存在的微塑料。随后，每个样本都悬浮在过氧化氢中，放置在摇晃的孵化器中，并使用傅里叶变换红外光谱（FTIR）进行分析，以识别聚合物的类型。结果扫描电子显微镜显示表面形貌和最主要的微塑料类型是纤维,碎片,和颗粒。FTIR结果显示存在几个主要官能团,包括羟基，胺,酯,氟,和光环组。结论与纺织品等其他部门产生的微塑料废物的数量相比，化妆品,和渔业，源自牙科粘合剂的微粒废物对环境恶化的影响最小。解决这一问题的战略应优先考虑减少这些材料的使用和采用有效的回收方法，这可能涉及回收过程。
