Turkina Anna Yu, Makeeva Irina M, Dubinin Oleg N, Bondareva Julia V, Chernodoubov Daniil A, Shibalova Anastasia A, Arzukanyan Alina V, Antoshin Artem A, Timashev Peter S, Evlashin Stanislav A
Therapeutic Dentistry Department, Institute for Dentistry, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia.
Center for Materials Technologies, Skolkovo Institute of Science and Technology, 30, Bld. 1 Bolshoy Boulevard, 121205 Moscow, Russia.
Materials (Basel). 2023 Jun 5;16(11):4195. doi: 10.3390/ma16114195.
Dental implants are thought to be implanted for life, but throughout their lifespan, they function in aggressive oral environment, resulting in corrosion of the material itself as well as possible inflammation of adjacent tissues. Therefore, materials and oral products for people with metallic intraoral appliances must be chosen carefully. The purpose of this study was to investigate the corrosion behavior of common titanium and cobalt-chromium alloys in interaction with various dry mouth products using electrochemical impedance spectroscopy (EIS). The study showed that different dry mouth products lead to different open circuit potentials, corrosion voltages, and currents. The corrosion potentials of Ti64 and CoCr ranged from -0.3 to 0 V and -0.67 to 0.7 V, respectively. In contrast to titanium, pitting corrosion was observed for the cobalt-chromium alloy, leading to the release of Co and Cr ions. Based on the results, it can be argued that the commercially available dry mouth remedies are more favorable for dental alloys in terms of corrosion compared to Fusayama Meyer's artificial saliva. Thus, to prevent undesirable interactions, the individual characteristics of not only the composition of each patient's tooth and jaw structure, but also the materials already used in their oral cavity and oral hygiene products, must be taken into account.
人们认为牙种植体是终身植入的，但在其整个使用期限内，它们在具有侵蚀性的口腔环境中发挥作用，导致材料本身发生腐蚀以及相邻组织可能出现炎症。因此，对于佩戴金属口腔矫治器的人来说，必须谨慎选择材料和口腔产品。本研究的目的是使用电化学阻抗谱（EIS）研究常见钛合金和钴铬合金与各种口干产品相互作用时的腐蚀行为。研究表明，不同的口干产品会导致不同的开路电位、腐蚀电压和电流。Ti64和CoCr的腐蚀电位分别为-0.3至0 V和-0.67至0.7 V。与钛不同，钴铬合金观察到点蚀，导致钴和铬离子的释放。基于这些结果，可以认为，就腐蚀而言，市售的口干治疗剂比舟山市迈耶人工唾液对牙科合金更有利。因此，为了防止不良相互作用，不仅要考虑每个患者牙齿和颌骨结构的组成的个体特征，还要考虑其口腔中已经使用的材料和口腔卫生产品的个体特征。
