Alhamad Mostafa, Barão Valentim A R, Sukotjo Cortino, Cooper Lyndon F, Mathew Mathew T
Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA.
Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia.
Materials (Basel). 2021 Oct 1;14(19):5733. doi: 10.3390/ma14195733.
The corrosive titanium products in peri-implant tissues are a potential risk factor for peri-implantitis. There is very limited information available on the effect of the corrosion and wear products on the dental implant corrosion. Therefore, we determined the influence of Ti-ions and Ti-particles on Ti corrosion. Eighteen commercially pure-Ti-grade-2 discs were polished to mirror-shine. Samples were divided into six groups (n = 3) as a function of electrolytes; (A) Artificial saliva (AS), (B) AS with Ti-ions (the electrolyte from group A, after corrosion), (C) AS with Ti-particles 10 ppm (D) AS with Ti-particles 20 ppm, (E) AS with Ti-ions 10 ppm, and (F) AS with Ti-ions 20 ppm. Using Tafel's method, corrosion potential (E) and current density (I) were estimated from potentiodynamic curves. Electrochemical Impedance Spectroscopy (EIS) data were used to construct Nyquist and Bode plots, and an equivalent electrical circuit was used to assess the corrosion kinetics. The corroded surfaces were examined through a 3D-white-light microscope and scanning electronic microscopy. The data demonstrated that the concentration of Ti-ions and corrosion rate (I) are strongly correlated (r = 0.997, = 0.046). This study indicated that high Ti-ion concentration potentially aggravates corrosion. Under such a severe corrosion environment, there is a potential risk of increased implant associated adverse tissue reactions.
种植体周围组织中的腐蚀性钛产物是种植体周围炎的一个潜在风险因素。关于腐蚀和磨损产物对牙种植体腐蚀的影响，现有信息非常有限。因此，我们确定了钛离子和钛颗粒对钛腐蚀的影响。将18个商业纯钛2级圆盘抛光至镜面光泽。根据电解质将样品分为六组（n = 3）；（A）人工唾液（AS），（B）含钛离子的人工唾液（A组的电解质，腐蚀后），（C）含10 ppm钛颗粒的人工唾液，（D）含20 ppm钛颗粒的人工唾液，（E）含10 ppm钛离子的人工唾液，以及（F）含20 ppm钛离子的人工唾液。使用塔菲尔方法，从动电位曲线估计腐蚀电位（E）和电流密度（I）。电化学阻抗谱（EIS）数据用于构建奈奎斯特图和博德图，并使用等效电路评估腐蚀动力学。通过三维白光显微镜和扫描电子显微镜检查腐蚀表面。数据表明，钛离子浓度与腐蚀速率（I）密切相关（r = ？0.997，？ = 0.046）。本研究表明，高钛离子浓度可能会加剧腐蚀。在如此严重的腐蚀环境下，存在种植体相关不良组织反应增加的潜在风险。
原文中“r = 0.997, = 0.046”中间的逗号后少了一个数值，我按原文直接翻译了，此处可能存在信息缺失。
