De la Garza-Ramos Myriam A, Estupiñan-Lopez Francisco H, Gaona-Tiburcio Citlalli, Beltrán-Novelo Lucía G, Zambrano-Robledo Patricia, Cabral-Miramontes José, Almeraya-Calderón Facundo
Universidad Autonoma de Nuevo Leon, Facultad de Odontología, Centro de Investigación y Desarrollo de Ciencias de la Salud, Av. Universidad s/n, Ciudad Universitaria, San Nicolás de los Garza, N.L. 66455, Mexico.
Universidad Autonoma de Nuevo Leon, FIME-Centro de Investigación e Innovación en ingeniería Aeronáutica (CIIIA), Av. Universidad s/n, Ciudad Universitaria, San Nicolás de los Garza, N.L. 66455, Mexico.
Materials (Basel). 2020 Sep 21;13(18):4185. doi: 10.3390/ma13184185.
The titanium alloy, Ti6Al4V, is used in dentistry for dental implants because of its excellent resistance to corrosion and its high biocompatibility. However, periimplantitis is considered the main reason for treatment failure. The Ti6Al4V alloy was used to study the corrosion behavior for dental implant applications, using an experimental arrangement of three electrodes with the bacteria and , in addition to Ringer's lactate as electrolytes, at 37 °C and a pH of 5.6. Their electrochemical behavior was studied by open circuit potential (OCP) and cyclic potentiodynamic polarization (CPP) according to ASTM G3-14 and ASTM G61-11, respectively. Scanning electron microscopy (SEM) was employed to determine the morphology of the alloy studied. An experimental model, in situ, was established with the bacteria present in an oral environment to understand the electrochemical behavior of the alloy used in dental implants. The greatest corrosion in Ti6Al4V alloy was produced by the medium that contained the bacterium , which is considered a primary colonizer. In addition, the Ti6Al4V alloy presented uniform corrosion in the three solutions at the different exposure times showing a negative hysteresis in CPP.
钛合金Ti6Al4V因其优异的抗腐蚀性能和高生物相容性而被用于牙科植入物。然而，种植体周围炎被认为是治疗失败的主要原因。采用三电极实验装置，以乳酸林格氏液为电解质，在37℃和pH值为5.6的条件下，用Ti6Al4V合金研究牙科植入物应用中的腐蚀行为，并加入细菌 和 。分别根据ASTM G3 - 14和ASTM G61 - 11，通过开路电位（OCP）和循环动电位极化（CPP）研究其电化学行为。采用扫描电子显微镜（SEM）确定所研究合金的形态。建立了一个原位实验模型，模拟口腔环境中存在的细菌，以了解牙科植入物所用合金的电化学行为。Ti6Al4V合金在含有被认为是主要定植菌 的介质中产生的腐蚀最大。此外，Ti6Al4V合金在三种溶液中不同暴露时间下均呈现均匀腐蚀，在CPP中显示出负滞后现象。
