Prediction of tribocorrosion processes in titanium-based dental implants using acoustic emission technique: Initial outcome
Prediction of tribocorrosion processes in titanium-based dental implants using acoustic emission technique: Initial outcome
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DOI：
10.1016/j.msec.2021.112000
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发表时间：
2021-03-03
影响因子：
7.9
通讯作者：
Mathew, Mathew
中科院分区：
文献类型：
--
作者：
Bara, Valentim A. R.;Ramachandran, Remya Ampadi;Mathew, Mathew
牙科种植体的使用在过去的几十年里迅速增长，钛基牙科种植体是牙科中常用的修复结构。近年来，被称为摩擦腐蚀的腐蚀和磨损的共同作用被认为是牙种植体早期失效的主要驱动过程。然而，目前还没有研究报道对摩擦腐蚀过程进行提前预测。因此，本研究对声发射（AE）技术如何预测商业纯钛（cpTi）和钛锆（TiZr）合金的摩擦腐蚀过程进行了新的研究。在这项研究中，摩擦腐蚀试验是在恒电位条件下进行的，与之相关的声发射检测系统捕获了声发射数据。通过恒电位评估获得的电流演化和摩擦系数数据与声发射绝对能量进行了比较，结果表明摩擦腐蚀特征的数据解释相同。其他声发射数据，如持续时间、计数和振幅，与其他恒电位腐蚀评估更吻合，在检测摩擦腐蚀方面提供了更有希望的结果。因此，声发射可以作为预测种植体摩擦腐蚀的一种工具。实验结果还揭示了Ti5Zr是最合适的种植体材料之一，同时暴露了Ti10Zr在模拟口腔环境中较低的承受效能。
The use of dental implants is growing rapidly for the last few decades and Ti-based dental implants are a commonly used prosthetic structure in dentistry. Recently, the combined effect of corrosion and wear, called tribocorrosion, is considered as a major driving process in the early failure of dental implants. However, no previous study has reported the prediction of tribocorrosion processes in advance. Therefore, this study is a novel investigation on how the acoustic emission (AE) technique can predict tribocorrosion processes in commercially pure titanium (cpTi) and titanium-zirconium (TiZr) alloys. In this study, tribocorrosion tests were performed under potentiostatic conditions and AE detection system associated with it captures AE data. Current evolution and friction coefficient data obtained from the potentiostatic evaluations were compared with AE absolute energy showcased the same data interpretation of tribocorrosion characteristics. Other AE data such as duration, count, and amplitude, matched more closely with other potentiostatic corrosion evaluations and delivered more promising results in the detection of tribocorrosion. Hence, AE can be consider as a tool for predicting tribocorrosion in dental implants. Experimental results also reveal Ti5Zr as one of the most appropriate dental implant materials while exposing Ti10Zr's lower effectiveness to withstand in the simulated oral environment.