Electrochemical behavior and degradation mechanism of lithium disilicate glass ceramics in acidic environment

IF 2.1 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2024-01-04 DOI:10.1111/ijag.16653

Soraya Lakhloufi, Najoua Labjar, Houda Labjar, Malika Serghini-Idrissi, Souad El Hajjaji

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Abstract

IPS e.max Press, a lithium disilicate-based glass ceramic, is renowned in dental restorations for its mechanical strength and aesthetic appeal. This study delves into its behavior within oral environments, employing electrochemical and surface analysis techniques. By utilizing cyclic polarization curves and impedance spectroscopy, we evaluated its degradation resistance. Surface morphology, composition, and crystal stability were explored through scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDX) and X-ray powder diffraction (XRD) analysis. The glass ceramic exhibited robust resistance to localized degradation across all tested electrolytes. The degradation potential (E_corr) varied with time and pH, indicating electrolyte influence. SEM/EDX affirmed oxide layer formation, while XRD confirmed a stable structure. While showcasing favorable resistance in saliva, citric acid, and lactic acid, IPS e.max Press demonstrated susceptibility to acetic acid. This comprehensive analysis enhances our understanding, providing valuable insights for the development of durable dental materials through a combination of electrochemical analysis and surface characterization.

Abstract Image

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二硅酸锂玻璃陶瓷在酸性环境中的电化学行为和降解机理

IPS e.max Press 是一种二硅酸锂基玻璃陶瓷，因其机械强度和美观性而在牙科修复领域享有盛誉。本研究采用电化学和表面分析技术对其在口腔环境中的行为进行了深入研究。通过循环极化曲线和阻抗光谱，我们评估了它的抗降解性。通过扫描电子显微镜（SEM）/能量色散 X 射线光谱（EDX）和 X 射线粉末衍射（XRD）分析，我们探究了其表面形态、成分和晶体稳定性。在所有测试的电解质中，玻璃陶瓷都表现出强大的抗局部降解能力。降解电位（Ecorr）随时间和 pH 值的变化而变化，表明了电解质的影响。SEM/EDX 证实了氧化层的形成，而 XRD 则证实了稳定的结构。虽然 IPS e.max Press 在唾液、柠檬酸和乳酸中表现出良好的耐受性，但它对醋酸也很敏感。这项全面的分析加深了我们的理解，通过结合电化学分析和表面表征，为开发耐用的牙科材料提供了宝贵的见解。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.