 The study used atomic force microscopy and synchrotron X-ray tomography to visualize the effects of acid exposure on human enamel over time. The results showed that the enamel surface was affected first, followed by deeper layers. This allowed researchers to observe the progression of the demineralization process in real time. Additionally, the rate of demineralization was measured, demonstrating the potential use of this technique for studying other experimental conditions such as treated enamel or remineralization. This article was authored by Cyril Bisnard, Oli Marie, Sassani Sassidran, and others.