teeth

Chemistry

Researchers study what happens to teeth as we age by looking at individual atoms in tooth enamel.

Shown here is Jack Grimm, a doctoral student in materials science and engineering at California State University and a doctoral intern at PNNL, loading a plasma-focused ion beam scanning electron microscope with an atom probe. Preparing an enamel sample for tomography. Credit: Andrea Starr/Pacific Northwest National Laboratory Teeth are essential for breaking down the food we eat and are protected…