Understanding Your Tooth's Anatomy

The visible part of your tooth is actually changing all the time. What you see is

called the "clinical crown," but the real, full crown covered in enamel is the

"anatomical crown," and it stays the same size. As you age or your gums recede,

more of that tooth becomes visible, making your clinical crown look longer. This exposes the

root, which isn't smooth. It has little indentations called root concavities. Floss can just glide

right over these spots, leaving gunk behind. That’s why your hygienist might

recommend interdental brushes. So, the tooth you see isn't the whole

story.