Chapter Five developmental alterations and the structure of teeth. We will start with erosion, clinical signs and symptom erosion occurs as a spoon shaped depression. Now this usually comes into the question where there are all these different shapes of depression. And sometimes it can be tricky to know which one is the true one. Let's look at the word erosion. The Oh in the middle looks like the depression and the spoon.
So we know that erosion is a spoon shaped depression.