Without enamel, your teeth would be worn down significantly. Every time you talk, chew, or bite, you're causing stress on your teeth. The enamel of your tooth is responsible for protecting your teeth and preventing normal wear-and-tear for as long as possible. Yet, over time, you may notice that your enamel is starting to disappear. Some of this natural. Yet there are a few causes that may make your enamel disappear faster than it should be. Here's what you need to know about enamel loss.