Ice comes in various textures. If you’re chewing and biting down onto more condensed ice cubes, it’s practically the same thing as grinding on a jawbreaker candy or rocks — your teeth will eventually give out. Although enamel is the hardest thing in your entire body, it can’t withstand biting into something that hard over and over. If you’ve been lucky until now, that’s great. But it’s usually a matter of time before a weak area (like a crack or filling) suddenly breaks.However, softer types of ice — like the small round pellets you find in fountain drink machines — are usually easier and safer to chew. If you feel like you must suck on or chew ice, this is the type of texture that you want to be sure you’re sticking to.