Unlike other products that fit like a mouthpiece, FX Fangs cover only the front of your teeth. The design keeps your speech natural. FX Fangs are made from a bio-compatible plastic and they're designed and created for hyper-realistim. Because of the hand-made nature of the products, no two sets are the same. The teeth look REAL!. Each set is stained by hand. No two sets are the same, just like real teeth!