How Do Desensitizing Toothpastes Work? [Science Video]

Do you suffer from toothaches when eating popsicles (maybe you should just stop biting into them?) or when you switch from eating something super cold to something too hot too quickly? To help protect your teeth against the pain, you can purchase desensitizing toothpastes at the Pharmacy, but do you know how these work? If you don’t, no worry, the folks from SciShow have you covered!