Humans have been dealing with cavities for thousands of years. Before modern dentistry, many ancient civilizations believed that cavities were caused by tiny worms inside the teeth. This idea was widespread and persisted for a long time. However, modern dental science has shown that tooth worms are just a myth. Cavities are actually caused by dental plaque, which is a sticky film made up of saliva, bacteria, acids, and food particles. When plaque builds up, it erodes the outer layer of the teeth, leading to decay and cavities. The myth of tooth worms dates back to 5000 B.C., with references found in ancient Sumerian texts. Ancient Chinese scripts from 1500 B.C. also mention tooth worms. People in the Roman Empire and the Middle Ages believed in them too. The belief likely arose from observations of real worms in contaminated water or from the tiny, hollow structures in human teeth that resemble worms. In Medieval England, one treatment for tooth worms involved inhaling the fumes of burned henbane seeds, which ironically looked like worms and had pain-relieving properties. Today, we know that good dental hygiene is key to preventing cavities. This includes brushing your teeth twice a day, flossing daily, and visiting the dentist regularly for cleanings. If you think you have a cavity, it's important to see a dentist for proper treatment.