Teeth are the hardest substance in the human body.
90% of life-threatening diseases have some oral symptoms.
Tooth decay is the 2nd most common disease in the U.S. after the common cold.
The earliest toothbrush was developed in China around 1600 BC. It was a simple chewing stick.
Egyptians used a form of toothpaste made from a mixture of salt, mint, and pepper over 5,000 years ago.
Certain cheeses and da...