Teeth are a unique organ that allows us to enjoy food—but is that all?
**Fact 1** – 99% of the calcium in our bodies is stored in our teeth. Tooth enamel consists largely of calcium phosphate, known as hydroxyapatite, making it the hardest tissue in the body—even tougher than bone. This durability shields teeth from oral acids. Under the right conditions, hydroxyapatite can even repair itself after acid exposure.
*Maintaining calcium levels throughout life is key to dental health. Focus on calcium-rich foods like milk, yogurt, and cheese—the best sources—but also salmon, oysters, dried beans, and asparagus.*

**Fact 2** – Tooth enamel lasts about 50-60 years. This protective outer layer is the hardest substance in the human body, composed of up to 97% inorganic material. Damaged enamel leads to decay in the tooth’s inner layers, making proper enamel care essential for oral hygiene.
**Fact 3** – Dental plaque hosts up to 300 types of bacteria, though only a few can harm teeth or gums. Regular dental visits help control bacterial buildup and address issues early. See a dentist at the first signs of gum disease, like bleeding during brushing.

**Fact 4** – Wisdom teeth appear in 92% of adults, but 25% never erupt. These teeth can emerge at any age—the oldest recorded case was a 94-year-old.
**Fact 5** – A knocked-out tooth can sometimes be reinserted into the gum. Time is critical: replant within 5 minutes and see a specialist within 30 minutes for the best chance of saving it.