How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
- Home
- Can teeth heal themselves?
“Teeth can't repair enamel damage on their own.”
Reference: American Dental Association
More from this shelf
What is the hardest substance in the body?
Tooth enamel is the hardest substance in the human body.
Did ancient Egyptians have toothpaste?
Ancient Egyptians made toothpaste from ingredients like crushed eggshells, ash, and salt.