The teeth are the hardest substances in the human body. A normal adult mouth has 32 teeth, which (except for wisdom teeth) have erupted by about age 13: Teeth X-ray films: X-ray pictures of the teeth may detect cavities.
Depending on if all of your adult teeth came in, or if you've ever had teeth removed or We explain how many teeth adults have and how to take care of them. Every tooth has three layers: the enamel, dentin, and pulp.
Most people have a complete set of adult teeth by the time they reach their teenage years. It is common for adults to have their wisdom teeth removed because.