How many teeth do adults have?
Adults usually have 32 teeth, including four wisdom teeth. Many people have fewer, because wisdom teeth may be missing or removed, leaving 28.
Adult teeth come in four types. There are 8 incisors at the front for cutting, 4 pointed canines for tearing, 8 premolars for crushing and 12 molars at the back for grinding. The third molars are the wisdom teeth.
Wisdom teeth usually come in between ages 17 and 25. Many jaws do not have enough room for them, so they can become impacted, or stuck, and may need to be removed. Some people never develop wisdom teeth at all.
Protecting your teeth
Tooth enamel is the hardest substance in the human body, but it cannot grow back once it is damaged. Brushing twice a day with fluoride toothpaste, cleaning between teeth and limiting sugary foods and drinks help prevent cavities and gum disease.
Teeth are made of several layers: hard enamel on the outside, softer dentin underneath and the pulp in the center, which contains nerves and blood vessels. The roots are held in the jawbone by a tough tissue called the periodontal ligament.
Did You Know?
Each person's teeth are unique, which is why dental records can be used to identify people.
This answer is general information, not medical advice. For a personal health question, talk to a doctor.