21 Fascinating Dental Trivia Questions and Answers

Reviewed by Stefanie Zaldarriaga, Author·Updated Oct 2025·3 min read

Sink your teeth into Dental Trivia! From the history of dentistry and quirky tooth facts to famous dentists, dental health tips, and myths about teeth, these questions will test your knowledge of smiles. Perfect for students, healthcare professionals, or anyone curious about dental care, this trivia is both fun and educational.

1What is the hardest substance in the human body?
2How many teeth does an average adult human have?
3Who is known as the "Father of Modern Dentistry"?
4What ancient civilization is credited with the earliest known use of toothpaste?
5What is the recommended amount of time you should brush your teeth?
6Which vitamin is essential for gum health and helps prevent gingivitis?
7What was the first mass-produced toothbrush made from?
8What dental procedure did ancient Mayans practice as a form of body modification?
9What mineral is most important for strengthening teeth and preventing cavities?
10What part of the tooth is alive and contains nerves and blood vessels?
11What is the most common chronic Dental disease in children?
12What is the term for inflammation of the gums?
13What is a common cause of bad breath, medically known as halitosis?
14How often should you replace your toothbrush?
15What is the most effective method to prevent tooth decay?
16Which civilization is credited with using the first dental prosthetics?
17When did the practice of using amalgam for dental fillings begin?
18What ancient text contains the earliest written reference to tooth decay?
19What is the most common reason for a person to visit the dentist?
20Which animal has the most teeth?
21What is the term for the condition where teeth are naturally missing from birth?