What causes cavities?

Acids from bacteria feeding on sugars

How do shark teeth differ from human teeth?

Sharks replace teeth throughout life

Human Teeth Quiz – How Much Do You Really Know?

This human teeth quiz covers enamel, dentin and pulp, baby and adult teeth, incisors, canines and molars, cavities, fluoride and wisdom teeth. Ten questions test how much you really know about the teeth you use every day.

Start Human Teeth Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Adult
How many teeth does a typical adult have, including wisdom teeth?
Hardest
What is the hardest substance in the human body?
Types
Which teeth are best for tearing food?
Grinding
Which teeth grind food?
Baby
At about what age do children start losing baby teeth?
Wisdom
When do wisdom teeth usually appear?
Cavity
What causes cavities?
Fluoride
How does fluoride help teeth?
Inside
What is the soft center of a tooth with nerves called?
Sharks
How do shark teeth differ from human teeth?

Explanations: answer key for all 10 questions

Q1: How many teeth does a typical adult have, including wisdom teeth?
Answer: 32
Children have 20 baby teeth.
Q2: What is the hardest substance in the human body?
Answer: Tooth enamel
It is mostly mineral.
Q3: Which teeth are best for tearing food?
Answer: Canines
They are pointed.
Q4: Which teeth grind food?
Answer: Molars
They have broad, flat surfaces.
Q5: At about what age do children start losing baby teeth?
Answer: About 6
Adult teeth push them out.
Q6: When do wisdom teeth usually appear?
Answer: Between ages 17 and 25
Some people never get them.
Q7: What causes cavities?
Answer: Acids from bacteria feeding on sugars
Acids dissolve enamel.
Q8: How does fluoride help teeth?
Answer: Strengthens enamel
It is in toothpaste and some water.
Q9: What is the soft center of a tooth with nerves called?
Answer: Pulp
Root canals treat infected pulp.
Q10: How do shark teeth differ from human teeth?
Answer: Sharks replace teeth throughout life
Humans get only two sets.

Human Teeth Quiz – A Mouth Full of Tools

Teeth cut, tear and grind food so the body can digest it. Humans have two sets: 20 baby teeth and up to 32 adult teeth, including incisors for biting, canines for tearing and premolars and molars for grinding.

Each tooth has a hard enamel coating, a layer of dentin underneath and a soft pulp in the center with nerves and blood vessels. Enamel is the hardest substance in the body but cannot regrow once damaged.

Bacteria in plaque turn sugars into acids that cause cavities. Brushing twice a day with fluoride toothpaste, flossing, limiting sugary snacks and visiting a dentist help keep teeth healthy for life.

What This Quiz Teaches

This quiz is for students learning about teeth.

How many teeth we have
What enamel is
What different teeth do
What causes cavities
How fluoride helps

Did You Know?

Teeth are unique like fingerprints.
Dentists use X-rays to see roots.
Saliva helps protect teeth.
Narwhal tusks are teeth.
Some people have extra teeth.