What is the hard outer layer of a tooth's crown called?
AnswerEnamel
Enamel covers and protects the crown.
Health · Facts & stats
Dentist facts & stats
7 fact-checked facts about teeth, dental science and dentistry, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
How many baby (primary) teeth do children typically have?
Answer20
Children usually have 20 primary teeth.
Going deeper
Which mineral is commonly added to toothpaste to help prevent cavities?
AnswerFluoride
Fluoride helps strengthen enamel.
Which teeth are commonly called 'wisdom teeth'?
AnswerThird molars
Wisdom teeth are the third molars, usually the last to come in.
Hardened plaque on teeth is called what?
AnswerTartar
Tartar, also called calculus, is plaque that has hardened.
Expert level
What is the layer just beneath the enamel called?
AnswerDentin
Dentin makes up most of the tooth beneath the enamel.
What does a periodontist specialize in?
AnswerGums and tissues that support teeth
Periodontists focus on gums and the bone around teeth.
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