What Are Our Teeth Made Of?

What Are Our Teeth Made Of?

Author: Vera KoesterORCID iD

In a healthy tooth, the visible part is the enamel, akin to a glaze, covering the underlying dentin. The dentin surrounds the pulp, while the dental cementum and periodontium encase the root up to the tooth’s neck.

A tooth in cross-section

Figure 1. A tooth in cross-section.


What is the main component of our teeth?

A) calcium phosphate hydroxylapatite, Ca5(PO4)3(OH)

B) calcium fluorophosphate, Ca5(PO4)3F

C) chlorapatite, Ca5(PO4)3Cl

D) carbonate fluorapatite, Ca5(PO4,CO3OH)3F

E) montmorillonite, (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2·nH2O



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