. 2020 May 31;13(11):2510. doi: 10.3390/ma13112510

Table 1.

Mechanical properties of human tooth enamel and dentine.

Substance	Property	Value	Reference
Enamel	Hardness	2.0–3.5 GPa	[42]
	Young’s Modulus	80–120 GPa	[43,44,45]
	Fracture Toughness	0.67–3.93 MPa m^½	[46]
Dentine	Hardness	0.3–0.7 GPa	[47]
	Young’s Modulus	10–40 GPa	[43,48,49]
	Fracture Toughness	1.1–2.3 MPa m^½	[50,51]