New Perspectives on Tooth Wear

Table 1

Mechanical properties of some materials that might damage enamel.

Particle type	Hardness (GPa)	Elastic modulus (GPa)	Reference
Quartz grit	7–7.75	Not known	[54]
Plant phytoliths	5.8–6; 0.5–2.1 GPa	Not known	[54]; [55]
Seed shells	0.1–0.4	2–7	[56]
Dental enamel	2–6	50–100	[57]