Hardness Tests and material Used
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Hardness Tests and material Used

Physical Properties

Dental Material

[PHILLIPS' 11th ed 98/ 12th ed 65]

Hardness testMaterial used to measure
Knoop hardness testDiamond or rhombic shape (The long axis of indentation is measured)
Vickers (Diamond pyramid test)Diamond of square base shape (The diagonal length of indentation is measured)
RockwellDiamond of conical shape (The penetration depth is measured)
BrinellsSteel ball (The diameter of indentation is measured)

The Knoop hardness test is used to obtain the values for both exceedingly hard and soft materials. The hardness value is independent of ductility of the material.

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